Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885338 | Modified diene polymer rubbers | Hiroyoshi Takao, Tomoaki Seki | 1989-12-05 |
| 4845173 | Process for producing thermoplastic elastomers | Nobuyuki Yoshida, Tomoaki Seki | 1989-07-04 |
| 4812527 | Rubber composition for tire treads containing dicarboxylic acid diester coupled block polymers | Hiroyoshi Takao, Nabuyuki Yoshida, Mitsuji Tsuji, Yuichi Saito | 1989-03-14 |