Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5370856 | High strength carbon fiber and pre-carbonized fiber | Yutaka Arai, Masatoshi Furuyama, Tadao Tomioka | 1994-12-06 |
| 5037589 | Method of producing mesophase pitch type carbon fibers and nozzle for spinning same | Teruo Iwashita, Yutaka Arai, Tadao Tomioka | 1991-08-06 |
| 4631181 | Process for producing mesophase pitch | Mitsuaki Matsumoto, Masatosi Furuyama, Tadao Tomioka, Masakazu Higuchi | 1986-12-23 |