Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4847132 | Protective layer for optical information recording medium | Kunio Kimura, Toshimitsu Kurumizawa, Kenichi Nagata | 1989-07-11 |
MT
Masatoshi Takao
Overall (1989): #78,532 of 140,708Top 60%
1
Patents 1989