Granted Patent
Utility
US 4,772,363 · App. 07/003,115
Process for preparing 2,6-di-tertiarybutyl-4-mercaptophenol by electrocatalysis
Inventor:
Richard M. Van Effen
Patented Case
View Patent ↗
Granted: Sep 20, 1988
Filed: Jan 14, 1987
Inventor
Richard M. Van Effen
Assignee (at issue)
Merrell Dow Pharmaceuticals 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.