Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4959082 | Polycarbonate gas separation membranes containing substituted benzenes and processes for making and using the same | Daniel O. Clark | 1990-09-25 |
| 4955993 | Semi-permeable hollow fiber gas separation membranes possessing a non-external discriminating region | Edgar S. Sanders, Jr., John A. Jensvold, Daniel O. Clark, Frederick L. Coan, Henry N. Beck +2 more | 1990-09-11 |
| 4900334 | Process for treating a liquid-wet polycarbonate membrane to improve its gas separation properties | John A. Jensvold, Daniel O. Clark | 1990-02-13 |
| 4843733 | Process for drying water-wet polycarbonate membranes | — | 1989-07-04 |