Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4342859 | Bis(aminophenylthioalkyl)terephthalate and hardener for polyurethane elastomer thereof | Takao Harada, Hideaki Ohashi, Chihiro Yazawa, Kazuko Nanjo | 1982-08-03 |
| 4327204 | Process for producing polyurethane elastomer by mixing a hardener composition with an isocyanate composition | Yoshijiro Oyaizu, Chihiro Yazawa | 1982-04-27 |