Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4889746 | Process for manufacturing an optical recording medium | Tetsuya Yuasa, Yasuyuki Goto, Iwao Tsugawa, Nagaaki Koshino | 1989-12-26 |
KU
Kenichi Utsumi
Overall (1989): #87,540 of 140,708Top 65%
1
Patents 1989