Granted Patent
Utility
US 4,851,585 · App. 07/119,879
Vitamin E intermediates
Inventors:
Richard Barner, Josef Hubscher
Patented Case
View Patent ↗
Granted: Jul 25, 1989
Filed: Nov 12, 1987
Inventors
Richard Barner
Josef Hubscher
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.