Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6148631 | Silencer and air conditioner | Masahito Watanabe, Yoshimasa Katsumi, Yasuki Fujii, Shotaro Ito, Yasuhiro Asaida | 2000-11-21 |
| 5744081 | Building material manufacturing method | Kazuhiko Mitoma, Shusuke Matsumura | 1998-04-28 |