Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5229202 | Carbon fiber and carbon fiber-reinforced resin composition using it | Yoshihiro Sakamoto, Yasushi Omata, Manabu Fujiya | 1993-07-20 |
| 4923648 | Process for the production of pitch-type carbon fibers | Ryuichi Hara, Masami Kagizaki, Tsuyoshi Takakura | 1990-05-08 |
| 4818612 | Process for the production of pitch-type carbon fibers | Ryuichi Hara, Masami Kagizaki, Tsuyoshi Takakura | 1989-04-04 |