Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6486101 | Nitrogen containing dispersant-viscosity improvers | Richard M. Lange, Daniel M. Vargo | 2002-11-26 |
| 6265358 | Nitrogen containing dispersant-viscosity improvers | Richard M. Lange, Daniel M. Vargo | 2001-07-24 |
| 5985803 | Polyethoxylated alcohol-based phosphonates for metal working lubricants | Syed Q. A. Rizvi | 1999-11-16 |
| 5747433 | Oil concentrates of polymers with improved viscosity | Richard M. Lange, Joseph G. Seebauer | 1998-05-05 |
| 5698498 | Hydroxyalkyl dithiocarbamates, their borated esters and lubricants, functional fluids, greases and aqueous compositions containing the same | Syed Q. A. Rizvi, Bernard C. Roell, Jr. | 1997-12-16 |
| 5512192 | Dispersant-viscosity improvers for lubricating oil compositions | Richard M. Lange | 1996-04-30 |
| 5487839 | Grease compositions | James N. Vinci, Syed Q. A. Rizvi | 1996-01-30 |
| 5487838 | Reaction products of a boron compound and a phospholipid, and lubricant and aqueous fluids containing same | Syed Q. A. Rizvi | 1996-01-30 |
| 5298565 | Graft copolymers and lubricants containing such as dispersant-viscosity improvers | Richard M. Lange | 1994-03-29 |
| 4997969 | Carbamate additives for lubricating compositions | — | 1991-03-05 |
| 4938884 | Coupled phosphorus-containing amides | Paul E. Adams | 1990-07-03 |
| 4770801 | Coupled phosphorus-containing amides, precursors thereof and lubricant compositions containing same | Paul E. Adams | 1988-09-13 |
| 4670169 | Coupled phosphorus-containing amides, precursors thereof and lubricant compositions containing same | Paul E. Adams | 1987-06-02 |