Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5405695 | Poly(phenylene Sulfide) fibers and production process thereof | Masamichi Akatsu, Hiroyuki Endo, Keiji Sonoda | 1995-04-11 |
| 5178813 | Method of producing poly(phenylene sulfide) fibers | Masamichi Akatsu, Hiroyuki Endo, Keiji Sonoda | 1993-01-12 |