Granted Patent
Utility
US 4,485,051 · App. 06/515,660
Preparation of 4-(.alpha.-hydrocarbyl-.alpha.-cyanomethyl)-2,6-di-substituted phenols
Inventors:
Charles R. Everly, Jerry M. Roper
Patented Case
View Patent ↗
Granted: Nov 27, 1984
Filed: Jul 20, 1983
Inventors
Charles R. Everly
Jerry M. Roper
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.