Granted Patent
Utility
US 5,686,459 · App. 08/606,811
Dioxopyrrolo pyrrole derivatives
Inventors:
Francois Diederich, Ulrike Obst, Sabine Wallbaum, Lutz Weber
Patented Case
View Patent ↗
Granted: Nov 11, 1997
Filed: Feb 26, 1996
Inventors
Francois Diederich
Ulrike Obst
Sabine Wallbaum
Lutz Weber
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.