Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5211879 | Ester compounds and liquid crystal compositions containing the same | Isa Nishiyama, Atsushi Yoshizawa, Toshihiro Hirai | 1993-05-18 |
| 5137653 | Alkanoyl ester compounds and their intermediates and method of producing the same | Toshihiro Hirai, Atsushi Yoshizawa, Isa Nishiyama, Mitsuo Fukumasa, Akihisa Yokoyama | 1992-08-11 |
| 5098602 | Novel halogen-containing ester compounds, and their intermediates, and method of producing the same as well as liquid crystal compositions containing the same and light switching elements | Toshihiro Hirai, Atsushi Yoshizawa, Isa Nishiyama, Mitsuo Fukumasa, Akihisa Yokoyama | 1992-03-24 |
| 4970023 | Biphenyl compounds, method of producing the same as well as liquid crystal compositions and light switch elements each containing the same | Toshihiro Hirai, Atsushi Yoshizawa, Isa Nishiyama, Mitsuo Fukumasa, Akihisa Yokoyama | 1990-11-13 |