Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4963279 | C14-carboxylate polymer and viscosity index improver containing oleaginous compositions | Celio Rosental | 1990-10-16 |
| 4957650 | Lubricating oil composition containing dual additive combination for low temperature viscosity improvement | John P. Szykowski, Robert D. Tack | 1990-09-18 |
| 4839074 | Specified C.sub.14 -carboxylate/vinyl ester polymer-containing compositions for lubricating oil flow improvement | Robert D. Tack, Kenneth Lewtas, Jose Alves | 1989-06-13 |
| 4826615 | Lubricating oil composition containing dual additive combination for low temperature viscosity improvement (PTF-004) | John P. Szykowski, Robert D. Tack | 1989-05-02 |
| 4810260 | Middle distillate compositions with improved cold flow properties | Robert D. Tack, Sarah L. Pearce | 1989-03-07 |
| 4713088 | Middle distillate compositions with improved cold flow properties | Robert D. Tack, Sarah L. Pearce | 1987-12-15 |
| 4594142 | Dewaxing waxy hydrocarbon oils using di-alkyl fumarate-vinyl laurate copolymer dewaxing aids | Biddanda U. Achia, Abraham R. DeKraker | 1986-06-10 |
| 4569679 | Additive concentrates for distillate fuels | — | 1986-02-11 |
| 4546137 | Additive combinations and fuels containing them | David H. Rehrer, Alexis A. Oswald, Kenneth Lewtas, Robert D. Tack | 1985-10-08 |
| 4537602 | Additive concentrates for distillate fuels | Kenneth Lewtas | 1985-08-27 |
| 4514314 | Oil soluble ester pour point depressant additive for lubricants | — | 1985-04-30 |
| 4375973 | Additive combinations and fuels containing them | David H. Rehrer, Alexis A. Oswald, Kenneth Lewtas, Robert D. Tack | 1983-03-08 |
| 4240916 | Pour point depressant additive for fuels and lubricants | — | 1980-12-23 |