Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5137653 | Alkanoyl ester compounds and their intermediates and method of producing the same | Toshihiro Hirai, Atsushi Yoshizawa, Isa Nishiyama, Nobuyuki Shiratori, 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, Nobuyuki Shiratori, 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, Nobuyuki Shiratori, Akihisa Yokoyama | 1990-11-13 |