Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4960262 | Ball valve and methods of fabrication | Shinji Takeda | 1990-10-02 |
| 4883253 | Ball valve and methods of fabrication | Shinji Takeda | 1989-11-28 |
| 4869450 | Ball valve | Shinji Takeda | 1989-09-26 |
| 4813649 | Ball valve | Shinji Takeda | 1989-03-21 |
| D297254 | Ball valve | Masayoshi Odate | 1988-08-16 |