Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886904 | Polyprenyl composition or compounds and process for the production thereof | Koichi Ibata, Masao Mizuno, Yoichi Ninagawa, Takashi Nishida | 1989-12-12 |
| 4820878 | Tolan-type nematic liquid crystalline compounds | Haruyoshi Takatsu, Makoto Sasaki, Hisato Sato | 1989-04-11 |
| 4814523 | Nematic liquid crystal compound of four ring systems | Haruyoshi Takatsu, Kiyohumi Takeuchi, Yuji Tamura | 1989-03-21 |