Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5702798 | Composite material with controlled elasticity | Yukio Sugita, Sadayuki Ishiyama, Jun Yamada | 1997-12-30 |
| 5642646 | Method for manufacturing rotary cutting tool and rotary cutting tool | — | 1997-07-01 |