Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4823577 | Method of feeding material to hot forging machine | Yoshio Kawashima, Masaaki Yokoyama, Masato Tomiku, Tsuneo Yamada, Tsutomu Kuno +5 more | 1989-04-25 |
| 4761980 | Method of feeding material to hot forging machine | Yoshio Kawashima, Masaaki Yokoyama, Masato Tomiku, Tsuneo Yamada, Tsutomu Kuno +5 more | 1988-08-09 |
| 4665416 | Semiconductor device having a protection breakdown diode on a semi-insulative substrate | Masahiro Hagio, Shutaro Nanbu, Kunihiko Kanazawa, Shiro Tohmori | 1987-05-12 |
| 4192662 | Process for liquefying and rectifying air | Yohei Yamamoto | 1980-03-11 |