Issued Patents All Time
Showing 1–25 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11465314 | Method of producing insulator for spark plug | — | 2022-10-11 |
| 11374385 | Spark plug, noble metal tip, and manufacturing method for noble metal tip | Hiroshi Nakao | 2022-06-28 |
| 11056858 | Spark plug having a housing with a channel part | Yoshihiro Izumi, Kanechiyo Terada, Tetsuya Miwa | 2021-07-06 |
| 11005238 | Spark plug | — | 2021-05-11 |
| 10938186 | Spark plug electrode and spark plug | Ryohei Akiyoshi, Ken Hanashi | 2021-03-02 |
| 10938184 | Spark plug | Yuuki Kawata, Kanechiyo Terada, Tetsuya Miwa | 2021-03-02 |
| 10931086 | Spark plug including a ground electrode having slanted surfaces and a facing portion facing a distal end surface of a center electrode | Daisuke Shimamoto, Yuya Abe | 2021-02-23 |
| 10886709 | Spark plug that prevents gas turbulence in the discharge space | Yuya Abe | 2021-01-05 |
| 10790640 | Spark plug for internal combustion engine | — | 2020-09-29 |
| 10777974 | Spark plug for internal combustion engine that makes re-discharge less prone to occur | Noriaki Nishio, Kanechiyo Terada, Ken Hanashi, Ryohei Akiyoshi, Fumiaki Aoki | 2020-09-15 |
| 10686299 | Spark plug of internal combustion engine | Yasuomi Imanaka | 2020-06-16 |
| 10666022 | Ignition plug and method for manufacturing ignition plug | — | 2020-05-26 |
| 10505347 | Spark plug for internal combustion engine | Ryohei Akiyoshi | 2019-12-10 |
| 10439367 | Ignition plug for an internal combustion engine and method for manufacturing the same | Masayuki Tamura, Nobuo Abe | 2019-10-08 |
| 10333281 | Spark plug | Kazumi Nakano | 2019-06-25 |
| 10305258 | Ignition coil for internal combustion engine | Kenji Hattori, Kaori Doi, Tetsuya Miwa | 2019-05-28 |
| 9972977 | Spark plug for internal combustion engine | Aki Miyawaki, Atsushi Honda, Syoichi Takemoto, Akihiro Ando, Takanobu Aochi | 2018-05-15 |
| 9954344 | Spark plug for internal combustion engine | Kenji Hattori, Toshiya Nakamura, Yasuomi Imanaka, Hirofumi Suzuki, Hiroshi Araki +2 more | 2018-04-24 |
| 9948067 | Spark plug | Ryuichi Ohno, Kenji Hattori | 2018-04-17 |
| 9793687 | Spark plug for internal combustion engine, having an annular ground electrode facing an outer circumference of a center electrode | Masataka Deguchi, Kanechiyo Terada, Tetsuya Miwa, Hironori Osamura, Yuuki Tsukamoto | 2017-10-17 |
| 9702332 | Ignition device | Koichi Hattori, Atsuya Mizutani | 2017-07-11 |
| 9660424 | Spark plug | Kaori Doi, Yuuto Tamei | 2017-05-23 |
| 9488151 | Ignition system | Atsuya Mizutani, Koichi Hattori, Yasuomi Imanaka | 2016-11-08 |
| 9385510 | Spark plug for internal combustion engine and method of manufacturing spark plug | Masataka Deguchi, Hironori Osamura, Kanechiyo Terada, Junichi Wada, Yuuki Tsukamoto | 2016-07-05 |
| 9377001 | Spark plug for internal combustion engine | Takanobu Aochi, Kaori Doi, Noriaki Nishio | 2016-06-28 |