Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4759839 | Process for producing pitch useful as raw material for carbon fibers | Seiji Ishikawa, Yukio Matsumoto, Tutomu Kaibara, Kenji Sugiyama, Takuo Morishige | 1988-07-26 |