Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8377856 | Extended drain diesel lubricant formulations | David A. Hutchison | 2013-02-19 |
| 8093189 | Lubricating oil compositions for inhibiting coolant-induced oil filter plugging | Charles A. Passut, Paul G. Griffin | 2012-01-10 |
| 7732390 | Phenolic dimers, the process of preparing same and the use thereof | Abbas Kadkhodayan, Ju-Fu Shiau, Joe S. Bradley, Charles A. Passut | 2010-06-08 |
| 7253231 | Grafted multi-functional olefin copolymer VI modifiers and uses thereof | Charles A. Passut, Joe S. Bradley, Michael A. Danylo, Yoon Song, Sanjay Srinivasan +6 more | 2007-08-07 |