Granted Patent
Utility
US 5,401,883 · App. 08/088,462
Process for preparing 2,6-di-tertiarybutyl-4-mercaptophenol and 4,4'-isopropylidenedithio-bis-(2,6-di-tertiarybutylphenol)
Inventors:
F. Mark Laskovics, Kim G. Bargeron
Patented Case
View Patent ↗
Granted: Mar 28, 1995
Filed: Jul 7, 1993
Inventors
F. Mark Laskovics
Kim G. Bargeron
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.