| 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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| 09/20/2005 | CA2386796C Image-forming machine having charger cleaning activation after an arcing fault and related method |
| 09/15/2005 | US20050200255 Spark plug and method for manufacturing the same |
| 09/15/2005 | DE102005010048A1 Spark plug has a central electrode or a mass electrode with a noble metal chip |
| 09/14/2005 | EP1573873A1 Method for the production of electrodes used for high-performance spark plugs |
| 09/09/2005 | WO2005083855A1 Noble metal tip for spark plug electrode and method of making same |
| 09/09/2005 | CA2557349A1 Noble metal tip for spark plug electrode and method of making same |
| 09/08/2005 | US20050194878 Spark plug |
| 09/08/2005 | DE102005005321A1 Zündkerze mit hochfester Elektrodenverbindungsstelle und Herstellungsverfahren dafür Spark plug electrodes with high strength joint and manufacturing method thereof |
| 09/07/2005 | CN1665087A Spark plug and method for manufacturing the same |
| 08/11/2005 | US20050176332 Method for producing a spark plug electrode |
| 08/11/2005 | US20050174026 Spark plug |
| 08/11/2005 | US20050174025 Spark plug designed to ensure high strength of electrode joint and production method thereof |
| 08/03/2005 | CN1650491A Method for detecting projecting adherend and method for producing super plug using said method |
| 08/02/2005 | US6923699 Method of making a spark plug |
| 07/26/2005 | US6922007 Spark plug with glaze coating |
| 07/20/2005 | EP1285481B1 Method and apparatus for making spark plug |
| 07/14/2005 | DE102004057248A1 Zündkerze Spark plug |
| 07/13/2005 | EP1553672A1 Method for detecting projecting adherend and method for producing super plug using that method |
| 07/12/2005 | US6916221 Determining defects in OLED devices |
| 07/12/2005 | US6915759 Printing apparatus and method for spark plug insulator |
| 07/07/2005 | DE10348778B3 Sparking plug electrode has a primary material combined with 2-20 per cent secondary material in powder pure metal form |
| 06/23/2005 | DE10352792A1 Zündkerze und Verfahren zu ihrer Herstellung Spark plug and method for their preparation |
| 06/21/2005 | US6909286 Method of inspecting insulators to detect defects including measuring leakage current flowing through the insulator |
| 06/21/2005 | US6909226 Method for manufacturing spark plug, and spark plug |
| 06/15/2005 | CN1628402A Spark plug for an internal combustion engine |
| 06/09/2005 | US20050122024 Sealing device and sealing method |
| 06/02/2005 | WO2005050803A1 Spark plug manufacturing method |
| 06/02/2005 | US20050116598 Spark plug |
| 06/01/2005 | EP1535268A2 Design, fabrication, testing, and conditioning of micro-components for use in a light-emitting panel |
| 06/01/2005 | EP1187982B1 Device for injecting a fuel into a combustion chamber of an internal combustion engine cylinder |
| 05/26/2005 | WO2005048428A1 Spark plug having a multi-tiered center wire assembly |
| 05/26/2005 | WO2005048427A1 Spark plug center electrode assembly |
| 05/26/2005 | WO2005048426A1 Glass sealed spark plug assembly |
| 05/26/2005 | WO2005048425A1 Spark plug with ground electrode having mechanically locked precious metal feature |
| 05/24/2005 | CA2300236C Broad range surge absorber without chips |
| 05/19/2005 | DE102004044397A1 Zündkerze für Gasmotor Spark plug for gas engine |
| 05/18/2005 | EP1531530A2 Spark plug and method for its production |
| 05/17/2005 | US6893310 Apparatus and method for adjusting spark gap of spark plug |
| 05/17/2005 | CA2296887C Surge absorber without chips |
| 05/10/2005 | US6891318 Structure of spark plug designed to provide higher durability and fabrication method thereof |
| 05/05/2005 | US20050095944 Design, fabrication, testing, and conditioning of micro-components for use in a light-emitting panel |
| 05/05/2005 | US20050093414 Glass sealed spark plug assembly |
| 05/05/2005 | US20050093413 Spark plug with ground electrode firing tip |
| 05/05/2005 | US20050093412 Spark plug center electrode assembly |
| 05/05/2005 | US20050093411 Spark plug having a multi-tiered center wire assembly |
| 04/26/2005 | US6885137 Spark plug and its manufacturing method |
| 04/26/2005 | US6885136 Ignition device having an electrode formed from an iridium-based alloy |
| 04/26/2005 | US6885135 Spark plug and its manufacturing method |
| 04/14/2005 | US20050077807 Method-for producing a spark plug, and spark plug |
| 04/13/2005 | EP1521857A1 Alloy |
| 03/30/2005 | EP1519460A2 Method for producing a spark plug and spark plug |
| 03/29/2005 | US6873094 Ignition device for internal combustion engine and a manufacturing method therefor |
| 03/24/2005 | US20050062386 Spark plug |
