Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4861550 | Corrosion-resistant nickel-base alloy having high resistance to stress corrosion cracking | Yoshio Takizawa, Ichiro Sekine | 1989-08-29 |
| 4803512 | Image forming cartridge for providing uniform corona charging | Mitsuru Ogura, Shoichiro Yoshiura | 1989-02-07 |