| 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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| 04/04/2007 | CN1309130C Method and apparatus for making spark plug |
| 04/03/2007 | US7199511 Spark plug with noble metal chip joined by unique laser welding and fabrication method thereof |
| 04/03/2007 | CA2561220A1 Process for preparing an igniter plug, and igniter plug thus obtained |
| 03/20/2007 | US7192324 Method for producing a spark plug electrode |
| 03/13/2007 | US7190106 Spark plug with ground electrode having mechanically locked precious metal feature |
| 03/08/2007 | US20070054581 Method and apparatus for manufacturing spark plug for internal combustion engine |
| 03/07/2007 | EP1760852A1 Spark plug |
| 03/07/2007 | EP1535268A4 Design, fabrication, testing, and conditioning of micro-components for use in a light-emitting panel |
| 03/01/2007 | WO2006039147A3 Air ionization module and method |
| 02/28/2007 | EP1010228B1 A transient voltage protection device and method of making same |
| 02/14/2007 | CN1913264A 火花塞 Spark plug |
| 02/08/2007 | DE69304812C5 Zündkerze Spark plug |
| 02/06/2007 | US7172483 Method of making metallic shell for spark plug, method of making spark plug having metallic shell and spark plug produced by the same |
| 01/24/2007 | EP1312144B1 Ignition device having a firing tip formed from a yttrium-stabilized platinum-tungsten alloy |
| 01/24/2007 | CN1297047C Sparking plug and producing method thereof |
| 12/26/2006 | US7154213 Ground electrode structure of a spark plug for a gas engine |
| 12/21/2006 | DE4424789B4 Verfahren zur Herstellung einer fließgepreßten, als Verbundkörper ausgebildeten Elektrode A process for producing a extruded, formed as a composite body electrode |
| 12/13/2006 | CN1879271A Spark plug having a multi-tiered center wire assembly |
| 12/07/2006 | US20060276097 Spark plug manufacturing method |
| 12/07/2006 | DE102006000206A1 Zündkerzenherstellungsgerät und Zündkerzenherstellungsverfahren Spark plugs and spark plug manufacturing device manufacturing method |
| 11/16/2006 | DE102006015978A1 Mikrozwischenraumverfahren und -ESD-Schutzvorrichtung Micro-gap method and ESD protection device |
| 11/15/2006 | EP1268355B1 Glass ceramic material, method for producing the same and spark plug containing such a glass ceramic material |
| 11/09/2006 | WO2005117220A3 Low cost spark plug manufactured from conductive loaded resin-based materials |
| 11/08/2006 | EP1719223A1 Noble metal tip for spark plug electrode and method of making same |
| 11/07/2006 | US7132782 Spark plug and method of producing spark plug |
| 11/07/2006 | US7131191 Method for manufacturing noble metal electric discharge chips for spark plugs |
| 11/02/2006 | US20060246807 Spark plug manufacturing apparatus and method of manufacturing spark plug |
| 10/31/2006 | US7128630 Method for manufacturing a spark plug with glaze coating |
| 10/26/2006 | US20060238092 Spark plug and method for manufacturing the spark plug |
| 10/26/2006 | DE102005018674A1 Elektrode für eine Zündkerze The electrode for a spark plug |
| 10/19/2006 | DE102005016848A1 Überspannungsableiter Surge |
| 10/17/2006 | US7122947 Glow plug and spark plug, and manufacturing method therefor |
| 10/11/2006 | EP1710039A1 Method and device for producing an electrode for spark plugs with noble metal chip |
| 10/05/2006 | US20060223406 Method and device for manufacturing a noble metal armored electrode for a sparking plug |
| 10/05/2006 | US20060220510 Spark plug and method for producing same |
| 10/05/2006 | DE102005015413A1 Precious metal-reinforced electrode manufacturing method for spark plugs involves heating precious metal piece placed on electrode base, and then pressing precious metal piece |
| 10/04/2006 | EP1706924A1 Spark plug having a multi-tiered center wire assembly |
| 09/26/2006 | US7112112 Method and apparatus for making a spark plug with a predetermined spark gap |
| 09/12/2006 | US7106571 Main element of a surge protector device |
| 09/12/2006 | US7105991 Spark plug with sealing ring around center electrode |
| 08/29/2006 | US7097525 Method for manufacturing spark plug using bending process for earth electrode |
| 08/16/2006 | CN1820398A Ignition device having an electrode tip formed from an iridium-based alloy |
| 08/08/2006 | US7086919 Detection and repair system and method thereof |
| 08/03/2006 | DE4208533B4 Vorrichtung und Verfahren zur Erfassung eines mechanischen Defekts in einem elektrischen fehlerhaft arbeitenden Isolator Apparatus and method for detecting a mechanical defect in an electrical malfunctioning insulator |
| 08/02/2006 | EP1686666A1 Spark plug manufacturing method |
| 08/01/2006 | US7084558 Spark plug and method for manufacturing the spark plug |
| 08/01/2006 | US7083491 Method of manufacturing plasma display panels and baking panel device used for the method |
| 08/01/2006 | US7083488 Method for manufacturing spark plug and apparatus for manufacturing spark plug |
