Granted Patent
Utility
US 5,487,817 · App. 08/185,571
Process for tocopherols and sterols from natural sources
Inventor:
Christian Fizet
Patented Case
View Patent ↗
Granted: Jan 30, 1996
Filed: Jan 21, 1994
Inventor
Christian Fizet
Assignee (at issue)
HOFFMANN-LA ROCHE 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.