| Patents for H01T 21 - Apparatus or processes specially adapted for the manufacture or maintenance of spark gaps or sparking plugs (1,750) |
|---|
| 09/21/2004 | US6794804 Production method of spark plug designed to provide high temperature oxidation resistance and weld strength and spark plug produced thereby |
| 09/21/2004 | US6794802 Spark plug for an internal combustion engine and method for producing a spark plug |
| 09/21/2004 | US6792786 Fabrication method of metal shell of spark plug |
| 09/15/2004 | EP1456922A1 Sealing device and sealing method |
| 09/14/2004 | US6791246 Spark plug and method for its manufacture |
| 09/14/2004 | US6791245 Glow plug and spark plug, and manufacturing method therefor |
| 09/14/2004 | US6790113 Method and apparatus for making spark plug |
| 09/09/2004 | US20040175854 Design, fabrication, testing, and conditioning of micro-components for use in a light-emitting panel |
| 09/09/2004 | US20040173588 Method for joining an electrode to a precious-metal section |
| 08/25/2004 | EP1312144A4 Ignition device having a firing tip formed from a yttrium-stabilized platinum-tungsten alloy |
| 07/29/2004 | US20040145290 Method of making metallic shell for spark plug, method of making spark plug having metallic shell and spark plug produced by the same |
| 07/28/2004 | EP1441427A1 Method of making metallic shell for spark plug, method of making spark plug having metallic shell and spark plug produced by the same |
| 07/27/2004 | US6768249 Spark plug and producing method therefor |
| 07/22/2004 | US20040141277 Main element of a surge protector device |
| 07/22/2004 | DE10354439A1 Zündkerze und Herstellungsverfahren dafür A spark plug and manufacturing method thereof |
| 07/21/2004 | EP1247317A4 Ignition plug and method of manufacture |
| 07/13/2004 | US6762539 Spark plug for an internal combustion engine and method for production of a middle electrode for an internal combustion engine spark plug |
| 07/08/2004 | US20040129683 Spark plug and method for manufacturing the same |
| 07/08/2004 | DE4409412B4 Zündkerze und Verfahren zu ihrer Herstellung Spark plug and method for their preparation |
| 07/07/2004 | EP1435763A1 Determining defects in oled devices |
| 07/07/2004 | EP1110284B1 Spark plug electrode |
| 06/30/2004 | EP1434325A2 Spark plug |
| 06/30/2004 | EP1434324A2 Spark plug |
| 06/30/2004 | EP1434323A2 Spark plug |
| 06/29/2004 | US6756722 Method for fabricating spark plug with piezoelectric sensor and spark plug fabricated by the same |
| 06/24/2004 | WO2004054055A1 Method for the production of electrodes used for high-performance spark plugs |
| 06/24/2004 | WO2004015660A3 Design, fabrication, testing, and conditioning of micro-components for use in a light-emitting panel |
| 06/24/2004 | DE10255187A1 Joining electrode of spark plug to precious metal section comprises joining precious metal section with electrode using heat from laser beam |
| 06/22/2004 | USRE38536 Spark plug and method of producing the same |
| 06/22/2004 | US6752677 Method for producing spark plug |
| 06/17/2004 | US20040113628 Method for inspecting ignition device for internal combustion engine and inspection device |
| 06/15/2004 | US6750598 Spark plug |
| 06/15/2004 | US6750597 Method for manufacturing spark plug and spark plug |
| 06/01/2004 | US6744189 Spark plug |
| 05/27/2004 | US20040100178 Spark plug and its manufacturing method |
| 05/25/2004 | US6741015 Spark plug |
| 05/20/2004 | US20040097160 Determining defects in OLED devices |
| 05/13/2004 | US20040092193 Method of manufacturing spark plug |
| 05/06/2004 | EP1416599A2 Spark plug and method for manufacturing the same |
| 05/04/2004 | US6731490 Surge absorber and production method thereof |
| 04/29/2004 | US20040078972 Manufacturing method for a spark plug |
| 04/29/2004 | US20040078971 Method of manufacturing center electrode for spark plug |
| 04/28/2004 | EP1413029A1 Method for placing a precious metal tip on an electrode, electrode and spark plug |
| 04/20/2004 | US6724132 Spark plug for an engine for a cogeneration system |
| 04/15/2004 | US20040070323 Spark plug of an internal combustion engine |
| 04/13/2004 | US6721157 Electrostatic discharge device of surface mount type and fabricating method thereof |
| 04/08/2004 | US20040067712 Adjusting method for centering earth electrode at center electrode of spark gap of spark plug |
| 04/08/2004 | US20040066126 Spark plug |
| 04/08/2004 | US20040066125 Platinun alloy composition for a spark plug electrode for an internal combustion engine |
