Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836864 | Method of gas carburizing and hardening | Koji Murakami, Tsunao Shima, Yoshikazu Shimosato | 1989-06-06 |
| 4814365 | Curable resin composition | Eiichiro Takiyama, Ryushi Ogura | 1989-03-21 |
| 4807853 | Continuous furnace for gas carburizing and hardening | Koji Murakami, Tsunao Shima, Yoshikazu Shimosato | 1989-02-28 |