Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11183819 | Spark plug | Yutaka Yokoyama, Nobuyoshi Araki, Kuniharu Tanaka, Haruki Yoshida, Hironori Uegaki +1 more | 2021-11-23 |
| 10586627 | Spark plug | Haruki Yoshida, Kuniharu Tanaka, Shun Kondo, Yutaka Yokoyama, Michitaka Yamada | 2020-03-10 |
| 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 |
| 9653888 | Spark plug | Yutaka Yokoyama, Kuniharu Tanaka, Katsuya Takaoka, Shun Kondo, Nobuyoshi Araki +6 more | 2017-05-16 |