| 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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| 12/17/2008 | EP2003753A1 Ignition plug and method for the manufacture of an ignition plug |
| 12/09/2008 | CA2379085C Spark plug including a wear-resistant electrode tip made from a co-extruded composite material, and method of making same |
| 11/26/2008 | EP1995520A1 Method for the assembly of a spark plug |
| 11/20/2008 | US20080284305 Small-diameter spark plug with resistive seal |
| 11/13/2008 | WO2008137701A2 Igniter |
| 11/11/2008 | US7449824 Spark plug |
| 11/05/2008 | EP1706924B1 Spark plug having a multi-tiered center wire assembly |
| 10/30/2008 | DE102007018841A1 Impulse waves producing device for medical treatment of patient, has rear retaining surface limiting transverse path between ultimate state, which corresponds to small distance between electrodes, and another ultimate state |
| 10/22/2008 | CN100428595C Method for producing sparking plug |
| 10/16/2008 | WO2008123511A1 Spark plug manufacturing method |
| 10/16/2008 | WO2008123344A1 Spark plug manufacturing method, and spark plug |
| 10/16/2008 | WO2008123343A1 Spark plug manufacturing method |
| 10/16/2008 | WO2008123342A1 Spark plug, and its manufacturing method |
| 10/08/2008 | CN101282024A Technique for retrofitting waste and old sparking plug |
| 10/02/2008 | US20080238283 Plasma jet spark plug and manufacturing method therefor |
| 10/01/2008 | EP1976082A2 Method for producing spark plug and spark plug |
| 10/01/2008 | EP1976081A2 Plasma jet spark plug and manufacturing method therefor |
| 09/10/2008 | CN100418278C Spark plug and related manufacturing method |
| 09/03/2008 | EP1965475A1 Spark plug and method for manufacturing spark plug |
| 08/27/2008 | EP1961080A2 Spark plug with multi-layer firing tip |
| 08/27/2008 | EP1961079A2 Method of forming a spark plug with multi-layer firing tip |
| 08/07/2008 | US20080185948 Spark plug electrode and process for making |
| 08/06/2008 | CN100409518C Method for connecting spark plug electrode and noble metal, and said spark plug electrode |
| 08/05/2008 | US7408293 Spark plug including ground elcetrode carrier casing |
| 07/30/2008 | EP1950856A1 Method for manufacturing spark plug and spark plug |
| 07/30/2008 | EP1949513A2 Spark plug having precious metal pad attached to ground electrode and method of making same |
| 07/24/2008 | US20080174222 Ignition device having an induction welded and laser weld reinforced firing tip and method of construction |
| 07/24/2008 | US20080174221 Ignition Device Having an Electrode With a Platinum Firing Tip and Method of Construction |
| 07/09/2008 | CN101218721A Ignition device having a reflowed firing tip and method of making |
| 06/26/2008 | WO2008074438A1 Spark plug and insulator composed of high-purity aluminium oxide ceramic |
| 06/18/2008 | CN101202422A Chip-type air discharging protection component and method for making same |
| 06/11/2008 | EP1929598A2 Spark plug with welded sleeve on electrode |
| 06/10/2008 | US7385339 Ignition device having a reflowed firing tip and method of making |
| 05/29/2008 | WO2008062880A1 Manufacturing device and manufacturing method for spark plug |
| 05/15/2008 | WO2008055483A1 Ignition device, in particular spark plug for an internal combustion engine and method for production |
| 04/16/2008 | CN100382401C Spark plug producing method |
| 04/09/2008 | CN100380756C Spark plug producing method and interstitial metal mold |
| 04/01/2008 | US7352120 Ignition device having an electrode tip formed from an iridium-based alloy |
| 03/27/2008 | US20080074025 Spark plug for internal combustion engine designed to keep ignitability of fuel high |
| 03/25/2008 | US7346983 Method for manufacturing spark plug |
| 03/12/2008 | EP1203428B1 Spark plug including a wear-resistant electrode tip made from a co-extruded composite material, and method of making same |
| 02/27/2008 | EP1892808A2 Method for manufacturing spark plug and apparatus for carryingout the same |
| 02/07/2008 | WO2008015179A1 Method for applying a pin on an electrode base body |
| 02/07/2008 | US20080029053 Method for producing a spark plug, and spark plug |
| 02/07/2008 | DE102006036440A1 Verfahren zum Aufbringen eines Stiftes auf einen Elektrodengrundkörper A method of applying a pen on a main electrode body |
| 01/31/2008 | WO2008013159A1 Noble metal alloy for spark plug and method for producing and processing the same |
| 01/29/2008 | US7323811 Noble metal tip for spark plug electrode and method of making same |
| 01/29/2008 | US7323810 Spark plug for an internal combustion engine |
| 01/24/2008 | US20080018216 High power discharge fuel ignitor |
| 01/24/2008 | DE102006062737A1 Verfahren zum Herstellen einer Zündkerze A method for manufacturing a spark plug |
