Granted Patent
Utility
US 4,439,612 · App. 06/189,514
Preparation for use as lube oil additives of thioureas containing N-polyalkyleneamino hydrocarbyl succinimido groups
Inventor:
Gary T. Babic
Patented Case
View Patent ↗
Granted: Mar 27, 1984
Filed: Sep 22, 1980
Inventor
Gary T. Babic
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.