Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6105933 | Diaphragm valve structure | Osamu Uchisawa, Jun Yamashima | 2000-08-22 |
| 5827949 | Method and system for measuring external leakage | Tadihiro Ohmi, Atsushi Ohki | 1998-10-27 |
| 5551477 | Diaphragm-type flow control valve and manual control valve apparatus | Osamu Uchisawa, Sigekazu Yamazaki | 1996-09-03 |
| 5516366 | Supply control system for semiconductor process gasses | Osamu Uchisawa, Kohichi Murakami, Tadahiro Ohmi | 1996-05-14 |
| RE34303 | Metal diaphragm valve | Tadahiro Ohmi, Kazuhiko Satoh, Tadahiro Hatayama | 1993-07-06 |
| 4953826 | Metal diaphragm valve | Tadahiro Ohmi, Kazuhiko Satoh, Tadahiro Hatayama | 1990-09-04 |
| 4828219 | Metal diaphragm valve | Tadahiro Ohmi, Osamu Uchisawa, Kazuhiko Sato | 1989-05-09 |