Issued Patents 2017
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9853423 | Spark plug | Takuto Nakada, Tsutomu Shibata, Takaaki Kikai | 2017-12-26 |
| 9705292 | Spark plug and method for producing the same | Tatsuya Gozawa, Tsutomu Shibata | 2017-07-11 |
| 9627857 | Spark plug | Tomonori Kanemaru | 2017-04-18 |
| 9548593 | Spark plug | Tomonori Kanemaru, Osamu Yoshimoto | 2017-01-17 |