Issued Patents 1989
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4885355 | Water-insoluble polymers from cyclic sulfonium compounds | Donald L. Schmidt, Kiyoshi AIKAWA | 1989-12-05 |
| 4868222 | Preparation of asymmetric membranes by the solvent extraction of polymer components from polymer blends | Chieh-Chun Chau | 1989-09-19 |
| 4859339 | Microporous membranes of syndiotactic vinylaromatic polymers | Chieh-Chun Chau, Alan F. Burmester | 1989-08-22 |
| 4859384 | Novel polyamide reverse osmosis membranes | Richard F. Fibiger, Ja-Young Koo, David J. Forgach, Robert J. Petersen, Donald L. Schmidt +1 more | 1989-08-22 |
| 4839203 | Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups | Thomas E. Davis, Donald L. Schmidt, Jee I. Kau, 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, Donald L. Schmidt | 1989-05-09 |
| 4806439 | Temporary barrier layer in batteries | Jang-hi Im | 1989-02-21 |
| 4797187 | Semi-permeable membranes prepared via reaction of cationic groups with nucleophilic groups | Thomas E. Davis, Donald L. Schmidt, Jee I. Kau, Sharon S. Whipple, Richard F. Fibiger +1 more | 1989-01-10 |
| 4797456 | Aqueous-dispersible cyclic sulfonium compounds that cure to form water-insoluble polymers | Donald L. Schmidt, Kiyoshi AIKAWA | 1989-01-10 |