Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5290884 | Blends of polybenzimidazoles and aromatic polyamides, aromatic polyamide-hydrazides or aromatic polyamides containing heterocyclic linkages | Gordon Calundann, Friedrich Herold, Tai-Shung Chung | 1994-03-01 |
| 5277981 | Thermo-oxidatively stabilized polybenzimidazole-containing articles | M. Ishaq Haider | 1994-01-11 |