Issued Patents 1997
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5643546 | Pitch-type carbon fibers and process for their production | Iwao Yamamoto, Akihiko Yoshiya, Kazuo Shirosaki | 1997-07-01 |
| 5620674 | Carbon fibers and process for their production | Iwao Yamamoto | 1997-04-15 |
| 5612015 | Carbon fibers and process for their production | Iwao Yamamoto | 1997-03-18 |
| 5601794 | Pitch type carbon fibers and process for their production | Iwao Yamamoto, Akihiko Yoshiya, Kazuo Shirosaki | 1997-02-11 |