| 03/31/2004 | CN1486523A Robust torch jet spark plug electrode |
| 03/24/2004 | EP1121736A4 Application of precious metal to spark plug electrode |
| 03/18/2004 | US20040051537 Method of inspecting insulators to detect defects |
| 03/17/2004 | CN1142462C Fine electrospark process of forming electrode |
| 03/16/2004 | US6705009 Process for producing middle electrode |
| 03/16/2004 | CA2291351C Spark plug for internal combustion engine having better self-cleaning function |
| 03/11/2004 | DE10336226A1 Spark plug performance investigation system for vehicle internal combustion engine, consists of sleeve fitting over spark plug with coil and connected to plug assembly |
| 03/04/2004 | US20040041506 Spark plug and method for manufacturing the spark plug |
| 03/02/2004 | US6700317 Spark plug for an internal combustion engine and manufacturing method of the same |
| 03/02/2004 | US6699807 Glass ceramic material, method for producing the same and spark plug containing such a glass ceramic material |
| 02/24/2004 | US6697242 Main element of a surge protector device |
| 02/24/2004 | US6695663 Method for manufacturing spark plug and apparatus for carrying out the same |
| 02/19/2004 | WO2004015831A1 Method for detecting projecting adherend and method for producing super plug using that method |
| 02/19/2004 | WO2004015660A2 Design, fabrication, testing, and conditioning of micro-components for use in a light-emitting panel |
| 02/12/2004 | US20040029480 Method and apparatus for making spark plug |
| 02/10/2004 | US6688932 Method for manufacturing spark plug and caulking metallic mold |
| 02/05/2004 | US20040020380 Printing apparatus and method for spark plug insulator |
| 02/05/2004 | DE10327595A1 Ignition plug for internal combustion engine has central electrode and earth electrode, precious metal ignition tip with cutaway section on one of its lateral surfaces embedded in electrode |
| 02/04/2004 | CN1472854A Spark plug and manufacture thereof |
| 02/04/2004 | CN1137330C Preheating plug and spark plug and its producing method |
| 01/28/2004 | EP1385242A1 Spark plug |
| 01/22/2004 | WO2004008596A2 Ignition device having an electrode formed from an iridium-based alloy |
| 01/22/2004 | WO2004007782A1 Alloy |
| 01/15/2004 | DE10229338A1 Zündkerze Spark plug |
| 01/13/2004 | US6676468 Method of producing a spark plug |
| 01/08/2004 | US20040004425 Robust torch jet spark plug electrode |
| 01/02/2004 | EP1376792A2 Method and apparatus for making spark plug |
| 01/02/2004 | EP1376791A1 Spark plug and method for manufacturing the spark plug |
| 12/24/2003 | CN1463061A Method of mfg. spark plug |
| 12/10/2003 | EP1369969A1 Method of manufacturing spark plug |
| 12/09/2003 | US6659826 Manufacturing method for a spark plug |
| 12/09/2003 | CA2187243C Diesel engine exhaust particle collection device |
| 12/02/2003 | US6655012 Fabrication method of surge protector device and the device fabricated by the method |
| 11/26/2003 | EP1105953B1 Sealing a spark plug electrode |
| 11/25/2003 | US6653766 Spark plug and method of manufacturing same |
| 11/20/2003 | US20030214208 Chromate film-containing plug metal component and method for producing the same |
| 11/12/2003 | EP1360747A1 Platinum alloy composition for a spark plug electrode for an internal combustion engine |
| 11/06/2003 | US20030205957 Middle electrode with precious metal reinforcement and a process for producing the same |
| 10/29/2003 | EP1356555A1 Method for producing a spark plug electrode |
| 10/29/2003 | EP1356554A2 Robust torch jet spark plug electrode |
| 10/14/2003 | US6632381 Production process for alumina based insulator |
| 10/09/2003 | DE10149630C1 Zündkerze und Verfahren zu ihrer Herstellung Spark plug and method for their preparation |
| 10/08/2003 | EP1351355A2 Ignition device for an internal combustion engine and a manufacturing method therefor |
| 10/07/2003 | US6630771 Spark plug electrode including a profiled noble-metal part |
| 10/02/2003 | US20030184202 Ignition device for internal combustion engine and a manufacturing method therefor |
| 09/25/2003 | US20030181121 Method of making a spark plug |
| 09/17/2003 | CN1442936A Automobile engine spark plug hiaving heat transfer device and its manufacturing method |
| 09/11/2003 | US20030168955 Spark plug and method for manufacturing the spark plug |
| 09/11/2003 | US20030168954 Method for manufacturing spark plug, and spark plug |
| 09/03/2003 | EP1341282A2 Method of making a spark plug |
| 09/03/2003 | EP1341281A2 Method for manufacturing spark plug and spark plug |