| Patents for H01T 15 - Circuits specially adapted for spark gaps, e.g. ignition circuits (278) |
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| 11/13/1996 | EP0741838A1 Device for operating a high-tension switch by means of light energy |
| 10/30/1996 | EP0680667A4 Corona discharge apparatus. |
| 07/30/1996 | CA2092873C Fault current detection and indicating device for arresters or isolators |
| 06/19/1996 | EP0717190A2 Device and method for evaluating the heat resistivity of spark plug |
| 06/06/1996 | WO1996017169A1 Device for operating a high-tension switch by means of light energy |
| 05/28/1996 | US5521509 Device of estimating heat resistivity for a spark plug and a method of estimating the same |
| 03/06/1996 | CN1117884A Electrochemical salute |
| 12/14/1995 | DE4442545C1 Optical switching system for HV switchgear |
| 11/08/1995 | EP0680667A1 Corona discharge apparatus |
| 10/26/1995 | DE4413993A1 Circuitry for producing pulsed current in arcs and plasmas |
| 10/19/1995 | WO1995028024A1 A device for indicating a destroyed arrester |
| 10/18/1995 | CN1110188A Cracker with spark discharger |
| 04/04/1995 | US5402766 Ignition apparatus with a pre-gap |
| 12/13/1994 | US5373242 Device for detecting and for indicating fault current through a lightning arrestor or an insulator |
| 11/16/1994 | CN2183037Y Non contact generating the arc trigger |
| 07/07/1994 | WO1994015391A1 Corona discharge apparatus |
| 06/01/1994 | EP0427801B1 Semiconductor switch, especially a high-tension ignition switch for an internal combustion engine |
| 05/31/1994 | US5317155 Corona discharge apparatus |
| 01/18/1994 | US5280404 Arc detection system |
| 11/18/1993 | EP0570206A2 Arc detection system |
| 10/26/1993 | US5255660 Semiconductor switch, in particular as a high-voltage ignition switch for internal combustion engines |
| 10/06/1993 | EP0564334A1 Device for detecting and indicating a fault current in an arrester or insulator |
| 09/30/1993 | WO1993019574A1 Plasma reactor |
| 09/21/1993 | US5245988 Preparing a circuit for the production of shockwaves |
| 08/03/1993 | US5233498 Arrangement for forced triggering a spark gap |
| 05/04/1993 | US5207209 Motor vehicle |
| 04/08/1993 | DE4232208A1 Voltage peak counter for current supply or communications channel - has absorbers with different response voltages with discharge tubes and nonlinear resistances and signal counters at light receivers |
| 03/28/1993 | CA2079116A1 Surge counter |
| 03/28/1993 | CA2079115A1 Surge counter |
| 08/20/1992 | DE4204731A1 Ignition system with pre-discharge gap for IC engine - has high-voltage gap shorted out by relay contact unless indication of poor combustion is received |
| 08/18/1992 | CA1306514C Process and device for igniting an arc with a conducting plasma channel |
| 01/21/1992 | US5083114 Ground fault indicating device |
| 05/22/1991 | EP0427956A1 Improvement of the ignition characteristics of underwater spark gaps |
| 05/22/1991 | EP0427801A1 Semiconductor switch, especially a high-tension ignition switch for an internal combustion engine. |
| 04/18/1991 | WO1991005389A1 Arrangement for improving starting behaviour |
| 12/13/1990 | WO1990015242A1 Semiconductor switch, especially a high-tension ignition switch for an internal combustion engine |
| 10/03/1990 | CN2063302U Electrothermal ignitor for spark plug |
| 05/17/1990 | WO1990005399A1 An arrangement for forced triggering a spark gap |
| 05/04/1990 | CA2000644A1 Arrangement for forced triggering a spark gap |
| 03/06/1990 | US4906811 Process and device for igniting an arc with a conducting plasma channel |
| 03/06/1990 | CA1266511A1 Apparatus for detecting degradation of an arrester |
| 07/04/1989 | US4845378 Emp generator |
| 01/03/1989 | US4796283 Surge counter for an overvoltage arrester |
| 12/20/1988 | US4792730 Circuit for interrupting arc discharge in a gas-discharge vessel |
| 12/13/1988 | US4791375 Apparatus for detecting degradation of an arrester |
| 10/26/1988 | EP0287771A1 EMP generator |
| 05/25/1988 | EP0268528A1 Ignition device for an internal-combustion engine |
| 01/20/1988 | EP0253435A1 Process and device for igniting an arc in an environment with reduced pressure |
| 10/14/1987 | EP0240783A1 Event counter for an overvoltage arrester |
| 07/08/1987 | EP0228153A1 Apparatus for detecting degradation of an arrester |
| 06/23/1987 | US4675773 Transmission line protection system |
| 05/05/1987 | US4663568 Multichannel or spark gap switch triggered by saturable inductor induced voltage pulse |
| 02/11/1987 | CN86102805A Electric appliance cracker |
| 08/27/1986 | CN85109150A Transmission lines protective systems |
| 07/09/1986 | EP0186865A2 Device for interrupting arc discharges in a gas discharge vessel |
| 09/06/1983 | CA1153421A1 Relaxation oscillator type spark generator |
| 03/08/1983 | CA1142580A1 Protective circuit for zinc oxide varistors |
| 05/11/1982 | US4329628 Relaxation oscillator type spark generator |
| 02/10/1982 | EP0045572A2 A relaxation oscillator type spark generator |
| 10/20/1981 | US4296358 High-voltage spark source |
| 08/18/1981 | US4285025 Corona charger |
| 03/31/1981 | US4259704 Protective circuit for zinc oxide varistors |
| 01/27/1981 | US4247880 Ignition device for oil burners |
| 12/02/1980 | US4237404 Spark gap control |
| 11/18/1980 | CA1089926A1 Spark source with regulation of spark magnitude by control of spark timing |
| 07/15/1980 | US4212280 Ignition system for internal combustion engines |
| 05/13/1980 | US4203052 Solid state ignition system |
| 01/01/1980 | CA1069168A Electric arc ignition device |
| 12/25/1979 | CA1068775A Electrical overvoltage surge arrester with a long time constant valve section and series gap section |
| 08/07/1979 | CA1060086A1 Gas ignition device |
| 01/09/1979 | CA1046134A1 Burner ignition system |
| 09/05/1978 | US4112418 Lightning current responsive alarm |
| 09/05/1978 | US4111556 Control system for alloy tester |
| 07/26/1977 | US4037963 Spark-discharge apparatus with ground detection safety circuit |
| 06/29/1976 | US3967160 Electrical overvoltage surge arrester with a long time constant valve section and series gap section |
| 04/06/1976 | US3949273 Burner ignition system |
| 03/16/1976 | US3944887 Crowbar switch |
| 03/16/1976 | US3944886 Protection apparatus for a capacitor connected in series with an electric power circuit |