Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5817605 | Automatic transmission and wet brake fluids and additive package therefor | — | 1998-10-06 |
| 5652201 | Lubricating oil compositions and concentrates and the use thereof | Rolfe J. Hartley | 1997-07-29 |
| 5612295 | Lubricant additive compositions | Donald R. Bell, Rolfe J. Hartley | 1997-03-18 |
| 5439606 | Modified succinimide or succinamide dispersants and their production | — | 1995-08-08 |
| 5389273 | Modified succinimide or succinamide dispersants and their production | — | 1995-02-14 |
| 5256324 | Modified succinimide or succinamide dispersants and their production | — | 1993-10-26 |
| 5198133 | Modified succinimide or sucinamide dispersants and their production | — | 1993-03-30 |
| 5174922 | Reducing copper corrosiveness of organic polysulfides | Edmund F. Perozzi | 1992-12-29 |
| 5164103 | Preconditioned atf fluids and their preparation | — | 1992-11-17 |
| 4857214 | Oil-soluble phosphorus antiwear additives for lubricants | Rolfe J. Hartley | 1989-08-15 |
| 4855074 | Homogeneous additive concentrates and their formation | Joseph P. O'Brien | 1989-08-08 |
| 4795583 | Shift-feel durability enhancement | — | 1989-01-03 |
| 4582939 | Mercaptan production | Edmund F. Perozzi | 1986-04-15 |
| 4519929 | Lubricating oil composition containing N-allyl amide graft copolymers | Joseph P. O'Brien | 1985-05-28 |
| 4505834 | Lubricating oil compositions containing graft copolymer as viscosity index improver-dispersant | Joseph P. O'Brien | 1985-03-19 |
| 4448974 | Polyalkylene succinimide lubricant additives | Joseph P. O'Brien | 1984-05-15 |
| 4356097 | Alkylphosphonate lubricating oil | — | 1982-10-26 |
| 4331545 | Lubricating compositions containing boronated N-alkanol hydrocarbylamide | Joseph P. O'Brien | 1982-05-25 |
| 4325827 | Fuel and lubricating compositions containing N-hydroxymethyl succinimides | Joseph P. O'Brien | 1982-04-20 |
| 4295983 | Lubricating oil composition containing boronated N-hydroxymethyl succinimide friction reducers | Joseph P. O'Brien | 1981-10-20 |
| 4293432 | Lubricating oil composition | Joseph P. O'Brien | 1981-10-06 |
| 4246125 | Lubricating oil and fuel composition | Joseph P. O'Brien | 1981-01-20 |
| 4237020 | Lubricating and fuel compositions containing succinimide friction reducers | Joseph P. O'Brien | 1980-12-02 |
| 4228020 | Lubricating oil composition | — | 1980-10-14 |
| 4225449 | Lubricating oil and fuel compositions | Joseph P. O'Brien | 1980-09-30 |