Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11773473 | Heat-resistant IR alloy | Shunsuke Yokota, Yoshinori Doi, Ken Hanashi | 2023-10-03 |
| 11505848 | Heat-resistant Ir alloy | Shunsuke Yokota, Kenta Terai, Hayato Yasuhara, Ken Hanashi, Ikuya Ando | 2022-11-22 |
| 11486024 | Heat-resistant Ir alloy wire | Shunsuke Yokota, Kenta Terai, Hayato Yasuhara, Ken Hanashi, Ikuya Ando | 2022-11-01 |
| 11131008 | Heat-resistant Ir alloy | Shunsuke Yokota, Yoshinori Doi, Ken Hanashi | 2021-09-28 |
| 10938186 | Spark plug electrode and spark plug | Ken Hanashi, Masamichi Shibata | 2021-03-02 |
| 10777974 | Spark plug for internal combustion engine that makes re-discharge less prone to occur | Noriaki Nishio, Masamichi Shibata, Kanechiyo Terada, Ken Hanashi, Fumiaki Aoki | 2020-09-15 |
| 10693280 | Spark plug | — | 2020-06-23 |
| 10505347 | Spark plug for internal combustion engine | Masamichi Shibata | 2019-12-10 |
| 10431960 | Spark plug for internal combustion engine | Ryuichi Ohno | 2019-10-01 |
| 10348060 | Spark plug | Tomoyuki Watanabe, Ryuichi Ohno | 2019-07-09 |
| 10050417 | Spark plug and manufacturing method thereof | Ken Hanashi, Tomoyuki Watanabe | 2018-08-14 |
| 9935429 | Ignition control system | Ken Hanashi, Tomoyuki Watanabe | 2018-04-03 |
| 9847622 | Spark plug for an internal combustion engine | Hidekazu Fujimoto | 2017-12-19 |