Granted Patent
Utility
US 5,219,482 · App. 07/817,227
Rust and haze inhibiting lubricating oil additive-reaction product of n-alkyl-maliimide and 5-amino-triazole
Inventors:
Joseph M. Russo, Benjamin J. Kaufman, Thomas F. DeRosa, Rodney L. Sung
Patented Case
View Patent ↗
Granted: Jun 15, 1993
Filed: Jan 6, 1992
Inventors
Joseph M. Russo
Benjamin J. Kaufman
Thomas F. DeRosa
Rodney L. Sung
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.