Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5106578 | Cast-to-near-net-shape steel body of heat-resistant cast steel | Kouki Ohtsuka, Kimio Kubo, Koichi Akiyama, Kunio Kawai | 1992-04-21 |
| 5091147 | Heat-resistant cast steels | Kouki Ohtsuka, Kimio Kubo, Koichi Akiyama, Kunio Kawai | 1992-02-25 |
| 4924967 | Exhaust manifold | Kunio Kawai | 1990-05-15 |
| 4773947 | Manufacturing process for high temperature carburized case harden steel | Kimihiro Shibata, Kenji Isokawa, Katsunori Takada | 1988-09-27 |
| 4509353 | Method of and apparatus for forming gears | Masashi Arita | 1985-04-09 |