Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11183819 | Spark plug | Yutaka Yokoyama, Nobuyoshi Araki, Kuniharu Tanaka, Hironori Uegaki, Toshiki Kon +1 more | 2021-11-23 |
| 11146041 | Spark plug that has an insulator less likely to be damaged | Hiroki Shimada, Naoya Harata | 2021-10-12 |
| 10973090 | Induction heating power supply apparatus | Takahiko Kanai, Masato Sugimoto | 2021-04-06 |
| 10897795 | Induction heating power supply apparatus | Takahiko Kanai, Masato Sugimoto | 2021-01-19 |