Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4826502 | Sulfonation of hydroxyethylated polybenzimidazole fibers | Michael J. Sansone, Harry S. Pulaski | 1989-05-02 |
| 4814228 | Wet spun hydroxyethylated polybenzimidazole fibers | Michael J. Sansone, Arthur G. Schlask | 1989-03-21 |