Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6808811 | Protecting film for polarizing plate and polarizing plate | Takahiko Sawada, Hitoshi Kobayashi | 2004-10-26 |
| 6552145 | Polarizer protection film | Hitoshi Kobayashi, Shoji Nozato, Takahiko Sawada, Kazuaki Hiratani, Toshihiro Otsuki | 2003-04-22 |
| 4419789 | Torsion hinge | Tatsuhiko Matsui, Minoru Shimatsu | 1983-12-13 |
| 4346925 | Handle device of lid opener mechanism | — | 1982-08-31 |