Patents


  The following list mentions the patents of which at least one senior engineer of Excem is inventor or co-inventor.

[P66] French patent application 16/70357 of 30 June 2016 and international application PCT/IB2017/053267 of 2 June 2017. Method of automatic adjustment of a tunable matching circuit, and automatic tuning system using this method (original title in French: Procédé de réglage automatique d'un circuit d'adaptation accordable, et système d'accord automatique utilisant ce procédé).
Inventors: Frédéric Broydé & Evelyne Clavelier.
In progress.

[P65] French patent application 16/70337 of 22 June 2016 and international application PCT/IB2017/053244 of 1 June 2017. Method for automatic adjustment of a tunable matching circuit, and automatic tuning system using this method (original title in French: Procédé pour réglage automatique d'un circuit d'adaptation accordable, et système d'accord automatique utilisant ce procédé).
Inventors: Frédéric Broydé & Evelyne Clavelier.
In progress.

[P64] French patent application 16/00273 of 16 February 2016 and international application PCT/IB2016/056839 of 14 November 2016. Method for automatically adjusting a tunable matching circuit, and automatic tuning system using this method (original title in French: Procédé pour régler automatiquement un circuit d'adaptation accordable, et système d'accord automatique utilisant ce procédé).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent in progress, US patent US 9,628,135 granted.

[P63] French patent application 15/02633 of 17 December 2015 and international application PCT/IB2016/051400 of 11 March 2016. Method for automatically adjusting tunable passive antennas, and automatically tunable antenna array using this method (original title in French: Procédé pour régler automatiquement des antennes passives accordables, et réseau d'antennes automatiquement accordable utilisant ce procédé).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent in progress, US patent 9,698,484 granted.

[P62] French patent application 15/01780 of 26 August 2015 and international application PCT/IB2015/057161 of 17 September 2015.
Method for automatically adjusting a tuning unit, and automatic tuning system using this method (original title in French: Procédé pour régler automatiquement une unité d'accord, et système d'accord automatique utilisant ce procédé).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent in progress, US patent application US 15/299,800 in progress.

[P61] French patent application 15/01290 of 22 June 2015 and international application PCT/IB2015/057131 of 16 September 2015.
Method and apparatus for automatic tuning of an impedance matrix, and radio transmitter using this apparatus (original title in French: Procédé et appareil pour accord automatique d'une matrice impédance et émetteur radio utilisant cet appareil).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent in progress, US patent application US 15/296,724 in progress.

[P60] French patent application 14/01221 of 28 May 2014 and international application PCT/IB2015/052974 of 23 April 2015.
Radio communication using a plurality of selected antennas (original title in French: Communication radio utilisant une pluralité d'antennes sélectionnées).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent in progress, US patent application US 14/925,340 in progress.

[P59] French patent application 14/00666 of 20 March 2014 and international application PCT/IB2015/051644 of 6 March 2015 (WO 2015/140660).
Radio communication using tunable antennas and an antenna tuning apparatus (original title in French: Communication radio utilisant des antennes accordables et un appareil d'accord d'antenne).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent in progress, US patent 9,680,510 granted.

[P58] French patent application 14/00606 of 13 March 2014 and international application PCT/IB2015/051548 of 3 March 2015 (WO 2015/136409).
Radio communication using multiple antennas and localization variables (original title in French: Communication radio utilisant des antennes multiples et des variables de localisation).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent in progress, US patent 9,654,162 granted.

[P57] French patent application 13/00878 of 15 April 2013 and international application PCT/IB2014/058933 of 12 February 2014 (WO 2014/170766).
Method and apparatus for automatically tuning an impedance matrix, and radio transmitter using this apparatus (original title in French: Procédé et appareil pour accorder automatiquement une matrice impédance, et émetteur radio utilisant cet appareil).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 9,077,317 granted.

[P56] French patent application 13/00665 of 21 March 2013 and international application PCT/IB2013/060481 of 28 November 2013 (WO 2014/147458).
Method and device for radio reception using a plurality of antennas and a multiple-input-port and multiple-output-port amplifier (original title in French: Procédé et dispositif pour la réception radio utilisant une pluralité d'antennes et un amplificateur à accès d'entrées multiples et accès de sortie multiples).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 9,294,174 granted.

[P55] French patent application 12/02564 of 27 September 2012 and international application PCT/IB2013/058574 of 16 September 2013 (WO 2014/049486).
Method and device for radio reception using an antenna tuning apparatus and a plurality of antennas (original title in French: Procédé et dispositif pour la réception radio utilisant un appareil d'accord d'antenne et une pluralité d'antennes).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 9,337,534 granted.

