Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4902493 | Process for the generation of sulfur trioxide reagent and sulfonation of the surface of polymeric resins | Wilhelm E. Walles, Donald L. Tomkinson | 1990-02-20 |
| 4444978 | Thermally stable carbonate polymer | Kevin F. Dick | 1984-04-24 |