| Patents for H01T 21 - Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs (1,750) |
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| 02/25/2010 | US20100044929 Method of forming a spark plug insulator |
| 02/24/2010 | EP2156528A2 Small-diameter spark plug with resistive seal |
| 02/23/2010 | US7666047 Method for securing a metal noble tip to an electrode of a spark plug using a resistance and laser welding process |
| 02/10/2010 | CN101647163A Deflection inspecting device for spark plug insulator, deflection inspecting method for spark plug insulator, and manufacturing method for spark plug insulator |
| 02/03/2010 | EP1719223B1 Noble metal tip for spark plug electrode and method of making same |
| 01/13/2010 | EP2143182A2 Igniter |
| 01/07/2010 | US20100001626 Spark plug |
| 01/06/2010 | CN100578878C Spark plug and method for producing same |
| 12/31/2009 | US20090322198 Method of producing spark plug and spark plug produced by the method |
| 12/30/2009 | EP2139084A2 Method of producing spark plug and spark plug produced by the method |
| 12/29/2009 | US7637793 Spark plug and method for producing it |
| 12/23/2009 | WO2009154070A1 Spark plug for internal combustion engine and method of manufacturing the same |
| 12/16/2009 | EP2133969A1 Spark plug manufacturing method |
| 12/16/2009 | EP2133968A1 Spark plug manufacturing method |
| 12/16/2009 | EP2133966A2 Arc containment device and method |
| 12/16/2009 | CN201365067Y Center electrode of noble metal spark plug |
| 12/10/2009 | US20090302733 Spark plug for internal combustion engine and method of manufacturing the same |
| 12/09/2009 | EP2131462A2 Spark plug for internal combustion engine and method of manufacturing the same |
| 12/09/2009 | EP2131461A1 Spark plug, and its manufacturing method |
| 12/09/2009 | EP2131460A1 Spark plug manufacturing method, and spark plug |
| 12/03/2009 | US20090295277 Glass packages and methods of controlling laser beam characteristics for sealing them |
| 12/01/2009 | US7626320 Spark plug with excellent impact resistance conductive seal, and method for producing the same |
| 11/18/2009 | EP2118973A1 Spark plug and insulator composed of high-purity aluminium oxide ceramic |
| 11/10/2009 | US7615914 Spark plug of an internal combustion engine |
| 10/29/2009 | WO2009131134A1 Method of manufacturing spark plug |
| 10/21/2009 | EP2109923A1 Ignition device having an electrode with a platinum firing tip and method of construction |
| 10/08/2009 | WO2009122996A1 Spark plug, and method for manufacturing the same |
| 10/07/2009 | CN101553661A Spark plug with welded sleeve on electrode |
| 10/01/2009 | WO2009119544A1 Insulator for spark plug, process for producing the insulator, spark plug, and process for producing the spark plug |
| 10/01/2009 | WO2009119517A1 Method of manufacturing spark plug |
| 09/24/2009 | US20090239437 Insulator for spark plug, and method for manufacturing spark plug |
| 09/23/2009 | EP2103402A2 Method for manufacturing an insulator for spark plug and spark plug |
| 09/23/2009 | CN101540478A Insulator for spark plug, and method for manufacturing spark plug |
| 09/10/2009 | US20090227169 Method for manufacturing ignition plug |
| 09/10/2009 | US20090227168 Method for manufacturing ignition plug |
| 09/09/2009 | EP2099107A2 Method for manufacturing ignition plug |
| 09/09/2009 | EP2099106A2 Method for manufacturing ignition plug |
| 09/08/2009 | US7586246 Spark plug designed to ensure high strength of electrode joint and production method thereof |
| 09/02/2009 | EP2096726A2 Insulator for spark plug, and method for manufacturing spark plug |
| 09/02/2009 | CN101521356A Insulator for spark plug, and method for manufacturing spark plug |
| 09/01/2009 | US7581998 Method for regulating aground electrode position in spark plug |
| 08/27/2009 | US20090215348 Insulator for spark plug, and method for manufacturing spark plug |
| 08/27/2009 | DE10336226B4 Verfahren zur Untersuchung einer Zündvorrichtung für eine Brennkraftmaschine und Untersuchungsvorrichtung Method for examining an ignition device for an internal combustion engine and analyzing device |
| 08/26/2009 | EP1456922B1 Sealing device and sealing method |
| 08/26/2009 | CN100533885C Spark plug |
| 08/05/2009 | CN101501948A Method for applying a pin on an electrode base body |
| 08/05/2009 | CN100524989C Ignition device having an electrode tip formed from an iridium-based alloy |
| 08/04/2009 | CA2511148C Spark gap apparatus and method for electrostatic discharge protection |
| 07/30/2009 | US20090189502 Method of producing spark plug, and spark plug |
| 07/07/2009 | US7557495 Spark plug having precious metal pad attached to ground electrode and method of making same |
| 06/30/2009 | US7554253 Spark plug with increased durability and carbon fouling resistance |
| 06/23/2009 | US7550906 Spark plug having a noble-metal chip and method for manufacturing the same |
