Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5011637 | Preparing cellulose ester membranes for gas separation | Dana Overman, Robert D. Mahoney | 1991-04-30 |
| 4980063 | Compositions useful for preparing cellulose ester membranes for liquid separations | Robert D. Mahoney, Roger B. Hornby, Ernest A. Sharer | 1990-12-25 |
| 4941972 | Chlorine-stable membrane compositions | Dale M. Pickelman, Donald L. Schmidt, Ritchie A. Wessling | 1990-07-17 |
| 4839203 | Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups | Thomas E. Davis, Donald L. Schmidt, Ritchie A. Wessling, Sharon S. Whipple, Richard F. Fibiger +1 more | 1989-06-13 |
| 4797187 | Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups | Thomas E. Davis, Donald L. Schmidt, Ritchie A. Wessling, Sharon S. Whipple, Richard F. Fibiger +1 more | 1989-01-10 |
| 4704324 | Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups | Thomas E. Davis, Donald L. Schmidt, Ritchie A. Wessling, Sharon S. Whipple, Richard F. Fibiger +1 more | 1987-11-03 |