Issued Patents All Time
Showing 26–33 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4517104 | Ethylene copolymer viscosity index improver-dispersant additive useful in oil compositions | Ricardo Bloch, Thomas J. McCrary | 1985-05-14 |
| 4502970 | Lubricating oil composition | Alan A. Schetelich, Norman Tunkel | 1985-03-05 |
| 4491524 | Lubricating additive for drilling muds | Antonio Gutierrez, Thad O. Walker, Stanley J. Brois | 1985-01-01 |
| 4486326 | Copper complexes of oxazolines and lactone oxazolines as lubricating oil additives | Antonio Gutierrez, Stanley J. Brois | 1984-12-04 |
| 4431551 | Oxazolines of 2-(alkylthio)succinic acids as an additive for drilling muds | Antonio Gutierrez, Robert C. Portnoy, Stanley J. Brois | 1984-02-14 |
| 4427564 | Additive composition for release of stuck drill pipe | Antonio Gutierrez, Patricia C. Matthews, Thad O. Walker | 1984-01-24 |
| 4388201 | Co-dispersant stabilized friction modifier lubricating oil composition | Harold Shaub, Max J. Wisotsky, Antonio Gutierrez | 1983-06-14 |
| 4382002 | Drilling fluids containing an additive composition | Thad O. Walker, Antonio Gutierrez | 1983-05-03 |