Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5198505 | Uniform polyvinylidene difluoride membranes | Ioannis P. Sipsas, Isaac Rothmann | 1993-03-30 |
| 5196508 | Method for making uniform polyvinylidene difluoride membranes | Ioannis P. Sipsas, Isaac Rothmann | 1993-03-23 |
| 5154829 | Polyamide membrane with controlled surface properties | Peter J. Degen, Thomas C. Gsell | 1992-10-13 |
| 4855163 | Method of making polyvinylidene difluoride structure | Peter J. Degen, Frederick A. Baltusis | 1989-08-08 |
| 4774132 | Polyvinylidene difluoride structure | Peter J. Degen, Frederick A. Baltusis | 1988-09-27 |
| 4734208 | Charge-modified microfiber filter sheets | David B. Pall, Peter J. Degen, Warren M. Foss, Thomas C. Gsell | 1988-03-29 |
| 4707266 | Polyamide membrane with controlled surface properties | Peter J. Degen, Thomas C. Gsell | 1987-11-17 |
| 4702840 | Charge modified polyamide membrane | Peter J. Degen, Thomas C. Gsell | 1987-10-27 |
| 4523995 | Charge-modified microfiber filter sheets | David B. Pall, Peter J. Degen, Warren M. Foss, Thomas C. Gsell | 1985-06-18 |