Granted Patent
Utility
US 5,094,765 · App. 07/516,383
Lubricating oil composition
Inventors:
Thomas F. DeRosa, Maria M. Kapuscinski, Rosemary J. Jennejahn, Theodore E. Nalesnik
Patented Case
View Patent ↗
Granted: Mar 10, 1992
Filed: Apr 30, 1990
Inventors
Thomas F. DeRosa
Maria M. Kapuscinski
Rosemary J. Jennejahn
Theodore E. Nalesnik
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.