Granted Patent
Utility
US 5,472,627 · App. 08/346,360
Polymeric lubricant additive designed to enhance anti-wear, anti-oxidancy, and dispersancy thereof
Inventors:
Thomas F. DeRosa, Nicholas Benfaremo, Maria M. Kapuscinski, Benjamin J. Kaufman, Rosemary J. Jennejahn
Patented Case
View Patent ↗
Granted: Dec 5, 1995
Filed: Nov 29, 1994
Inventors
Thomas F. DeRosa
Nicholas Benfaremo
Maria M. Kapuscinski
Benjamin J. Kaufman
Rosemary J. Jennejahn
Assignee (at issue)
Texaco Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.