Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11636838 | Soundproof member | Kei Yoshikawa, Koji Tomiyama, Yasuo Suzuki | 2023-04-25 |
| 11264003 | Soundproof member | Koji Tomiyama, Shuka Kitamura, Yuhei Adachi, Yasuo Suzuki | 2022-03-01 |
| 10486621 | Soundproof cover | Koji Tomiyama, Shuka Kitamura, Yuhei Adachi, Yasuo Suzuki, Yasuhiko Maekawa | 2019-11-26 |
| 9551144 | Sound absorbing cover, sound absorbing assembly, and magnetic induction foam molding device | Koji Tomiyama, Ryosuke Kutsuna | 2017-01-24 |
| 9267565 | Vibrating member attachment structure | Koji Tomiyama | 2016-02-23 |