Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5399203 | Method for cleaning oil-deposited material | Makoto Ishikawa, Tetsuhiro Yamauchi, Kazunari Takahashi, Soichi Orita, Tetsuo Asanuma +2 more | 1995-03-21 |
| 4664426 | Retainer ring for coupling together water supply pipes or the like | — | 1987-05-12 |