Granted Patent
Utility
US 5,962,377 · App. 08/881,415
Lubricant additive formulation
Inventors:
Richard J. Baumgart, Frances E. Lockwood, Michael A. Dituro
Patented Case
View Patent ↗
Granted: Oct 5, 1999
Filed: Jun 24, 1997
Inventors
Richard J. Baumgart
Frances E. Lockwood
Michael A. Dituro
Assignee (at issue)
Ashland, 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.