Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847132 | Protective layer for optical information recording medium | Masatoshi Takao, Toshimitsu Kurumizawa, Kenichi Nagata | 1989-07-11 |
KK
Kunio Kimura
Overall (1989): #85,560 of 140,708Top 65%
1
Patents 1989