| 01/23/2008 | EP1881573A2 Ignition device, in particular ignition plug for a combustion engine and method for positioning at least one ground electrode in the ignition device |
| 01/22/2008 | US7321187 Spark plug and method for manufacturing the spark plug |
| 01/16/2008 | CN100362712C Mfg. method of spark plug and its mfg. appts. |
| 01/16/2008 | CN100362711C Mfg. method of spark plug and its mfg. appts. |
| 01/09/2008 | CN101103504A Noble metal tip for spark plug electrode and method of making same |
| 12/13/2007 | WO2006017687A3 Ignition device having a reflowed firing tip and method of making |
| 12/12/2007 | EP1360747B1 Platinum alloy composition for a spark plug electrode for an internal combustion engine |
| 12/12/2007 | CN101088198A Air ionization module and method |
| 12/11/2007 | US7306502 Spark plug with noble metal chip joined by unique laser welding and fabrication method thereof |
| 12/06/2007 | US20070278924 Low cost spark plug manufactured from conductive loaded resin-based materials |
| 11/28/2007 | CN100352117C Method of mfg. spark plug |
| 11/21/2007 | EP1338065B1 Spark plug for an internal combustion engine and method for production of a middle electrode for an internal combustion engine spark plug |
| 11/07/2007 | CN101068067A Method and device for manufacturing spark plug |
| 11/07/2007 | CN101068066A Method and device for manufacturing spark plug |
| 11/06/2007 | US7291961 Spark plug having a specific structure of noble metal tip on ground electrode |
| 10/31/2007 | EP1850432A2 Ignition plug |
| 10/31/2007 | EP1604436B1 Spark plug and method for producing it |
| 10/31/2007 | DE102006019927A1 Spark plug for use in combustion chamber of engine, has body electrode forming discharge gap for ignition spark between body and central electrodes, which has precious metal reinforcement that includes covering of precious metal surfaces |
| 10/31/2007 | CN100346545C Sparking plug |
| 10/30/2007 | US7288014 Design, fabrication, testing, and conditioning of micro-components for use in a light-emitting panel |
| 10/25/2007 | WO2003019746A3 A spark plug for an internal combustion engine |
| 10/17/2007 | CN101057378A Ignition device having an electrode tip formed from an iridium-based alloy |
| 10/17/2007 | CN100344037C Metal element with chromate membrane for plug use and preparation process thereof |
| 10/10/2007 | CN100342603C Overpressure suction device and making method |
| 09/26/2007 | EP1837965A2 Spark plug |
| 09/20/2007 | WO2007105695A1 Method for manufacturing spark plug and spark plug |
| 09/19/2007 | EP1835579A2 Spark plug for use in an internal-combustion engine and a method for manufacturing the same |
| 09/06/2007 | DE102006009790A1 Reinforcing method for sheathing a central electrode (CE) in a spark plug for internal combustion engines uses a spark point of metal material capable of greater wear than the CE's other material |
| 08/28/2007 | US7261609 Spark plug manufacturing apparatus and method of manufacturing spark plug |
| 07/11/2007 | CN1326301C Spark plug |
| 06/13/2007 | CN2911232Y Check window cover of spark plug |
| 06/12/2007 | US7230369 Spark plug |
| 06/07/2007 | US20070128964 Spark plug with noble metal chip joined by unique laser welding and fabrication method thereof |
| 05/29/2007 | US7224108 Low cost spark plug manufactured from conductive loaded resin-based materials |
| 05/29/2007 | US7223144 Low cost spark plug manufactured from conductive loaded resin-based materials |
| 05/23/2007 | EP1787367A2 Ignition device having a reflowed firing tip and method of making |
| 05/22/2007 | US7221078 Spark plug with improved noble metal chip |
| 05/16/2007 | CN1316702C Equipment and method for producing spark plug |
| 05/10/2007 | WO2007051677A1 Spark plug electrode and method for producing a spark plug electrode |
| 05/10/2007 | DE102005052425A1 Zündkerzenelektrode und Verfahren zum Herstellen einer Zündkerzenelektrode A spark plug electrode and method of making a spark plug electrode |
| 05/09/2007 | EP1782513A2 Ignition device having an electrode tip formed from an iridium-based alloy |
| 05/01/2007 | CA2391686C Method for producing spark plug |
| 04/25/2007 | EP1413029B1 Method for placing a precious metal tip on an electrode, electrode and spark plug |
| 04/25/2007 | EP1121736B1 Application of precious metal to spark plug electrode |
| 04/25/2007 | EP0982820B1 Spark plug, alumina insulator for spark plug, and method of manufacturing the same |
| 04/18/2007 | EP1775808A1 Spark plug and method for producing spark plug |
| 04/18/2007 | EP1247317B1 Ignition plug and method of manufacture |
| 04/18/2007 | CN1311597C Sparking plug and manufacturing method thereof |
| 04/05/2007 | US20070077846 Method for manufacturing an ignition plug and ignition plug produced in that manner |
| 04/04/2007 | CN1943087A 火花塞 Spark plug |