Granted Patent
Utility
US 5,205,949 · App. 07/717,762
Dispersant and VI improver additive and lubrication oil composition containing same
Inventors:
Theodore E. Nalesnik, Benjamin J. Kaufman, James G. Dadura
Patented Case
View Patent ↗
Granted: Apr 27, 1993
Filed: Jun 19, 1991
Inventors
Theodore E. Nalesnik
Benjamin J. Kaufman
James G. Dadura
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.