Issued Patents 2019
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10348061 | Spark plug | Hideto Yamada, Haruki Yoshida, Kuniharu Tanaka, Michitaka Yamada | 2019-07-09 |
| 10305260 | Spark plug including an insulator with a front end portion having first and second sections | Haruki Yoshida, Kuniharu Tanaka, Toshinori Takeichi, Michitaka Yamada | 2019-05-28 |
| 10193311 | Spark plug | Yutaka Yokoyama, Kuniharu Tanaka, Nobuyoshi Araki, Hirokazu Kurono, Toshimasa Saji +1 more | 2019-01-29 |