Granted Patent
Utility
US 4,898,994 · App. 07/257,981
Process for making 3,5-dialkyl-4-hydroxybenzyl-substituted aromatics
Inventors:
Glen L. Livingston, John Borges, George L. Mina
Patented Case
View Patent ↗
Granted: Feb 6, 1990
Filed: Oct 14, 1988
Inventors
Glen L. Livingston
John Borges
George L. Mina
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.