| 07/27/2006 | US20060165554 Alloy |
| 07/25/2006 | US7081274 Glaze baked at relatively low temperature less to cause air bubbles to remain; excellent in chipping resistance. |
| 07/19/2006 | EP1680844A1 Spark plug center electrode assembly |
| 07/19/2006 | CN1265522C Spark plug, alumina insulator for spark plug, and method of manufacturing the same |
| 07/11/2006 | US7073256 Method of manufacturing center electrode for spark plug |
| 07/05/2006 | EP1677399A2 Spark plug |
| 06/13/2006 | US7059926 Method of making a spark plug having a multi-tiered center wire assembly |
| 05/31/2006 | CN1781225A Spark plug and method for producing same |
| 05/23/2006 | US7049733 Spark plug center electrode assembly |
| 05/18/2006 | US20060103284 Spark plug with ground electrode having mechanically locked precious metal feature |
| 05/18/2006 | US20060103283 Spark plug and method for producing it |
| 05/16/2006 | US7045939 Spark plug having a welded electrode and the method of producing the same |
| 05/16/2006 | US7043813 Manufacturing method for a spark plug |
| 05/11/2006 | US20060099872 Method of making a spark plug having a multi-tiered center wire assembly |
| 04/27/2006 | WO2006008659A3 Ignition device having an electrode tip formed from an iridium-based alloy |
| 04/12/2006 | CN1251374C Surge absorber with no-chip |
| 04/12/2006 | CN1251373C Surge absorber without chips |
| 04/04/2006 | US7021980 Adjusting method for centering earth electrode at center electrode of spark gap of spark plug |
| 03/30/2006 | DE102004046895A1 Spark plug for internal combustion engine has tubular insulator inside housing which screws into cylinder head, and has central electrode with resistor to limit current flowing across spark gap |
| 03/28/2006 | US7019448 Spark plug having a multi-tiered center wire assembly |
| 03/14/2006 | US7011560 Spark plug with ground electrode having mechanically locked precious metal feature |
| 03/07/2006 | US7007653 Robust torch jet spark plug electrode |
| 03/01/2006 | EP1356554B1 Robust torch jet spark plug electrode |
| 03/01/2006 | EP1183762B1 Spark plug shell having a bimetallic ground electrode, spark plug incorporating the shell, and method of making same |
| 02/28/2006 | US7004809 Illuminant for discharge lamp |
| 02/15/2006 | EP1626469A1 Spark plug and method for producing same |
| 02/14/2006 | US6997767 Method for manufacturing a spark plug, and spark plug |
| 02/02/2006 | DE19641856B4 Zündkerze für einen Verbrennungsmotor A spark plug for an internal combustion engine |
| 01/31/2006 | US6992426 Spark plug of an internal combustion engine |
| 01/26/2006 | WO2006008659A2 Ignition device having an electrode tip formed from an iridium-based alloy |
| 01/26/2006 | CA2574761A1 Ignition device having an electrode tip formed from an iridium-based alloy |
| 01/04/2006 | EP1612898A1 Spark gap apparatus and method for electrostatic discharge protection |
| 01/04/2006 | EP1612897A1 Spark gap apparatus and method for electrostatic discharge protection |
| 12/22/2005 | WO2004008596A3 Ignition device having an electrode formed from an iridium-based alloy |
| 12/15/2005 | DE102004023459A1 Verfahren zum Herstellen einer Zündkerze A method for manufacturing a spark plug |
| 12/14/2005 | EP1604436A1 Spark plug and method for producing it |
| 12/08/2005 | WO2005117220A2 Low cost spark plug manufactured from conductive loaded resin-based materials |
| 12/08/2005 | US20050271263 Method of detecting projecting adherend and method for producing super plug using that method |
| 11/17/2005 | DE102004018933A1 Verfahren zur Herstellung einer Mittelelektrode einer Zündkerze A method of manufacturing a center electrode of a spark plug |
| 11/16/2005 | EP1596482A1 Manufacturing method of a spark plug |
| 11/10/2005 | DE102004019205A1 Manufacturing central electrode for ignition plugs in rivet, involves manufacturing rivet from coated wire containing phase with precious metal and with rivet core in rivet casing forming round compression |
| 11/10/2005 | DE102004019153A1 Zündkerze Spark plug |
| 11/03/2005 | WO2005104319A1 Spark plug |
| 11/03/2005 | US20050242695 Method-for producing a spark plug, and spark plug |
| 10/18/2005 | US6956319 Structure of spark plug designed to provide higher wear resistance to center electrode and production method thereof |
| 10/13/2005 | US20050227567 Spark plug |
| 09/29/2005 | US20050215160 Higher-performance spark plug and ramrod engine ignition system using piezo-electric enhancement components |
| 09/29/2005 | DE102005009522A1 Zündkerze Spark plug |
| 09/28/2005 | CN1675667A Design, fabrication, testing, and conditioning of micro-components for use in a light-emitting panel |
| 09/22/2005 | US20050208862 Low cost spark plug manufactured from conductive loaded resin-based materials |
| 09/22/2005 | US20050206289 Low cost spark plug manufactured from conductive loaded resin-based materials |
| 09/21/2005 | EP1576707A2 Ignition device having an electrode formed from an iridium-based alloy |