Issued Patents All Time
Showing 26–50 of 61 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5077366 | Novel phosphonic acid compounds and method of preparation | Gerald K. McEwen | 1991-12-31 |
| 5047578 | Novel phosphonic acid compounds and method of preparation | Gerald K. McEwen | 1991-09-10 |
| 5006624 | Fluorocarbon containing, reactive polymeric surfactants and coating compositions therefrom | Charles E. Coburn, Perry J. McCrackin | 1991-04-09 |
| 4968433 | Removal of organic cations from polar fluids | Norman E. Skelly | 1990-11-06 |
| 4941972 | Chlorine-stable membrane compositions | Jee I. Kau, Dale M. Pickelman, Ritchie A. Wessling | 1990-07-17 |
| 4929556 | Enzyme immobilization with polysulfonium salts | Roberta C. Cheng, Ritchie A. Wessling | 1990-05-29 |
| 4929666 | Fluorocarbon containing, reactive polymeric surfactants and coating compositions therefrom | Perry J. McCrackin, Charles E. Coburn | 1990-05-29 |
| 4909943 | Rejection enhancing coatings for reverse osmosis membranes | Richard F. Fibiger, Michael J. Colucci, David J. Forgach, Ritchie A. Wessling | 1990-03-20 |
| 4894165 | Rejection enhancing coatings for reverse osmosis membranes | Richard F. Fibiger, Michael J. Colucci, David J. Forgach, Ritchie A. Wessling | 1990-01-16 |
| 4888116 | Method of improving membrane properties via reaction of diazonium compounds or precursors | John E. Cadotte | 1989-12-19 |
| 4885355 | Water-insoluble polymers from cyclic sulfonium compounds | Ritchie A. Wessling, Kiyoshi AIKAWA | 1989-12-05 |
| 4859384 | Novel polyamide reverse osmosis membranes | Richard F. Fibiger, Ja-Young Koo, David J. Forgach, Robert J. Petersen, Ritchie A. Wessling +1 more | 1989-08-22 |
| 4839203 | Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups | Thomas E. Davis, Jee I. Kau, Ritchie A. Wessling, Sharon S. Whipple, Richard F. Fibiger +1 more | 1989-06-13 |
| 4828700 | Rejection enhancing coatings for reverse osmosis membranes | Richard F. Fibiger, Michael J. Colucci, David J. Forgach, Ritchie A. Wessling | 1989-05-09 |
| 4812238 | Membranes prepared via reaction of diazonium compounds or precursors | John E. Cadotte | 1989-03-14 |
| 4797456 | Aqueous-dispersible cyclic sulfonium compounds that cure to form water-insoluble polymers | Ritchie A. Wessling, Kiyoshi AIKAWA | 1989-01-10 |
| 4797187 | Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups | Thomas E. Davis, Jee I. Kau, Ritchie A. Wessling, Sharon S. Whipple, Richard F. Fibiger +1 more | 1989-01-10 |
| 4769941 | Device for holding fishing lures | — | 1988-09-13 |
| 4769148 | Novel polyamide reverse osmosis membranes | Richard F. Fibiger, Ja-Young Koo, David J. Forgach, Robert J. Petersen, Ritchie A. Wessling +1 more | 1988-09-06 |
| 4764564 | Perfluorocarbon based polymeric coatings having low critical surface tensions | Demetrius Urchick | 1988-08-16 |
| 4758384 | Novel phosphonic acid compounds and method of preparation | Gerald K. McEwen | 1988-07-19 |
| 4733005 | Phosphinyl-containing ethylenically unsaturated compounds | Gerald K. McEwen | 1988-03-22 |
| 4704324 | Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups | Thomas E. Davis, Jee I. Kau, Ritchie A. Wessling, Sharon S. Whipple, Richard F. Fibiger +1 more | 1987-11-03 |
| 4658003 | Novel phosphinyl-containing ethylenically unsaturated compounds | Gerald K. McEwen | 1987-04-14 |
| 4606973 | Substrate with perfluorocarbon polymeric coatings having low critical surface tensions | Demetrius Urchick | 1986-08-19 |