Granted Patent
Utility
US 4,792,616 · App. 06/853,113
Diaryl ethers
Inventors:
Paul Winternitz, Ren/e/ Zurfl/u/ h
Patented Case
View Patent ↗
Granted: Dec 20, 1988
Filed: Apr 17, 1986
Inventors
Paul Winternitz
Ren/e/ Zurfl/u/ h
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.