Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873301 | Optically active, ethylenically unsaturated polymers of amino penicillanic acid compounds | Yasushi Saotome, Takeo Miyazawa | 1989-10-10 |
| 4870193 | Process for producing spiro-orthocarbonate | Hiromu Taguchi, Kiyokazu Mizutani, Hiroyuki Kato | 1989-09-26 |
| 4849529 | Method for production of spiro-orthocarbonate | Kiyokazu Mizutani, Hitoshi Kato, Kuniko Ogasawara | 1989-07-18 |
| 4841058 | Viologen derivative | Yoko Nambu, Kazutoshi Yamamoto | 1989-06-20 |