Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4873037 | Method for preparing an asymmetric semi-permeable membrane | C. C. Chau, Jang-hi Im, Otto C. Raspor | 1989-10-10 |
| 4851454 | Photolytically crosslinkable thermally stable composition | Jerry E. White, Mary K. Dehnke | 1989-07-25 |