Issued Patents 2020
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10879675 | Spark plug | Haruki Yoshida, Yutaka Yokoyama, Shun Kondo, Hirokazu Kurono, Toshimasa Saji | 2020-12-29 |
| 10751923 | Spark plug insulator production method, insulator, molding die | Hirokazu Kurono, Hironori Uegaki, Toshitaka Honda, Hiroyuki Hazama, Hiroyuki Kawaji | 2020-08-25 |
| 10586627 | Spark plug | Haruki Yoshida, Shun Kondo, Yutaka Yokoyama, Yusuke Nomura, Michitaka Yamada | 2020-03-10 |