Issued Patents All Time
Showing 51–72 of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5356459 | Production and use of improved composite fluid separation membranes | Joyce K. Nelson | 1994-10-18 |
| 5348569 | Modified poly(phenylene oxide) based membranes for enhanced fluid separation | Gertrud Gotz, Yurdagul F. Ozcayir, Joyce K. Nelson | 1994-09-20 |
| 5194159 | Treatment of lower glycol-containing operative fluids | Kathleen F. George, Lise Dahuron, John H. Robson, George E. Keller, II | 1993-03-16 |
| 5181940 | Hollow fiber membranes | James Timothy Macheras, Joyce K. Nelson | 1993-01-26 |
| 5160042 | Double ended hollow fiber bundle and fluids separation apparatus | Salvatore Giglia | 1992-11-03 |
| 5131927 | Reactive treatment of composite gas separation membranes | Joyce K. Nelson | 1992-07-21 |
| 5102549 | Treatment of lower glycol-containing operative fluids | Kathleen F. George, Lise Dahuron, John H. Robson, George E. Keller, II | 1992-04-07 |
| 5071552 | Multiple bundle fluid separation apparatus | Salvatore Giglia | 1991-12-10 |
| 5071448 | Semipermeable membranes based on certain sulfonated substituted polysulfone polymers | Joyce K. Nelson, Gertrud Gotz, Yurdagul F. Ozcayir | 1991-12-10 |
| 5067971 | Process for dehydration of gases and composite permeable membranes therefor | Salvatore Giglia, Joyce K. Nelson | 1991-11-26 |
| 5026479 | Fluid separation device | Salvatore Giglia | 1991-06-25 |
| 5009678 | Process for recovery of ammonia from an ammonia-containing gas mixture | Joyce K. Nelson, Jerry E. Perrin | 1991-04-23 |
| 4990165 | Permeable membranes for enhanced gas separation | James E. Miller, Joyce K. Nelson | 1991-02-05 |
| 4971695 | Sulfonated hexafluoro bis-a polysulfone membranes and process for fluid separations | James H. Kawakami, Gertrud Gotz, Yurdagul F. Ozcayir | 1990-11-20 |
| 4881955 | Method for gas separation using helically wound hollow fibers permeable membrane cartridge | Slavatore Giglia | 1989-11-21 |
| 4881954 | Permeable membranes for enhanced gas separation | James E. Miller, Joyce K. Nelson | 1989-11-21 |
| 4877421 | Treatment of permeable membranes | Salvatore Giglia | 1989-10-31 |
| 4840819 | Method for preparing composite membranes for enhanced gas separation | Samuel Williams, Joyce K. Nelson, Robert Douglas Burchesky | 1989-06-20 |
| 4826599 | Composite membranes and their manufacture and use | Joyce K. Nelson | 1989-05-02 |
| 4800019 | Tubesheet for semipermeable membrane devices | Salvatore Giglia | 1989-01-24 |
| 4767422 | Composite separation membranes and the preparation and use thereof | Salvatore Giglia, Gregory B. Kharas | 1988-08-30 |
| 4508852 | Compositions and method of preparation by chlorosulfonation of difficultly sulfonatable poly(ether sulfone) | Myron J. Coplan, Gertrud Gotz | 1985-04-02 |