Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4882034 | Crude oil or fuel oil compositions | Kenneth Lewtas | 1989-11-21 |
| 4874394 | Crude oil and fuel oil compositions | Rodger F. Andrews, Sally J. Ayres | 1989-10-17 |
| 4863486 | Middle distillate compositions with improved low temperature properties | Sarah L. Pearce | 1989-09-05 |
| 4839074 | Specified C.sub.14 -carboxylate/vinyl ester polymer-containing compositions for lubricating oil flow improvement | Albert Rossi, Kenneth Lewtas, Jose Alves | 1989-06-13 |
| 4826615 | Lubricating oil composition containing dual additive combination for low temperature viscosity improvement (PTF-004) | Albert Rossi, John P. Szykowski | 1989-05-02 |
| 4810260 | Middle distillate compositions with improved cold flow properties | Sarah L. Pearce, Albert Rossi | 1989-03-07 |