Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882416 | Preparation of poly arylene sulfide with specified ratio of sulfur source to cyclic organic amide | Wei Shang, Kenneth D. Goetz | 1989-11-21 |
| 4882418 | Washing arylene sulfide polymers with water plus a reducing agent | Afif M. Nesheiwat, Fred T. Sherk | 1989-11-21 |
| 4820800 | Arylene sulfide polymers | Jon F. Geibel | 1989-04-11 |
| 4801664 | Acid wash of polyarylene sulfides | Afif M. Nesheiwat, Fred T. Sherk | 1989-01-31 |