Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4931233 | Method for adding additives during manufacture of carbon fiber | Hiroyuki Nakamura, Takashi Ohsaki | 1990-06-05 |
| 4925604 | Process for preparing a carbon fiber of high strength | Takashi Ohsaki, Koichi Imai | 1990-05-15 |