Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4923648 | Process for the production of pitch-type carbon fibers | Ryuichi Hara, Tsuyoshi Takakura, Shigeki Tomono | 1990-05-08 |
| 4818612 | Process for the production of pitch-type carbon fibers | Ryuichi Hara, Tsuyoshi Takakura, Shigeki Tomono | 1989-04-04 |