Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11476644 | Spark plug | Shunsuke Tsuga | 2022-10-18 |
| 10256610 | Spark plug | Tsutomu Kobayashi | 2019-04-09 |
| 10027093 | Spark plug | Tsutomu Kobayashi | 2018-07-17 |
| 10008834 | Method for manufacturing spark plug | Junji Kimura | 2018-06-26 |
| 9660423 | Spark plug having an electrode structure that effectively suppresses flashover | — | 2017-05-23 |
| 9620935 | Spark plug | Tsutomu Kobayashi | 2017-04-11 |
| 9496687 | Method for manufacturing spark plug | Jiro Kyuno, Tomoaki Kato | 2016-11-15 |
| 9306375 | Spark plug | Tomoaki Kato, Naoyuki Mukoyama | 2016-04-05 |
| 9276383 | Spark plug, and production method therefor | Tomoaki Kato, Naoyuki Mukoyama, Tsutomu Kobayashi | 2016-03-01 |
| 9225150 | Spark plug | Masahiro Nishida, Tomoaki Kato, Naoyuki Mukouyama, Tsutomu Kobayashi | 2015-12-29 |
| 8939808 | Method and device for manufacturing spark plug | Jiro Kyuno, Tomoaki Kato, Akiko Maruno | 2015-01-27 |
| 8791627 | Spark plug configured to reduce the occurance of flashover | Naoyuki Mukoyama | 2014-07-29 |
| 7272970 | Spark plug having combustion pressure detecting function | Koji Okazaki | 2007-09-25 |
| 7185621 | Glow plug with combustion pressure detecting function | Tatsunori Yamada, Yuichi Yamada, Koji Okazaki, Masayoshi Matsui, Takahiro Suzuki | 2007-03-06 |