Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874664 | Birefringent plate and manufacturing method for the same | Yasuhiro Ohtsuka, Tomoyoshi Motohiro, Yasunori Taga, Masahiko Ishii | 1989-10-17 |
| 4863859 | Process for preparing optically active glycerol derivatives | Takehisa Ohashi, Kiyoshi Watanabe | 1989-09-05 |
| 4813768 | Liquid crystal device having an oblique evaporation film which is protected by a protective layer | Yasuhiro Otsuka, Yasunori Taga, Tomoyashi Motohiro, Tadayoshi Itoh | 1989-03-21 |
| 4814506 | Process for preparing 3 halogeno-2-hydroxypropyltrimethylammonium halide | Kazuhiko Katayama, Yoshikazu Kogame, Takehisa Ohashi, Kiyoshi Watanabe | 1989-03-21 |