Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6467999 | Internal pressure regulating system for flexible bag body, flexible membrane dam using the same, and method for regulating internal pressure in the flexible membrane dam | Tateo Muramatsu, Masaru Kaneko | 2002-10-22 |
| 6179521 | Flexible membrane mounting metal fitting and flexible membrane inflating structural body | Tateo Muramatsu, Yoshihiro Sato, Shoji Naito | 2001-01-30 |
| 5067851 | Collapsible sheet dam | Masao Fujisawa, Mamoru Takasaki, Yoshihiro Sato | 1991-11-26 |
| 4601611 | Marine fender | Hisaya Uruta | 1986-07-22 |