Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4839203 | Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups | Thomas E. Davis, Donald L. Schmidt, Jee I. Kau, Ritchie A. Wessling, 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, Jee I. Kau, Ritchie A. Wessling, Richard F. Fibiger +1 more | 1989-01-10 |