Issued Patents All Time
Showing 1–12 of 12 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6387964 | Water based grafting | John Michael Newton | 2002-05-14 |
| 6225368 | Water based grafting | John Michael Newton | 2001-05-01 |
| 5830921 | Cation exchange membranes and method for the preparation of such membranes | Graham Edward Cooley | 1998-11-03 |
| 5705534 | Method for the preparation of cation exchange membranes doped with insoluble metal salts | Graham Edward Cooley, John Michael Newton, Karel Bouchal | 1998-01-06 |
| 5626731 | Cation exchange membranes and method for the preparation of such membranes | Graham Edward Cooley | 1997-05-06 |
| 4543169 | Gold recovery process | Joseph Y. Lee, Stephen Zapisek, George Schore | 1985-09-24 |
| 4500396 | Copper recovery process | Joseph Y. Lee, Stephen Zapisek, George Schore | 1985-02-19 |
| RE31824 | Separator membranes for electrochemical cells | Joseph Y. Lee, Joseph C. Sentisi | 1985-02-05 |
| 4468441 | Separator membranes for redox-type electrochemical cells | Joseph Y. Lee | 1984-08-28 |
| 4414090 | Separator membranes for redox-type electrochemical cells | Joseph Y. Lee | 1983-11-08 |
| 4339473 | Gamma radiation grafting process for preparing separator membranes for electrochemical cells | Joseph Y. Lee | 1982-07-13 |
| 4230549 | Separator membranes for electrochemical cells | Joseph Y. Lee, Joseph C. Sentisi | 1980-10-28 |