Issued Patents All Time
Showing 1–21 of 21 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10044173 | Method of manufacturing spark plug | — | 2018-08-07 |
| 9496687 | Method for manufacturing spark plug | Keiji Ozeki, Tomoaki Kato | 2016-11-15 |
| 9455553 | Spark plug | Takuya Shimamura | 2016-09-27 |
| 9270088 | Method for inspecting spark plug and method for manufacturing spark plug | — | 2016-02-23 |
| 9166376 | Spark plug | — | 2015-10-20 |
| 9160148 | Method of manufacturing spark plug | — | 2015-10-13 |
| 8939808 | Method and device for manufacturing spark plug | Keiji Ozeki, Tomoaki Kato, Akiko Maruno | 2015-01-27 |
| 8729785 | Spark plug | Takuya Shimamura | 2014-05-20 |
| 8674592 | Spark plug having a crimp portion in the metal shell to firmly engage with the ceramic insulator | Mai Nakamura, Tomoaki Kato | 2014-03-18 |
| 8664843 | Spark plug | Yuichi Yamada, Hiroaki Kuki, Naomichi Miyashita | 2014-03-04 |
| 8636555 | Manufacturing apparatus and manufacturing method for spark plugs | Keisuke Kure | 2014-01-28 |
| 8633640 | Spark plug | Akira Suzuki, Mamoru Musasa | 2014-01-21 |
| 8624475 | Spark plug | Takuya Shimamura, Tomoaki Kato, Naomichi Miyashita | 2014-01-07 |
| 8624474 | Spark plug | Akira Suzuki | 2014-01-07 |
| 8531094 | Spark plug having self-cleaning of carbon deposits | Akira Suzuki, Tomoaki Kato, Mamoru Musasa | 2013-09-10 |
| 8253311 | Spark plug | Kenji Ban, Akira Suzuki | 2012-08-28 |
| 8115371 | Spark plug | Akira Suzuki, Kenji Ban | 2012-02-14 |
| 8102105 | Spark plug | Kenji Ban, Akira Suzuki | 2012-01-24 |
| 7944134 | Spark plug with center electrode having high heat dissipation property | Akira Suzuki, Mai Moribe, Yuichi Nakano, Mamoru Musasa | 2011-05-17 |
| 7710006 | Spark plug | Toshitaka Honda | 2010-05-04 |
| 7477006 | Spark plug for internal combustion engine and method of manufacturing the same | Reimon Fukuzawa | 2009-01-13 |