Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12384307 | Sound-absorbing cover | Koji Tomiyama, Kazuyoshi Onishi, Kazuto Tanaka, Yasuo Suzuki, Hiroki Taguchi | 2025-08-12 |
| 11264003 | Soundproof member | Koji Tomiyama, Shuka Kitamura, Akio Yabu, Yasuo Suzuki | 2022-03-01 |
| 10486621 | Soundproof cover | Koji Tomiyama, Shuka Kitamura, Akio Yabu, Yasuo Suzuki, Yasuhiko Maekawa | 2019-11-26 |