Granted Patent
Utility
US 5,935,913 · App. 09/173,888
Cyclic thiourea additives for lubricants
Inventors:
Theodore Nalesnik, Cyril A. Migdal
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: Oct 16, 1998
Inventors
Theodore Nalesnik
Cyril A. Migdal
Assignee (at issue)
Uniroyal Chemical Company, 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.