Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6465050 | Non-cracking hydrophilic polyethersulfone membranes | James S. Johnson | 2002-10-15 |
| 6193077 | Non-cracking hydrophilic polyethersulfone membranes | James S. Johnson | 2001-02-27 |
| 6056903 | Preparation of polyethersulfone membranes | John M. Greenwood, Jr., James S. Johnson | 2000-05-02 |
| 5693231 | Aromatic/aliphatic nylon polymer microporous membranes | James S. Johnson, Edward T. Carter | 1997-12-02 |
| 5006234 | Reverse osmosis water purification systems | Krishna S. Menon | 1991-04-09 |