Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8623798 | Lubricating oil compositions containing a tetraalkyl-napthalene-1,8 diamine antioxidant | Richard E. Cherpeck, Gaurav Bhalla | 2014-01-07 |
| 8003583 | Benzo[b]perhydroheterocyclic arylamines and lubricating oil compositions | Richard E. Cherpeck | 2011-08-23 |
| 7683017 | Synergistic lubricating oil composition containing a mixture of a nitro-substituted diarylamine and a diarylamine | Richard E. Cherpeck | 2010-03-23 |
| 7501386 | Synergistic lubricating oil composition containing a mixture of a benzo[b]perhydroheterocyclic arylamine and a diarylamine | Richard E. Cherpeck | 2009-03-10 |
| 7285518 | Dibenzo[b]perhydroheterocyclic amines and lubricating oil compositions | Richard E. Cherpeck | 2007-10-23 |