Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10777975 | Spark plug | Yoshitomo Iwasaki | 2020-09-15 |
| 10751923 | Spark plug insulator production method, insulator, molding die | Hirokazu Kurono, Toshitaka Honda, Hiroyuki Hazama, Kuniharu Tanaka, Hiroyuki Kawaji | 2020-08-25 |
| 10637212 | Method for manufacturing insulator for spark plug | Hirokazu Kurono, Toshitaka Honda, Hiroyuki Hazama | 2020-04-28 |