Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4857267 | Aluminum base bearing alloy and method of producing same | Yoshihiro Maki, Akira Matsuyama, Katsuji Tanizaki, Noboru Okabe, Takeshi Sakai +2 more | 1989-08-15 |
| 4396822 | Welding wire for automatic arc welding | Sumio Hirao, Hirohiko Date | 1983-08-02 |
| 4394560 | Covered electrode containing zirconium for shielded metal arc welding | Yutaka Mekuchi, Sumio Hirao, Hirohiko Date | 1983-07-19 |