Granted Patent
Utility
US 4,405,528 · App. 06/385,610
Method of preparing 4-(.alpha.-alkyl-.alpha.-cyano-methyl)2,6-di-substituted phenols
Inventor:
Charles R. Everly
Patented Case
View Patent ↗
Granted: Sep 20, 1983
Filed: Jun 7, 1982
Inventor
Charles R. Everly
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.