Granted Patent
Utility
US 4,228,295 · App. 06/047,199
Novel cycloheptathiophene intermediates for the synthesis of biotin
Inventors:
Pasquale N. Confalone, Elizabeth D. Lollar, Giacomo Pizzolato, Milan R. Uskokovic
Patented Case
View Patent ↗
Granted: Oct 14, 1980
Filed: Jun 11, 1979
Inventors
Pasquale N. Confalone
Elizabeth D. Lollar
Giacomo Pizzolato
Milan R. Uskokovic
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.