Issued Patents 2021
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11199170 | Ignition control device | Ippei Funato, Akimitsu Sugiura | 2021-12-14 |
| 11125201 | Ignition control system for internal combustion engine | Tetsuya Miwa | 2021-09-21 |
| 11067051 | Ignition device of internal combustion engine | — | 2021-07-20 |
| 11056858 | Spark plug having a housing with a channel part | Yoshihiro Izumi, Masamichi Shibata, Tetsuya Miwa | 2021-07-06 |
| 10989161 | Ignition device | Takashi Ohno, Keiko Miyake, Yasuo Kakumae | 2021-04-27 |
| 10938184 | Spark plug | Yuuki Kawata, Masamichi Shibata, Tetsuya Miwa | 2021-03-02 |
| 10883468 | Ignition system | Takashi Ohno, Keiko Miyake | 2021-01-05 |
| 10886708 | Spark plug for internal combustion engine | Shintaro Itoh, Daisuke Tanaka, Akimitsu Sugiura, Ryota Wakasugi, Kaori Doi +2 more | 2021-01-05 |