Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863891 | Catalyst for the manufacture of acrylonitrile and methacrylonitrile | Robert K. Grasselli, Arthur F. Miller | 1989-09-05 |
| 4864057 | Dehydrogenation of carboxylic acids with mixed metal phosphorus oxide catalysts | S. Erik Pedersen, James L. Callahan | 1989-09-05 |