Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6286550 | Valve apparatus | Seiji Yamaki, Kenichi Kawazoe, Hideo Ohtani, Hiroshi Yamamoto, Koji Izumi | 2001-09-11 |
| D421791 | Double-seated control valve plug | Hideo Ohtani, Ryuji Shinozaki | 2000-03-21 |
| D403049 | Double-seated control valve | Hideo Ohtani, Hiroshi Yamamoto, Koji Izumi | 1998-12-22 |
| D403052 | Yoke of valve | Hideo Ohtani, Hiroshi Yamamoto, Koji Izumi | 1998-12-22 |