Granted Patent
Utility
US 5,474,693 · App. 08/405,378
Modifiers for improving clarity of multifunctional VI improver oil compositions
Inventors:
Maria M. Kapuscinski, Richard A. Abranshe
Patented Case
View Patent ↗
Granted: Dec 12, 1995
Filed: Mar 15, 1995
Inventors
Maria M. Kapuscinski
Richard A. Abranshe
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.