Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4975263 | Process for producing mesophase pitch-based carbon fibers | Masatoshi Furuyama, Takeshi Hamada, Tadao Tomioka | 1990-12-04 |
| 4775589 | Coaltar pitch based carbon fiber having high Young's modulus | Takeshi Hamada, Tokuhiko Nishida, Mitsuaki Matsumoto | 1988-10-04 |