| 03/24/2005 | US20050062385 Spark plug for a gas engine |
| 03/24/2005 | DE102004036738A1 Zündkerze mit Laserverschweissystem Edelmetallplättchen und Herstellungsverfahren dafür Spark plug with Laserverschweissystem noble metal chip and manufacturing method thereof |
| 03/23/2005 | EP1517420A2 Spark plug and related manufacturing method |
| 03/23/2005 | EP1517416A2 Spark plug |
| 03/23/2005 | EP1305858B1 Spark plug for an internal combustion engine and method for producing a spark plug |
| 03/23/2005 | CN1599968A Sealing device and sealing method |
| 03/23/2005 | CN1599162A Spark plug and related manufacturing method |
| 03/22/2005 | US6869328 Electrodes, method for production thereof and spark plugs with such an electrode |
| 03/17/2005 | US20050057133 Spark plug and related manufacturing method |
| 03/10/2005 | US20050052106 Noble metal tip for spark plug electrode and method of making same |
| 02/24/2005 | US20050042965 Method and apparatus for manufacturing spark plug |
| 02/24/2005 | US20050039332 Method and apparatus for manufacturing spark plug |
| 02/23/2005 | CN1585220A Spark plug with noble metal chip joined by unique laser welding and fabrication method thereof |
| 02/22/2005 | US6858975 Spark plug having an oil film on an intermediate portion of the insulator or intermediate portion of the metallic shell |
| 02/08/2005 | US6853116 Structure of spark plug designed to provide higher durability and ignitability of fuel |
| 02/03/2005 | US20050023949 Spark plug with noble metal chip joined by unique laser welding and fabrication method thereof |
| 02/01/2005 | US6849995 Spark plug and method for manufacturing the spark plug |
| 01/25/2005 | US6846214 Method of manufacturing a spark plug for an internal combustion engine |
| 01/20/2005 | DE102004026253A1 Zündkerze Spark plug |
| 01/18/2005 | US6844735 Method for inspecting ignition device for internal combustion engine and inspection device |
| 01/12/2005 | EP1221187B1 Method of manufacturing a spark plug with concentrically disposed double ring ground electrode |
| 01/04/2005 | US6838809 Chromate film-containing plug metal component and method for producing the same |
| 12/30/2004 | US20040266306 Noble metal electric discharge chip manufacturing method and spark plug manufacturing method using the noble metal discharge chips |
| 12/30/2004 | US20040263041 Ignition device having an electrode tip formed from an iridium-based alloy |
| 12/21/2004 | US6833658 Middle electrode with precious metal reinforcement and a process for producing the same |
| 12/14/2004 | US6831397 Spark plug and a method of producing the same |
| 12/07/2004 | US6827620 Method of manufacturing spark plug with noble metal chip for internal combustion engine |
| 12/02/2004 | WO2004105203A1 Spark plug and method for producing same |
| 12/02/2004 | US20040239224 Spark plug for an internal combusition engine |
| 12/02/2004 | US20040239223 Spark plug |
| 11/24/2004 | CN2658981Y Plug cap and its structure |
| 11/23/2004 | US6822626 Design, fabrication, testing, and conditioning of micro-components for use in a light-emitting panel |
| 11/23/2004 | US6822377 Ignition device and method for producing it |
| 11/16/2004 | US6819033 Spark plug and method of manufacturing same |
| 11/16/2004 | US6819031 Spark plug and a method of producing the same |
| 11/11/2004 | DE102004018272A1 Herstellungsverfahren und Herstellungsvorrichtung für eine Zündkerze Production method and production apparatus for a spark plug |
| 11/10/2004 | CN1175714C Surface discharge element and method of making the same |
| 11/03/2004 | EP1473810A2 Method for producing a chromate film-containing plug metal component |
| 10/28/2004 | DE102004018113A1 Verfahren zur Herstellung von elektrischen Entladungschips aus Edelmetall und Verfahren zur Herstellung von Zündkerzen unter Verwendung der Entladungschips aus Edelmetall A process for the manufacture of electric discharge chips made of precious metal and method for producing spark plugs using the chips discharge from the noble metal |
| 10/26/2004 | US6809463 Spark plug and method for manufacturing the spark plug |
| 10/13/2004 | EP1286442B1 A spark plug for an internal combustion engine |
| 10/05/2004 | US6799367 Manufacturing method for a spark plug |
| 09/30/2004 | WO2004084367A1 Spark plug and method for producing it |
| 09/30/2004 | US20040192155 Method for manufacturing spark plug and apparatus for manufacturing spark plug |
| 09/30/2004 | US20040189169 Method for manufacturing a spark plug, and spark plug |
| 09/23/2004 | US20040183419 Glow plug and spark plug, and manufacturing method therefor |
| 09/23/2004 | US20040183418 Ignition device having an electrode formed from an iridium-based alloy |