Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881954 | Permeable membranes for enhanced gas separation | James E. Miller, Joyce K. Nelson | 1989-11-21 |
| 4881955 | Method for gas separation using helically wound hollow fibers permeable membrane cartridge | Slavatore Giglia | 1989-11-21 |
| 4877421 | Treatment of permeable membranes | Salvatore Giglia | 1989-10-31 |
| 4840819 | Method for preparing composite membranes for enhanced gas separation | Samuel Williams, Joyce K. Nelson, Robert Douglas Burchesky | 1989-06-20 |
| 4826599 | Composite membranes and their manufacture and use | Joyce K. Nelson | 1989-05-02 |
| 4800019 | Tubesheet for semipermeable membrane devices | Salvatore Giglia | 1989-01-24 |