Granted Patent
Utility
US 4,483,800 · App. 06/510,886
Preparation of 4-(.alpha.-alkyl-.alpha.-cyano-methyl)-2,6-di-substituted phenols
Inventors:
Charles R. Everly, Gene C. Robinson
Patented Case
View Patent ↗
Granted: Nov 20, 1984
Filed: Jul 5, 1983
Inventors
Charles R. Everly
Gene C. Robinson
Assignee (at issue)
Ethyl 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.