Granted Patent
Utility
US 5,013,863 · App. 07/378,887
Substituted propane-phosphinic acid compounds
Inventors:
Eric K. Baylis, Helmut Bittiger, Wolfgang Froostl, Roger Graham Hall, Ludwig Maier, Stuart J. Mickel, Hans-Rudolf Olpe
Patented Case
View Patent ↗
Granted: May 7, 1991
Filed: Jul 12, 1989
Inventors
Eric K. Baylis
Helmut Bittiger
Wolfgang Froostl
Roger Graham Hall
Ludwig Maier
Stuart J. Mickel
Hans-Rudolf Olpe
Assignee (at issue)
Ciba-Geigy
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.