Granted Patent
Utility
US 6,797,677 · App. 10/158,096
Antioxidant combination for oxidation and deposit control in lubricants containing molybdenum and alkylated phenothiazine
Inventors:
Carl K. Esche, Jr., Vincent J. Gatto
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: May 30, 2002
Inventors
Carl K. Esche, Jr.
Vincent J. Gatto
Assignee (at issue)
Afton Chemical Corporation
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.