Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4888115 | Cross-flow filtration | Paul J. Marinaccio | 1989-12-19 |
| 4867934 | Production of hollow nylon fibers | Stephen R. Troy | 1989-09-19 |
| 4820460 | Method of manufacturing a hollow porous fiber | Scott P. Yaeger, Chaokang Chu | 1989-04-11 |