[P54] French patent application 12/02542 of 25 September 2012, international application PCT/IB2013/058423 of 10 September 2013 (WO 2014/049475), divisional application 15/00713 of 7 April 2015 and divisional application 15/00714 of 7 April 2015.
Antenna tuning apparatus for a multiport antenna array (original title in French: Appareil d'accord d'antenne pour un réseau d'antennes à accès multiples).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent US 9,621,132 granted.

[P53] French patent application 12/01692 of 13 June 2012.
Heating device for a human body (original title in French: Dispositif de chauffage pour un corps humain).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted.

[P52] French patent application 11/01902 of 21 June 2011 and international application PCT/IB2012/052709 of 30 May 2012 (WO 2012/176081).
Transmitter for near-field chip-to-chip multichannel transmission (original title in French: Emetteur pour transmission multivoie puce-à-puce en champ proche).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 9,525,465 granted.
Download the PCT application.

[P51] French patent application 11/01720 of 7 June 2011 and international application PCT/IB2012/052705 of 30 May 2012 (WO 2012/168833).
Method for evaluating the effects of an interconnection on electrical variables (original title in French: Procédé pour évaluer les effets d'une interconnexion sur des variables électriques).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted.
Download the PCT application.

[P50] French patent application 10/02802 of 2 July 2010 and international application PCT/IB2011/052253 of 24 May 2011 (WO 2012/001545).
Receiver for near-field chip-to-chip multichannel transmission (original title in French: Récepteur pour la transmission multivoie puce-à-puce en champ proche).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, European patent application EP2589159 granted, US patent 8,902,998 granted.
Download the PCT application.

[P49] French patent application 10/02662 of 25 June 2010 and international application PCT/IB2011/052213 of 20 May 2011 (WO 2011/161563).
Balanced-input current-sensing differential amplifier (original title in French: Amplificateur différentiel captant le courant à entrée équilibrée).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 8,692,617 granted.
Download the PCT application.

[P48] French patent application 09/04611 of 28 September 2009 and international application PCT/IB2010/051863 of 28 April 2010 (WO 2011/036573).
Method for pseudo-differential transmission using a non-uniform interconnection (original title in French: Procédé de transmission pseudo-différentiel utilisant une interconnexion non uniforme).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 8,193,875 granted.
Download the PCT application.

[P47] French patent application 09/04610 of 28 September 2009 and international application PCT/IB2010/051857 of 28 April 2010 (WO 2011/036572).
Method for transmission using a non-uniform interconnection (original title in French: Procédé de transmission utilisant une interconnexion non uniforme).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 8,174,334 granted.
Download the PCT application.

[P46] French patent application 09/00161 of 15 January 2009 and international application PCT/IB2009/055295 of 23 November 2009 (WO 2010/082093).
Transmission device using a plurality of elementary return conductors (original title in French: Dispositif de transmission utilisant une pluralité de conducteurs de retour élémentaires).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 8,338,992 granted.
Download the PCT application.

[P45] French patent application 09/00042 of 8 January 2009 and international application PCT/IB2009/055287 of 23 November 2009 (WO 2010/079390).
Multichannel interfacing device having a switching circuit (original title in French: Dispositif d'interface multicanal avec circuit de commutation).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 8,599,872 granted.
Download the PCT application.

[P44] French patent application 08/04430 of 4 August 2008 and international application PCT/IB2009/052645 of 19 June 2009 (WO 2010/015948).
Method for pseudo-differential transmission using natural electrical variables (original title in French: Procédé de transmission pseudo-différentiel utilisant des variables électriques naturelles).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 8,461,937 granted.
Download the PCT application.

[P43] French patent application 08/04429 of 4 August 2008 and international application PCT/IB2009/052638 of 19 June 2009 (WO 2010/015947).
Method for pseudo-differential transmission using modal electrical variables (original title in French: Procédé de transmission pseudo-différentiel utilisant des variables électriques modales).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 8,049,576 granted.
Download the PCT application.

[P42] French patent application 08/03985 of 11 July 2008 and international application PCT/IB2009/051557 of 14 April 2009 (WO 2010/004448).
Multichannel interfacing device having a balancing circuit (original title in French: Dispositif d'interface multicanal avec circuit d'équilibrage).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 8,125,240 granted.
Download the PCT application.

