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Patent applications and USPTO patent grants for Kunitomo; Iwao.The latest application filed is for "spark plug for internal combustion engine".
Patent | Date |
---|---|
Spark plug for internal combustion engine Grant 9,000,658 - Kunitomo , et al. April 7, 2 | 2015-04-07 |
Plasma jet ignition plug Grant 8,047,172 - Nakamura , et al. November 1, 2 | 2011-11-01 |
Spark Plug For Internal Combustion Engine App 20110025186 - Kunitomo; Iwao ;   et al. | 2011-02-03 |
Spark plug for internal combustion engine Grant 7,663,296 - Kunitomo , et al. February 16, 2 | 2010-02-16 |
Plasma Jet Ignition Plug App 20090194053 - Nakamura; Toru ;   et al. | 2009-08-06 |
Spark plug for internal combustion engine App 20070228916 - Kunitomo; Iwao ;   et al. | 2007-10-04 |
Spark plug in use for an internal combustion engine Grant 5,831,377 - Matsubara , et al. November 3, 1 | 1998-11-03 |
Multi-polarity type spark plug for use in an internal combustion engine Grant 5,680,002 - Kunitomo , et al. October 21, 1 | 1997-10-21 |
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