| 06/11/2009 | WO2009042557A3 Ignition device having an induction welded and laser weld reinforced firing tip and method of construction |
| 06/10/2009 | CN100499300C Center wire assembly for spark plug and its manufacture method, a ignition device |
| 06/04/2009 | WO2009069270A1 Static electricity countermeasure component and method for manufacturing the static electricity countermeasure component |
| 06/04/2009 | US20090140624 Spark plug internal combustion engine and method for producing the spark plug |
| 06/02/2009 | US7541724 Spark plug requiring low discharge voltage and having high self-cleaning capability |
| 05/28/2009 | WO2009066797A1 Spark plug |
| 05/28/2009 | WO2009066714A1 Spark plug for internal combustion engine and method of manufacturing spark plug |
| 05/28/2009 | WO2009066669A1 Deflection inspecting device for spark plug insulator, deflection inspecting method for spark plug insulator, and manufacturing method for spark plug insulator |
| 05/28/2009 | US20090134764 Spark plug for internal combustion engine and method for producing the spark plug |
| 05/27/2009 | EP2063510A1 Manufacturing device and manufacturing method for spark plug |
| 05/27/2009 | EP2063508A2 Spark plug for internal combustion engine and method for producing the spark plug |
| 05/27/2009 | EP2063507A2 Spark plug for internal combustion engine |
| 05/27/2009 | EP2063506A2 Spark plug for internal combustion engine and method for producing the spark plug |
| 05/22/2009 | WO2009063930A1 Spark plug for internal combustion engine |
| 05/21/2009 | US20090127997 Spark plug for internal combustion engine |
| 05/20/2009 | DE10025324B4 Herstellungsverfahren für eine Zündkerze Manufacturing method for a spark plug |
| 05/14/2009 | WO2009059340A1 Noble metal-coated spark plug |
| 05/07/2009 | WO2009058340A1 Pre-chamber igniter having adjustable electrode |
| 04/30/2009 | WO2007041068A3 Spark plug with welded sleeve on electrode |
| 04/22/2009 | EP2050172A1 Method for applying a pin on an electrode base body |
| 04/22/2009 | EP2050170A2 Ignition device having a reflowed firing tip and method of construction |
| 04/16/2009 | US20090096344 Sparkplugs and method to manufacture and assemble |
| 04/08/2009 | EP2045342A1 Noble metal alloy for spark plug and method for producing and processing the same |
| 04/02/2009 | WO2009042557A2 Ignition device having an induction welded and laser weld reinforced firing tip and method of construction |
| 03/19/2009 | WO2009036163A1 Roller spark gap |
| 03/19/2009 | WO2009034318A1 Ignition device electrodes, and manufacture thereof |
| 03/19/2009 | US20090072694 Sparkplug having improved heat removal capabilities and method to recycle used sparkplugs |
| 03/18/2009 | CN101388524A Air cleaning dust removing apparatus |
| 03/12/2009 | US20090066211 Method for manufacturing a spark plug having a laterally oriented ground electrode |
| 02/26/2009 | DE202008015598U1 Walzmaschine mit Gewindewalzen zum Walzen von Zündkerzen mit orientiertem Gewinde für Brennkraftmaschinen Thread rolling machine with rolls for rolling spark plugs with oriented thread for internal combustion engines |
| 02/18/2009 | EP2025048A2 Composite spark plug |
| 02/12/2009 | WO2009020141A1 Spark plug and its manufacturing method |
| 02/10/2009 | CA2376980C Spark plug shell having a bimetallic ground electrode, spark plug incorporating the shell, and method of making same |
| 02/05/2009 | WO2009017187A1 Spark plug for internal combustion engine and method of producing the same |
| 02/05/2009 | US20090033195 Spark plug for internal combustion engine and method of manufacturing the same |
| 02/04/2009 | EP2020713A1 Spark plug for internal combustion engine and method of manufacturing the same |
| 02/04/2009 | CN101359811A Spark plug for internal combustion engine and method of manufacturing the same |
| 01/29/2009 | WO2008137701A3 Igniter |
| 01/28/2009 | CN100456585C Spark plug with noble metal chip joined by unique laser welding and fabrication method thereof |
| 01/27/2009 | US7483562 Method of detecting protrudent adhered matters and method of making spark plug using the same |
| 01/27/2009 | US7481971 Iridium alloy |
| 01/15/2009 | US20090017712 Spark plug manufacturing method ensuring accurate and effective adjustment of spark gap |
| 01/14/2009 | EP1787367A4 Ignition device having a reflowed firing tip and method of making |
| 01/14/2009 | CN101346859A Method for manufacturing spark plug and spark plug |
| 01/08/2009 | US20090007618 Apparatus and Method of Producing Spark Plug |
| 01/07/2009 | EP2012397A2 Spark plug and method for its production |
| 12/18/2008 | US20080309214 Spark plug and method for production of a spark plug |
| 12/18/2008 | CA2634964A1 Process for preparing a sintered ceramic, sintered ceramic thus obtainedand spark plug comprising it |