[P41] French patent application 08/03982 of 11 July 2008 and international application PCT/IB2009/051358 of 31 March 2009 (WO 2010/004445).
Multiple-input and multiple-output amplifier having pseudo-differential inputs (original title in French: Amplificateur à entrées multiples et sorties multiples ayant des entrées pseudo-différentielles).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 7,952,429 granted.
Download the PCT application.

[P40] French patent application 08/03876 of 8 July 2008 and international application PCT/IB2009/051182 of 20 March 2009 (WO 2010/004444).
Multichannel interfacing device having a termination circuit (original title in French: Dispositif d'interface multicanal avec circuit de terminaison).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 8,222,919 granted.
Download the PCT application.

[P39] French patent application 08/03830 of 7 July 2008 and international application PCT/IB2009/051053 of 13 March 2009 (WO 2010/004442).
Pseudo-differential receiving circuit (original title in French: Circuit de réception pseudo-différentiel).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 8,896,361 granted.
Download the PCT application.

[P38] French patent application 07/05260 of 20 July 2007 and international application PCT/IB2008/052102 of 29 May 2008 (WO 2009/013644).
Method and device for pseudo-differential transmission (original title in French: Procédé et dispositif pour les transmissions pseudo-différentielles).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent US 8,248,177 granted.
Download the PCT application.

[P37] French patent application 07/04949 of 09 July 2007 and international application PCT/IB2008/051982 of 20 May 2008 (WO 2009/007866).
Pseudo-differential interfacing device having a switching circuit (original title in French: Dispositif d'interface pseudo-différentiel avec circuit de commutation).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 7,884,648 granted.
Download the PCT application.

[P36] French patent application 07/04889 of 06 July 2007 and international application PCT/IB2008/051942 of 16 May 2008 (WO 2009/007864).
Pseudo-differential interfacing device having a balancing circuit (original title in French: Dispositif d'interface pseudo-différentiel avec circuit d'équilibrage).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 7,952,380 granted.
Download the PCT application.

[P35] French patent application 07/04421 of 21 June 2007 and international application PCT/IB2008/051826 of 8 May 2008 (WO 2008/155676).
Pseudo-differential interfacing device having a termination circuit (original title in French: Dispositif d'interface pseudo-différentiel avec circuit de terminaison).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 7,932,741 granted.
Download the PCT application.

[P34] French patent application 06/06502 of 18 July 2006 and international application PCT/IB2007/001589 of 5 June 2007 (WO 2008/010035).
Method and device for radio reception using a plurarity of antennas (original title in French: Procédé et dispositif pour la réception radioélectrique utilisant une pluralité d'antennes).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 7,983,645 granted.
Download the PCT application.

[P33] French patent application 06/05633 of 23 June 2006 and international application PCT/IB2007/001344 of 26 April 2007 (WO 2008/001168).
Multiple-input and multiple-output amplifier using mutual induction in the feedback network (original title in French: Amplificateur à entrées multiples et sorties multiples utilisant l'induction mutuelle dans le réseau de rétroaction).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 7,940,119 granted.
Download the PCT application.

[P32] French patent application 06/04428 of 18 May 2006 and international application PCT/US2007/011973 of 18 May 2007 (WO 2008/008125).
Method and device for secret radio communications (original title in French: Procédé et dispositif pour les communications radio secrètes).
Inventors: Frédéric Broydé & Evelyne Clavelier.
Application abandonned by the buyer.

[P31] French patent application 06/01952 of 6 March 2006 and international application PCT/FR2007/000403 of 6 March 2007 (WO 2007/101942).
Electroluminescent transmitting device for free-space optical transmission (original title in French: Dispositif d'émission électroluminescent pour la transmission optique en espace libre).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted. European patent application EP2002571 granted. Korean patent 1020087024432 granted.

[P30] French patent application 06/00388 of 17 January 2006 and international application PCT/IB2006/003950 of 19 December 2006 (WO 2007/083191).
Multiple-input and multiple-output amplifier (original title in French: Amplificateur à entrées multiples et sorties multiples).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 7,642,849 granted.
Download the US patent or the French patent.

[P29] French patent application 04 09939 of 20 September 2004 and international application PCT/IB2005/003309 of 16 September 2005 (WO 2006/033018).
Transmitting device for free-space optical transmission (original title in French: Dispositif d'émission pour la transmission optique en espace libre).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted. European patent application EP1797653 granted. Korean patent 1020077008788 granted.
Download the PCT application.

