Granted Patent
Utility
US 4,526,609 · App. 06/380,654
Phenoxy phenoxy propionic hydrazides
Inventors:
Georg Frater, Milos Suchy, Jean Wenger, Paul Winternitz
Patented Case
View Patent ↗
Granted: Jul 2, 1985
Filed: May 21, 1982
Inventors
Georg Frater
Milos Suchy
Jean Wenger
Paul Winternitz
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.