Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863708 | Process for producing carbon fibers and the carbon fibers produced by the process | Ikuo Seo, Yasuo Sakaguchi | 1989-09-05 |
| 4826906 | Poly(arylene thioether-ketone) compositions improved in both melt stability and crystallinity | Yoshikatsu Satake, Yo Iizuka, Toshitaka Kouyama, Takayuki Katto, Zenya Shiiki | 1989-05-02 |