Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12313346 | Direct-contact heat exchange thermal energy storage system | Mitchell Ishmael, Levon Atoyan, Ronald Kwok, Sonya Sokhey, Jesse Buckley +1 more | 2025-05-27 |
| 5658460 | Use of inorganic ammonium cation salts to maintain the flux and salt rejection characteristics of reverse osmosis and nanofiltration membranes during drying | Daniel A. Batzel, Thomas F. Stocker | 1997-08-19 |
| 4964998 | Use of treated composite polyamide membranes to separate concentrated solute | Joel Racchini, Robert J. Petersen | 1990-10-23 |
| 4960517 | Treatment of composite polyamide membranes via substitution with amine reactive reagents | — | 1990-10-02 |
| 4960518 | Treatment of composite polyamide membranes with compatible oxidants | Joel Racchini | 1990-10-02 |
| 4895661 | Alkali resistant hyperfiltration membrane | — | 1990-01-23 |
| 4888116 | Method of improving membrane properties via reaction of diazonium compounds or precursors | Donald L. Schmidt | 1989-12-19 |
| 4834886 | Process for making alkali resistant hyperfiltration membrane and resulting product | — | 1989-05-30 |
| 4824574 | Novel water softening process using membranes | David R. Walker | 1989-04-25 |
| 4812270 | Novel water softening membranes | David R. Walker | 1989-03-14 |
| 4812238 | Membranes prepared via reaction of diazonium compounds or precursors | Donald L. Schmidt | 1989-03-14 |
| 4765897 | Polyamide membranes useful for water softening | David R. Walker | 1988-08-23 |
| 4277344 | Interfacially synthesized reverse osmosis membrane | — | 1981-07-07 |
| 4259183 | Reverse osmosis membrane | — | 1981-03-31 |