Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5294271 | Heat treatment for manufacturing spring steel excellent in high-temperature relaxation resistance | Tsunetoshi Suzaki, Teruo Tanaka, Toshiro Yamada | 1994-03-15 |
| 4873149 | Vibration-damper metal sheets | Kenichi Shinoda, Tomoaki Isayama, Yuichi Higo | 1989-10-10 |