Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4931376 | Crystalline trans-butadiene polymers | Takeshi Ikematsu, Yasuo Hattori, Mitsuhiro Tanaka | 1990-06-05 |
| 4547560 | Random styrene-butadiene copolymer rubber | Yasuo Hattori, Hideo Morita | 1985-10-15 |