Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5958989 | Highly asymmetric ultrafiltration membranes | I-Fan Wang, Jerome F. Ditter, Richard A. Morris | 1999-09-28 |
| 5928774 | Highly asymmetric ultrafiltration membranes | I-Fan Wang, Jerome F. Ditter, Richard A. Morris | 1999-07-27 |
| 5685991 | Integrity-testable wet-dry-reversible ultrafiltration membranes and method for testing same | Peter J. Degen, John Mischenko, III, Moira H. Bilich, Trevor A. Staff | 1997-11-11 |
| 5480554 | Integrity-testable wet-dry-reversible ultrafiltration membranes and method for testing same | Peter J. Degen, John Mischenko, III, Moira H. Bilich, Trevor A. Staff | 1996-01-02 |
| 4880441 | Asymmetric gas separation membranes having graded density skins | Alfred K. Fritzsche, Milton K. Murphy, Alan Handerman, Clint A. Cruse, Raymond F. Malon | 1989-11-14 |
| 4871494 | Process for forming asymmetric gas separation membranes having graded density skins | Alfred K. Fritzsche, Milton K. Murphy, Alan C. Handermann, Clint A. Cruse, Raymond F. Malon | 1989-10-03 |
| 4477598 | High strength nylon blend membranes | — | 1984-10-16 |
| 4450126 | High strength nylon blend membranes | — | 1984-05-22 |
| 4333972 | Highly anisotropic membranes | — | 1982-06-08 |
| 4280970 | Polyoxyethylene grafted membrane materials with grafting links derived from a diisocyanate | — | 1981-07-28 |
| 4220477 | Flexible microporous cellulosic membranes and methods of formation and use thereof | — | 1980-09-02 |
| 4219517 | Process for spinning dense hollow fiber cellulosic membrane | — | 1980-08-26 |