Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7926453 | Engine oil compositions | Stephen H. Roby | 2011-04-19 |
| 7678747 | Engine oil compositions | Stephen H. Roby | 2010-03-16 |
| 7465696 | Lubricating base oil compositions and methods for improving fuel economy in an internal combustion engine using same | Stephen H. Roby | 2008-12-16 |
| 5330663 | Neutral and low overbased alkylphenoxy sulfonate additive compositions | Robert H. Wollenberg, Richard J. Nelson, John H. McDonald, III, Curtis B. Campbell, Kathryn E. Matera | 1994-07-19 |
| 5330664 | Neutral and low overbased alkylphenoxy sulfonate additive compositions derived from alkylphenols prepared by reacting an olefin or an alcohol with phenol in the presence of an acidic alkylation catalyst | Robert H. Wollenberg, Richard J. Nelson, John H. McDonald, III, Curtis B. Campbell, Kathryn E. Matera | 1994-07-19 |