Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4840705 | Papermaking method | Hisao Ikeda, Fumio Suzuki, Yoshitane Watanabe, Mitsunobu Matsumura, Hirosi Murakami +1 more | 1989-06-20 |
| 4837344 | Optically active bicyclo carboxylic acids and their derivatives | Katsuaki Miyaji, Kazutaka Arai, Yoshio Ohara | 1989-06-06 |