[P28] French patent application 03 03087 of 13 March 2003 and international application PCT/EP2004/002383 of 18 February 2004 (WO 2004/082168).
Method and device for transmission without crosstalk (original title in French: Procédé et dispositif pour la transmission sans diaphonie).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 7,408,426 granted.
Download the PCT application.

[P27] French patent application 03 02814 of 6 March 2003 and international application PCT/EP2004/002382 of 18 February 2004 (WO 2004/079941).
Digital method and device for transmission with reduced crosstalk (original title in French: Procédé et dispositif numériques pour la transmission avec une faible diaphonie).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, European patent EP1634386 granted, US patents 7,477,069 and 7,764,083 granted.
Download the PCT application.

[P26] French patent application 03 00064 of 6 January 2003 and international application PCT/EP2003/015036 of 24 December 2003 (WO 2004/062129).
Method and device for transmission with reduced crosstalk (original title in French: Procédé et dispositif pour la transmission avec une faible diaphonie).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patents 7,167,019 and 7,362,130 granted.
Download the PCT application.

[P25] French patent application 02 13629 of 26 November 2002.
Device for the characterization of multipair cables (original title in French: Dispositif pour la caractérisation des câbles à paires).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted.
Download the French patent application.

[P24] French patent application 02 07888 of 25 June 2002.
Method and device for receiving differential signals with a high common-mode rejection (original title in French: Procédé et dispositif pour la réception de signaux différentiels avec une forte réjection du mode commun).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted.
Download the French patent application.

[P23] French patent application 01 11063 of 22 August 2001.
Method an device for high-efficiency generation a modulated signal (original title in French: Procédé et dispositif pour la génération d'un signal modulé avec un rendement élevé).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted.
Download the French patent application.

[P22] French patent application 97 07831 of 24 June 1997.
Method and device for detecting and localising faults in a piece of composite material (original title in French: Procédé et dispositif pour la détection et la localisation de défauts dans une pièce de matériau composite).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted.

[P21] French patent application 97 03299 of 18 March 1997.
Method and device for the detection of series faults in a low-voltage electrical installation (original title in French: Procédé et dispositif pour la détection de défauts série dans une installation électrique à basse tension).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted.

[P20] French patent application 96 06336 of 22 May 1996.
Method and device for the detection of series faults in an electric control panel (original title in French: Procédé et dispositif pour la détection de défauts série dans un tableau électrique).
Inventors: Frédéric Broydé & Evelyne Clavelier.
Certificate of utility granted.

[P19] French patent application 96 03455 of 20 March 1996.
Method and device for the detection of series faults in an electrical installation (original title in French: Procédé et dispositif pour la détection de défauts série dans une installation électrique).
Inventors: Frédéric Broydé & Evelyne Clavelier.
Certificate of utility granted.

[P18] French patent application 95 09136 of 27 July 1995.
Method and device for the protection of a radio service against mobile sources of disturbances (original title in French: Procédé et dispositif pour la protection d'un service radioélectrique vis-à-vis de sources mobiles de perturbations).
Inventors: Frédéric Broydé & Evelyne Clavelier.
Certificate of utility granted.

[P17] French patent application 94 14689 of 5 December 1994 and international application PCT/FR95/01445 of 3 November 1995 (WO 9618111).
Device for locating defects in underwater telecommunication links (original title in French: Dispositif pour la localisation de défauts sur liaisons sous-marines de télécommunications).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted, US patent 5,883,517 granted.

[P16] French patent application 94 03813 of 31 March 1994.
Electromagnetic method and device for anti-aircraft defence by generation of a ringing attack (original title in French: Procédé et dispositif électromagnétique pour la défense antiaérienne par génération d'une agression résonante).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted.

[P15] French patent application 94 01804 of 15 February 1994.
Protection device against large amplitude impulsive conducted electromagnetic disturbances, using the extinguishing of a spark-gap by a shunt device implementing semiconductors (original title in French: Dispositif pour la protection contre les perturbations électromagnétiques conduites impulsionnelles de grande amplitude, avec extinction d'un éclateur par un dispositif de dérivation à semiconducteur).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted.

[P14] French patent application 94 01803 of 15 February 1994.
Protection device against large amplitude impulsive conducted electromagnetic disturbances, using the extinguishing of a spark-gap by an electromechanical switching device (original title in French: Dispositif pour la protection contre les perturbations électromagnétiques conduites impulsionnelles de grande amplitude, avec extinction d'un éclateur par un dispositif de coupure électromécanique).
Inventors: Frédéric Broydé & Evelyne Clavelier.
Certificate of utility granted.

