Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5942471 | Dispersant and antioxidant VI improvers based on olefin copolymers containing phenothiazine and aromatic amine groups | Robert T. Biggs | 1999-08-24 |
| 5534171 | Process for making a polymeric lubricant additive designed to enhance anti-wear, anti-oxidancy, and dispersancy thereof | Thomas F. DeRosa, Nicholas Benfaremo, Benjamin J. Kaufman, Rosemary J. Jennejahn | 1996-07-09 |
| 5520829 | Lubricating oil containing dispersant viscosity index improver | Christopher S. Liu, Larry D. Grina, Ronald E. Jones | 1996-05-28 |
| 5474693 | Modifiers for improving clarity of multifunctional VI improver oil compositions | Richard A. Abranshe | 1995-12-12 |
| 5472627 | Polymeric lubricant additive designed to enhance anti-wear, anti-oxidancy, and dispersancy thereof | Thomas F. DeRosa, Nicholas Benfaremo, Benjamin J. Kaufman, Rosemary J. Jennejahn | 1995-12-05 |
| 5424366 | Multifunctional viscosity index improver containing phenothiazine | Theodore E. Nalesnik, Robert T. Biggs, Benjamin J. Kaufman | 1995-06-13 |
| 5374364 | Multifunction viscosity index improvers | Nicholas Benfaremo, Robert T. Biggs | 1994-12-20 |
| 5356999 | Multifunctional viscosity index improvers based on polymers containing sulfonamides | Benjamin J. Kaufman, Robert T. Biggs | 1994-10-18 |
| 5275746 | Multifunctional viscosity index improver containing phenothiazine | Benjamin J. Kaufman, Theodore E. Nalesnik, Robert T. Biggs | 1994-01-04 |
| 5200100 | Multifunctional viscosity index improver containing phenothiazine | Theodore E. Nalesnik, Robert T. Biggs, Benjamin J. Kaufman | 1993-04-06 |
| 5162086 | Dispersant additive and lubricating oil composition containing same | Cyril A. Migdal, Theodore E. Nalesnik | 1992-11-10 |
| 5160446 | Dispersant, VI improver and antioxidant additive, and lubricating oil composition containing same | Theodore E. Nalesnik | 1992-11-03 |
| 5135671 | Multifunctional viscosity index improver containing units from unsaturated chlorides and aromatic amines | Theodore E. Nalesnik, Robert T. Biggs, Raymond C. Schlicht | 1992-08-04 |
| 5094765 | Lubricating oil composition | Thomas F. DeRosa, Rosemary J. Jennejahn, Theodore E. Nalesnik | 1992-03-10 |
| 5094766 | Dispersant-antioxidant viscosity index improver | Robert T. Biggs, Theodore E. Nalesnik | 1992-03-10 |
| 5021177 | Dispersant-antioxidant multifunctional viscosity index improver | Thomas F. DeRosa, Robert T. Biggs, Theodore E. Nalesnik | 1991-06-04 |
| 4952637 | Hydrocarbon compositions containing polyolefin graft polymers | Larry D. Grina, Ronald E. Jones, Rodney L. Sung | 1990-08-28 |
| 4948524 | Dispersant anti-oxidant VI improver and lubricating oil composition containing same | Theodore E. Nalesnik, Robert T. Biggs, Harry Chafetz, Christopher S. Liu | 1990-08-14 |
| 4941985 | Dispersant/antioxidant VII lubricant additive | Nicholas Benfaremo, Theodore E. Nalesnik | 1990-07-17 |
| 4904404 | Lubricating oil containing viscosity index improver | Christopher S. Liu, Nicholas Benfaremo, Larry D. Grina | 1990-02-27 |
| 4886611 | Hydrocarbon compositions containing polyolefin graft polymers | Larry D. Grina, Ronald E. Jones, Rodney L. Sung | 1989-12-12 |
| 4877415 | Hydrocarbon compositions containing polyolefin graft polymers | Larry D. Grina, Ronald E. Jones, Rodney L. Sung | 1989-10-31 |
| 4842756 | Multifunctional viscosity index improver | Christopher S. Liu, Larry D. Grina, Ronald E. Jones | 1989-06-27 |
| 4836943 | Anti-oxidant system | Christopher S. Liu, Ronald E. Jones, Larry D. Grina | 1989-06-06 |
| 4820776 | Hydrocarbon compositions containing polyolefin graft polymers having amine and phenothiazine grafted moieties | Larry D. Grina, Ronald E. Jones, Rodney L. Sung | 1989-04-11 |