Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5654251 | Isoparaffin-olefin alkylation | Ralph P. Williams, Marvin M. Johnson, John W. Vanderveen | 1997-08-05 |
| 5639932 | Isoparaffin-olefin alkylation | Bruce B. Randolph | 1997-06-17 |