Issued Patents 1989
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877862 | Solid state polymerization process for increasing the molecular weight of colpoly(arylene sulfide) | Joseph J. Watkins | 1989-10-31 |
| 4877851 | Blends of copoly(arylene sulfide) and poly(arylene sulfide) | Joseph J. Watkins, Paul B. Lawrence | 1989-10-31 |
| 4859762 | Process for the preparation of copoly(arylene sulfide) | Mark Rule, Joseph J. Watkins | 1989-08-22 |
| 4857629 | Process for the preparation of copoly(arylene sulfide) | Mark Rule, Joseph J. Watkins | 1989-08-15 |
| 4855393 | Process for the preparation of copoly(arylene sulfide) | Mark Rule, Joseph J. Watkins, Jerry Steven Fauver | 1989-08-08 |
| 4849499 | Melt processable, liquid crystalline polyesters | Winston J. Jackson, Jr., Mary Martin | 1989-07-18 |
| 4826956 | Process for the preparation of copoly(arylene sulfide) using an oxygen-containing gas | Joseph J. Watkins, Paul B. Lawrence, Mark Rule | 1989-05-02 |