Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11264003 | Soundproof member | Koji Tomiyama, Akio Yabu, Yuhei Adachi, Yasuo Suzuki | 2022-03-01 |
| 10486621 | Soundproof cover | Koji Tomiyama, Akio Yabu, Yuhei Adachi, Yasuo Suzuki, Yasuhiko Maekawa | 2019-11-26 |