Issued Patents All Time
Showing 26–35 of 35 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4808507 | Electrophotographic photoreceptor 2-Phenyl-benzooxazole bisazo based | Yasuyuki Yamada, Hisato Itoh, Akihiro Yamaguchi | 1989-02-28 |
| 4734218 | Dichroic azo dyestuffs and liquid crystal composition containing said dyestuffs | Keisuke Takuma, Kimitoshi Kato, Hiroshi Aiga, Yasuyuki Yamada | 1988-03-29 |
| 4555355 | Composition for liquid crystal color display | Yasuyuki Yamada, Tadaaki Tanaka, Ryoichi Tukahara | 1985-11-26 |
| 4552684 | Dichroic dye and liquid crystalline composition for color display | Yasuyuki Yamada, Tamio Mikoda, Tooru Miyahara, Masaharu Kikutsugi | 1985-11-12 |
| 4536320 | Nematic liquid crystalline composition | Ryoichi Tukahara, Ryoichi Morinaka, Tuneo Hidaka | 1985-08-20 |
| 4473486 | Composition for liquid crystal color display elements | Ryoichi Morinaka, Ryoichi Tukahara, Tuneo Hidaka | 1984-09-25 |
| 4459218 | Composition for liquid crystal color display | Yasuyuki Yamada, Tadaaki Tanaka, Ryoichi Tukahara | 1984-07-10 |
| 4360447 | Composition for liquid crystal color display elements | Ryoichi Morinaka, Ryoichi Tukahara, Tuneo Hidaka | 1982-11-23 |
| 4304683 | Composition for liquid crystal color display element | Ryoichi Morinaka, Ryoichi Tukahara, Tuneo Hidaka | 1981-12-08 |
| 4302396 | Chlorinated 4-methylphthalic anhydrides | Michihiro Tsujimoto, Kiyoharu Hasegawa, Nobuyoshi Abe | 1981-11-24 |