Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4886926 | Catalytic dehydrogenation of hydrocarbons over tin-containing crystalline microporous materials | Ralph M. Dessau, Ernest W. Valyocsik | 1989-12-12 |
| 4810357 | Catalytic dewaxing of light and heavy oils in dual parallel reactors | Arthur W. Chester, William E. Garwood | 1989-03-07 |