Granted Patent
Utility
US 4,922,045 · App. 07/081,268
Diesel lubricating oil consumption control additives
Inventors:
William R. White, Mary Ann Dahlstrom, Scott O. Lindholm
Patented Case
View Patent ↗
Granted: May 1, 1990
Filed: Aug 3, 1987
Inventors
William R. White
Mary Ann Dahlstrom
Scott O. Lindholm
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.