Issued Patents 2020
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |