Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4676479 | Flanged valve | Kazuhiko Tsuno | 1987-06-30 |
| 4616804 | Gate valve | Nichiro Sano | 1986-10-14 |
| 4592534 | Valve assembly | Tomoyuki Ueda | 1986-06-03 |
| 4266754 | Butterfly valve assembly | Youichi Ninomiya, Tomoyuki Ueda, Masataka Machida | 1981-05-12 |