Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5202183 | Alkali-resistant synthetic fiber | Yoshihiko Hosako, Takashi Tabuchi, Yasushi Yamaguchi | 1993-04-13 |
| 4902452 | Process for producing an acrylic fiber having high fiber characteristics | Yoshihiro Nishihara, Masaaki Toramaru, Toshiyuki Yasunaga | 1990-02-20 |
| 4831069 | Acrylonitrile spinning solution and process for producing fibers therewith | Teruhiko Sugimori, Yoshinobu Shiraishi, Toshiyuki Yasunaga | 1989-05-16 |