Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835442 | Lamp for generating ultraviolet radiation | Takahiro Sugimoto, Hiroki Sasaki, Youichiro Mitsuyuki | 1989-05-30 |
| 4800321 | High pressure sodium lamp | Yujiro Ike, Shinichi Ooshima, Akihiro Kamiya, Yoshio Hirose | 1989-01-24 |