Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874664 | Birefringent plate and manufacturing method for the same | Shigeki Hamaguchi, Yasuhiro Ohtsuka, Tomoyoshi Motohiro, Masahiko Ishii | 1989-10-17 |
| 4855176 | Anti-blurring optical member | Takeshi Ohwaki | 1989-08-08 |
| 4813768 | Liquid crystal device having an oblique evaporation film which is protected by a protective layer | Shigeki Hamaguchi, Yasuhiro Otsuka, Tomoyashi Motohiro, Tadayoshi Itoh | 1989-03-21 |