Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849228 | Polymer, production and use thereof | Masaki Yamamoto, Hiroaki Okada, Yasuaki Ogawa | 1989-07-18 |
| 4826959 | 2,2'-Azobis(2,4-dimethylvaleronitrile) isomer mixture predominant in low melting isomer and having high solubility | Motoaki Tanaka, Hideo Takeuchi | 1989-05-02 |