Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5698137 | Optically active dihydropyran derivative, and liquid crystal composition, liquid crystal device, and racemic mixture comprising the derivative | Tatsushi Ishizuka, Mitsunori Takeda, Keizou Itoh | 1997-12-16 |
| 5595684 | Optically active tetrahydropyran derivative, liquid crystal composition, and liquid crystal device containing the same | Keizou Itoh, Shinichi Nayuki, Mitsunori Takeda, Yoshinobu Murayama | 1997-01-21 |