Issued Patents 1982
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4352755 | Production of maleic anhydride | Raymond Higgins, Deborah A. Trebilco, Philip E. Starkey | 1982-10-05 |
| 4317777 | Production of maleic acid and anhydride | Raymond Higgins | 1982-03-02 |