Issued Patents All Time
Showing 26–50 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5534188 | Acetylene derivatives, process for producing the same, liquid crystal composition containing the same as an active ingredient, and liquid crystal element using said liquid crystal composition | Takayuki Higashii, Shoji Toda, Naoyuki Takano, Kayoko Ueda, Koichi Fujisawa | 1996-07-09 |
| 5523437 | Tertiary phosphine compound and transition metal complex comprising the same as ligand | Tamio Hayashi, Yasuhiro Uozumi, Kazunori Iwakura, Isao Kurimoto | 1996-06-04 |
| 5498721 | Process for producing thiophene derivatives | Masahiko Mizuno, Isao Kurimoto, Norihiko Hirata, Toshiya Takahashi, Takahiro YAMAMOTO +2 more | 1996-03-12 |
| 5447659 | Optically active benzene derivatives, process for producing the same and liquid-crystalline substances containing said derivatives as active ingredient and optical switching elements | Takayuki Higashii | 1995-09-05 |
| 5422038 | Optically active naphthalene derivative, process for preparation thereof, liquid crystal composition containing the same as effective component, and liquid crystal element using the same | Shoji Toda, Takayuki Higashii, Isao Kurimoto, Chizu Sekine, Takeshi Tani +1 more | 1995-06-06 |
| 5395977 | Process for producing optical active 4-hydroxy-2-cyclopentenone | Fumio Toda, Yorihiko Inoue | 1995-03-07 |
| 5389293 | Optically active benzene derivatives, process for producing the same and liquid-crystalline composition containing said derivatives as liquid-crystalline compound and light switching elements | Takayuki Higashii, Isao Kurimoto, Shoji Toda, Takeshi Tani, Chizu Kawakami +1 more | 1995-02-14 |
| 5385693 | Optically active ester derivatives, preparation process thereof, liquid crystal materials and a light switching element | Takayuki Higashii, Isao Kurimoto, Shoji Toda, Takeshi Tani, Chizu Kawakami +2 more | 1995-01-31 |
| 5374376 | Optically active aromatic compounds, preparation process therefor, liquid crystal materials and a light switching element | Takayuki Higashii, Isao Kurimoto, Shoji Toda, Shigeaki Chika, Koichi Fujisawa +1 more | 1994-12-20 |
| 5338484 | Optically active benzene derivatives, process for producing the same and liquid-crystalline substances containing said derivatives as active ingredient and optical switching elements | Takayuki Higashii | 1994-08-16 |
| 5332675 | Optically active aromatic carboxylic acid derivatives and process for producing the same | Takayuki Higashii | 1994-07-26 |
| 5326871 | Optically active pyrimidine compound, process for producing the same and liquid crystal composition containing the same | Takayuki Higashii, Shoji Toda, Chizu Sekine, Takeshi Tani, Koichi Fujisawa | 1994-07-05 |
| 5274168 | Optically active benzene derivatives, process for producing the same and liquid-crystalline substances containing said derivatives as active ingredient and optical switching elements | Takayuki Higashii | 1993-12-28 |
| 5268501 | Process for preparing haloketo acid derivatives | Takaharu Ikeda, Seiichi Kai | 1993-12-07 |
| 5264151 | Optically active ester derivatives, preparation process thereof, liquid crystal materials and a light switching element | Takayuki Higashi, Isao Kurimoto, Shoji Toda, Takeshi Tani, Chizu Kawakami +2 more | 1993-11-23 |
| 5238598 | Optically active aromatic compounds, preparation process thereof, and liquid crystal compositions and elements | Isao Kurimoto, Takayuki Higashii, Shoji Toda, Chizu Sekine, Takeshi Tani +1 more | 1993-08-24 |
| 5235068 | Process for producing acylaromatic compounds | Michitada Kondo, Yuji Ueda, Seiichi Kai, Takayuki Higashii | 1993-08-10 |
| 5202467 | Process for preparing haloketo acid derivatives | Takaharu Ikeda, Seiichi Kai | 1993-04-13 |
| 5191109 | Process for preparing optically active cyclopentenones | Sachiko Imazu, Seiichi Kai, Takaharu Ikeda, Hideyuki Ikehira | 1993-03-02 |
| 5151542 | Process for preparing di-tert.-butyl dicarbonate | Isao Kurimoto | 1992-09-29 |
| 5124070 | Optically active ester derivatives, preparation process thereof, liquid crystal materials and a light switching element | Takayuki Higashii, Isao Kurimoto, Shoji Toda, Takeshi Tani, Chizu Kawakami +2 more | 1992-06-23 |
| 5041620 | Method for producing optically active 2-cyclopenten-4-one-1-ol esters, 2-cyclopenteno-4-one-1-ol ester and complexes thereof with optically active 1,6-diphenyl-2,4-hexadiyne-1,6-diol | Fumio Toda | 1991-08-20 |
| 5019298 | Optically active aromatic carboxylic acid derivatives and process for producing the same | Takayuki Higashii | 1991-05-28 |
| 5013479 | Optically active ether derivatives, preparation process therefor, liquid crystal materials and an optical switching element | Takayuki Higashii | 1991-05-07 |
| 5002693 | Novel optically active benzene derivatives, process for producing the same and liquid-crystalline substances containing said derivatives as active ingredient and optical switching elements | Takayuki Higashii | 1991-03-26 |