Issued Patents All Time
Showing 26–28 of 28 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4900334 | Process for treating a liquid-wet polycarbonate membrane to improve its gas separation properties | Wudneh Admassu, Daniel O. Clark | 1990-02-13 |
| 4838904 | Semi-permeable membranes with an internal discriminating region | Edgar S. Sanders, Jr., Daniel O. Clark | 1989-06-13 |
| 4772392 | Process for preparing POWADIR membranes from tetrahalobisphenol A polycarbonates | Edgar S. Sanders, Jr., Daniel O. Clark, Henry N. Beck, G. Glenn Lipscomb, II, Frederick L. Coan | 1988-09-20 |