Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5550676 | Surface light source element | Issei Chiba | 1996-08-27 |
| 4775222 | Light diffusing device | — | 1988-10-04 |
| 4729068 | Light diffusing device | — | 1988-03-01 |
| 4729067 | Light diffusing device | — | 1988-03-01 |
| 4648690 | Light diffusing device | — | 1987-03-10 |
| 4581268 | Polymer article surface-protecting acrylic film for use in carrying out said process | Koichiro Sugi | 1986-04-08 |
| 4477303 | Process for preparation of surface-protecting acrylic film | Koichiro Sugi | 1984-10-16 |