Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4967999 | Flow passage coupling unit | Noboru Otsuki, Toshihiko Oonishi, Katsumi Tomioka | 1990-11-06 |
| 4962881 | Flow passage coupling unit | Noboru Otsuki, Toshihiko Oonishi, Katsumi Tomioka | 1990-10-16 |