Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5093204 | Vibration-damping composite sheet steel | Tomeji Doi, Masafumi Yoshida, Hidekazu Tsubone, Norio Chiba, Kunio Kawasaki +3 more | 1992-03-03 |
| 4740427 | Vibration-damping composite metal plate | Masahide Ochiumi, Shinji Horie, Norihiro Sekizuka, Akira Itsubo | 1988-04-26 |