Issued Patents 1982
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4342670 | Process for preparing rubber compositions for tire treads | Makoto Misawa, Hiroshi Hirakawa | 1982-08-03 |
| 4323485 | Rubber compositions for tire treads having low rolling resistance | Makoto Misawa, Kazuo Miyasaka, Hiroshi Hirakawa | 1982-04-06 |
| 4321168 | Process for preparing rubber composition for tire treads | Akio Ueda, Shuichi Akita, Hiroshi Hirakawa | 1982-03-23 |
| 4309318 | Tread compositions for tires having low rolling resistance | Makoto Misawa, Hiroshi Hirakawa, Kazuo Miyasaka | 1982-01-05 |