Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4867960 | Water scavengers for hydrochloric acid streams | — | 1989-09-19 |
| 4865822 | Process for purifying hydrogen selenide and hydrogen telluride, to remove moisture and oxidant impurities therefrom | Duncan W. Brown | 1989-09-12 |
| 4853148 | Process and composition for drying of gaseous hydrogen halides | Duncan W. Brown | 1989-08-01 |
| 4797227 | Process and composition for purifying hydrogen selenide and hydrogen telluride, to remove moisture and oxidant impurities therefrom | Duncan W. Brown | 1989-01-10 |