Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10424901 | Spark plug | Seiji Nakano, Hirokazu Kurono, Kuniharu Tanaka, Yutaka Yokoyama, Haruki Yoshida +1 more | 2019-09-24 |
| 10193311 | Spark plug | Yutaka Yokoyama, Kuniharu Tanaka, Nobuyoshi Araki, Hirokazu Kurono, Toshimasa Saji +1 more | 2019-01-29 |
| 9912125 | Spark plug | Haruki Yoshida, Toshitaka Honda, Yutaka Yokoyama, Kuniharu Tanaka, Nobuyoshi Araki +1 more | 2018-03-06 |
| 9755404 | Spark plug | Haruki Yoshida, Yutaka Yokoyama, Kuniharu Tanaka, Nobuyoshi Araki, Toshiki Kon | 2017-09-05 |
| 9653888 | Spark plug | Yutaka Yokoyama, Kuniharu Tanaka, Katsuya Takaoka, Shun Kondo, Nobuyoshi Araki +6 more | 2017-05-16 |