Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE34303 | Metal diaphragm valve | Tadahiro Ohmi, Yohichi Kanno, Kazuhiko Satoh | 1993-07-06 |
| 4953826 | Metal diaphragm valve | Tadahiro Ohmi, Yohichi Kanno, Kazuhiko Satoh | 1990-09-04 |