Granted Patent
Utility
US 4,356,330 · App. 06/284,905
Method of decolorizing mixtures of T-butyl alkylphenols with N-(2-hydroxyethyl)oxazolidine
Inventors:
Michael Cuscurida, George P. Speranza
Patented Case
View Patent ↗
Granted: Oct 26, 1982
Filed: Jul 20, 1981
Inventors
Michael Cuscurida
George P. Speranza
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.