[P13] French patent application 93 13492 of 9 November 1993.
Device for the characterization of imperfections of the screens of shielded cables by applying a variable magnetic field parallel to the cable axis (original title in French: Dispositif pour la caractérisation des imperfections des écrans de câble avec écran par application d'un champ magnétique variable parallèle à l'axe du câble).
Inventors: Frédéric Broydé & Evelyne Clavelier.
Certificate of utility granted.

[P12] French patent application 93 10903 of 14 September 1993.
Device for the characterization of imperfections of the screens of shielded cables by applying a variable magnetic field transverse to the cable axis (original title in French: Dispositif pour la caractérisation des imperfections des écrans de câble avec écran par application  d'un champ magnétique variable transverse à l'axe du câble).
Inventors: Frédéric Broydé & Evelyne Clavelier.
Certificate of utility granted.

[P11] French patent application 93 10902 of 14 September 1993.
Method and device for extending the useful passband of TEM cells (original title in French: Procédé et dispositif pour l'extension de la bande passante utile des cellules TEM).
Inventors: Frédéric Broydé & Evelyne Clavelier.
Certificate of utility granted.

[P10] French patent application 91 08436 du 5 July 1991.
Method and device for selection and optimal reception of a signal present on several channels using an identification signal (original title in French: Procédé et dispositif de sélection et de réception optimale d'un signal présent sur plusieurs canaux avec présence d'un signal d'identification).
Inventors: Frédéric Broydé & Evelyne Clavelier.
Certificate of utility granted.

[P9] French patent application 91 08211 of 2 July 1991.
Method and device for selection and optimal reception of a signal present on several channels using an estimate of coherence (original title in French: Procédé et dispositif de sélection et de réception optimale d'un signal présent sur plusieurs canaux avec estimation de la cohérence).
Inventors: Frédéric Broydé & Evelyne Clavelier.
Certificate of utility granted.

[P8] French patent application 91 08212 of 2 July 1991.
Method and device for monitoring an electromagnetic screen using digital signal processing and several auxiliary transmission channels (original title in French: Procédé et dispositif de contrôle d'un écran électromagnétique avec utilisation de plusieurs voies de transmission auxiliaires et d'un traitement numérique du signal).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted.

[P7] French patent application 90 08809 of 11 July 1990.
Method and device for monitoring an electromagnetic screen using several auxiliary transmission channels (original title in French: Procédé et dispositif de contrôle d'un écran électromagnétique avec utilisation de plusieurs voies de transmission auxiliaires).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted.

[P6] French patent application 89 13616 of 18 October 1989.
Method and device for monitoring a quasi-closed electromagnetic screen using current injection (original title in French: Procédé et dispositif de contrôle d'un écran électromagnétique quasi-fermé par injection de courant).
Inventors: Frédéric Broydé & Evelyne Clavelier.
Certificate of utility granted.

[P5] French patent application 89 11629 of 6 September 1989.
Method and device for the connection of a cable shield (original title in French: Procédé et dispositif pour la connexion d'un écran de câble).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted.

[P4] French patent application 89 08391 of 23 July 1989.
Radio frequency electromagnetic field absorption device (original title in French: Dispositif d'absorption de champ électromagnétique radiofréquence).
Inventors: Frédéric Broydé & Evelyne Clavelier.
French patent granted.

[P3] French patent application 88 10718 of 5 August 1988.
Method and device for monitoring a quasi-closed electromagnetic screen (original title in French: Procédé et dispositif de contrôle d'un écran électromagnétique quasi-fermé).
Inventors: Frédéric Broydé & Michel Barrault.
French patent granted, European patent EP0354135 granted, patent US 5,068,616 granted.

[P2] French patent application 88 08792 of 28 June 1988.
Protection device against the effects of nuclear electromagnetic pulses (original title in French: Dispositif de protection contre les effets des impulsions électromagnétiques nucléaires).
Inventor: Frédéric Broydé.
French patent granted, European patent EP0349445 granted.

[P1] French patent application 87 01178 of 28 January 1987.
Dissipatif low-pass filter (original title in French: Filtre dissipatif passe-bas).
Inventor: Frédéric Broydé.
French patent granted, European patent EP0279137 granted, US patent 4,794,353 granted, Japanese patent 63-197109 granted.
Download the US patent.


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