Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818612 | Process for the production of pitch-type carbon fibers | Ryuichi Hara, Masami Kagizaki, Tsuyoshi Takakura | 1989-04-04 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4818612 | Process for the production of pitch-type carbon fibers | Ryuichi Hara, Masami Kagizaki, Tsuyoshi Takakura | 1989-04-04 |