Issued Patents All Time
Showing 1–8 of 8 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 |
| 4267317 | Process for producing phenoxyalkene derivative | Tadashi Sasuga, Chihiro Yazawa | 1981-05-12 |
| 4254262 | Process for producing phenoxycarboxylic acid derivative | Tadashi Sasuga, Chihiro Yazawa | 1981-03-03 |
| 4246425 | 4-Chloro-3,5-diaminophenyl acetates and curing agent | Masami Takayama, Hideaki Ohashi, Chihiro Yazawa | 1981-01-20 |
| 4246392 | Method for the preparation of polyurethane elastomers based on polyethyleneglycol-bis(4-aminobenzoates) | Masami Takayama, Hideaki Ohashi, Chihiro Yazawa | 1981-01-20 |
| 4211723 | Process for producing chlorosulfonylbenzoylchloride | Takahiro Kimoto, Sadayoshi Matsui | 1980-07-08 |
| 4195037 | 4-Alkoxy-3,5-diamino-.alpha.,.alpha.,.alpha.-trifluoromethyl-benzene and manufacture thereof and hardener for polyurethane elastomer thereof | Takao Harada, Nobuhide Wada, Hideaki Ohashi, Chihiro Yazawa | 1980-03-25 |