Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859393 | Method of preparing poly (p-phenyleneterephthalamide) yarns of improved fatigue resistance | Minshon J. Chiou | 1989-08-22 |
| 4836507 | Aramid staple and pulp prepared by spinning | — | 1989-06-06 |