Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8928212 | Spark plug | Tatsunori Yamada, Tomokatsu Kashima, Katsutoshi Nakayama | 2015-01-06 |
| 8912714 | Spark plug | Akira Suzuki | 2014-12-16 |
| 8912715 | Spark plug | — | 2014-12-16 |
| 8853930 | Ignition plug and method of manufacturing the same | Tatsunori Yamada, Naofumi Yamamura | 2014-10-07 |
| 8841826 | Spark plug | Yuji Kasuya | 2014-09-23 |
| 8531095 | Spark plug comprising enhanced contamination-resisting and heat-resisting properties | Akira Suzuki | 2013-09-10 |
| 8253311 | Spark plug | Akira Suzuki, Jiro Kyuno | 2012-08-28 |
| 8115371 | Spark plug | Jiro Kyuno, Akira Suzuki | 2012-02-14 |
| 8102105 | Spark plug | Jiro Kyuno, Akira Suzuki | 2012-01-24 |