Issued Patents 2020
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10855057 | Spark plug for internal combustion engine | Ryota Wakasugi, Fumiaki Aoki, Daisuke Tanaka, Akimitsu Sugiura, Kanechiyo Terada | 2020-12-01 |
| 10811850 | Spark plug of internal combustion engine | Yuuki Kawata, Fumiaki Aoki, Daisuke Tanaka, Ryota Wakasugi, Kanechiyo Terada +1 more | 2020-10-20 |
| 10720760 | Spark plug for internal combustion engine | Yuuki Kawata, Fumiaki Aoki, Daisuke Tanaka, Ryota Wakasugi, Akimitsu Sugiura +1 more | 2020-07-21 |
| 10612510 | Ignition apparatus | Keiko Miyake, Shunichi Takeda, Kanechiyo Terada | 2020-04-07 |