Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5127766 | Apparatus and method for controlling the inner pressure of an air bag in an air inflation/deflation weir made of flexible film | Yoshiomi Tsuji, Ichiro Maruyama | 1992-07-07 |
| 4728221 | Flexible membrane dam | Yoshiomi Tsuji, Ichiro Maruyama | 1988-03-01 |