Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4783041 | Mold for molding optical disc | Yoshihiko Yuzawa, Fumio Iriko, Fumio Kagawa | 1988-11-08 |
| 4307147 | Highly thermal conductive and electrical insulating substrate | Naoaki Ohishi, Mitsuru Hasegawa, Iwao Hiramatsu | 1981-12-22 |
| 4193768 | Method for preparing corundum particles | Naoaki Ohishi, Mitsuru Hasegawa | 1980-03-18 |