Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10120015 | Method for inspecting insulator for spark plug | Yoshiaki Hashiguchi, Shou Nakama | 2018-11-06 |
| 8672722 | Spark plug manufacturing method | Hirokazu Kurono, Toshitaka Honda | 2014-03-18 |