Issued Patents All Time
Showing 1–25 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5905137 | Process for preparing sulfur-containing polymers | Michael Haubs, Reinhard Wagener | 1999-05-18 |
| 5328981 | Recovery of poly(arylene sulfide ketone) and poly(arylene sulfide diketone) resins | Jon F. Geibel | 1994-07-12 |
| 5314972 | Acid wash of polyarylene sulfides | John F. Geibel | 1994-05-24 |
| 5171831 | Producing high molecular weight poly(arylene sulfide) polymers by adding second polar solvent prior to termination of polymerization | Kenneth C. Hoover | 1992-12-15 |
| 5134224 | Aromatic sulfide/sulfone polymer production | Lacey E. Scoggins, Melvin D. Herd | 1992-07-28 |
| 5126431 | Production and recovery of poly(arylene sulfide ketone) and poly(arylene sulfide diketone) resins | — | 1992-06-30 |
| 5110901 | Higher molecular weight arylene sulfide resin and process for its preparation | Kenneth C. Hoover, Earl Clark, Jr., Roy E. Reger, Lacey E. Scoggins | 1992-05-05 |
| 5098992 | Method to recover high molecular weight poly(arylene sulfide) by reprecipitation | — | 1992-03-24 |
| 5091509 | Recovery of poly(arylene sulfide ketone) and poly(arylene sulfide diketone) resins | Jon F. Geibel | 1992-02-25 |
| 5089597 | Method to recover granular poly(arylene sulfide ketone) and poly(arylene sulfide diketone) | John E. Geibel | 1992-02-18 |
| 5053487 | Method to recover high molecular weight poly(arylene sulfide) by reprecipitation | — | 1991-10-01 |
| 5053486 | Process for preparing poly(arylene sulfide sulfone) with controlled ratio of alkali metal carboxylate to sulfur source | — | 1991-10-01 |
| 5045629 | Method to recover particulate poly(arylene) sulfides with vaporized separation agent | — | 1991-09-03 |
| 5045628 | Production and recovery of poly(arylene sulfide ketone) and poly(arylene sulfide diketone) resins | — | 1991-09-03 |
| 5041532 | Method of treating a poly(arylene sulfide/sulfone) resin, and composition of matter made in accordance therewith | Rex L. Bobsein | 1991-08-20 |
| 5037954 | Method to recover liquified poly(arylene sulfide) with separation agent | Rex L. Bobsein, Joseph G. Ceurvorst | 1991-08-06 |
| 5008368 | Preparation of poly(arylene sulfide/sulfone) polymer with addition of water after polymerization is initiated | — | 1991-04-16 |
| 5003042 | Preparation of poly(arylene sulfide ketone) and poly(arylene sulfide diketone) resins having improved filterability | — | 1991-03-26 |
| 4963651 | Method to recover poly(arylene sulfide)s with vaporized liquids | — | 1990-10-16 |
| 4958004 | Aromatic sulfide/sulfone polymer production | Kenneth C. Hoover, Lacey E. Scoggins, Wei-Tech W. Shang | 1990-09-18 |
| 4882418 | Washing arylene sulfide polymers with water plus a reducing agent | Guy Senatore, Fred T. Sherk | 1989-11-21 |
| 4877850 | Buffer wash of polyarylene sulfides | Jon F. Geibel | 1989-10-31 |
| 4801664 | Acid wash of polyarylene sulfides | Guy Senatore, Fred T. Sherk | 1989-01-31 |
| 4786711 | P-phenylene sulfide polymer preparation with dehydrated mixture of alkali metal hydroxide and excess alkali metal bisulfide | Guy Senatore | 1988-11-22 |
| 4767841 | Arylene sulfide polymer preparation from dehydrated admixture comprising sulfur source, cyclic amide solvent and water | Kenneth D. Goetz, Guy Senatore, Wei Shang | 1988-08-30 |