Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5512261 | Process for removing sulfur dioxide from fluids | Earl Clark, Jr. | 1996-04-30 |
| 5438115 | Process for preparing poly(arylene sulfide) polymers | Darryl R. Fahey, Owen H. Decker, Carlton E. Ash, Jon F. Geibel, Fernando C. Vidaurri +4 more | 1995-08-01 |
| 5347018 | Process for producing sulfolane compounds | Earl Clark, Jr., Howard F. Efner | 1994-09-13 |
| 5321121 | Arylene sulfide copolymer | Michael C. Yu | 1994-06-14 |
| 5290953 | Process for producing sulfolane compounds | Earl Clark, Jr. | 1994-03-01 |
| 5260489 | Purification of halogenated aromatic sulfones or ketones | Rex L. Robsein, Darryl R. Fahey | 1993-11-09 |
| 5219983 | Preparation of poly (biphenylene/phenylene) sulfide | Michael C. Yu | 1993-06-15 |
| 4990678 | Purification of halogenated aromatic sulfones or ketones | Melvin D. Herd, Albert G. Holba | 1991-02-05 |