Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4676479 | Flanged valve | Hirotoshi Ogawa | 1987-06-30 |
| 4605202 | Ball valve | Nitiro Sano | 1986-08-12 |
| 4545565 | Diaphragm valve | Nichiro Sano | 1985-10-08 |
| 4458878 | Ball valve assembly | — | 1984-07-10 |
| 4411407 | Ball valve assembly | Youichi Ninomiya | 1983-10-25 |
| 4286622 | Check valve assembly | Youichi Ninomiya | 1981-09-01 |