Granted Patent
Utility
US 5,707,979 · App. 08/495,977
Phosphinic acid derivatives, their preparation and their use
Inventors:
Anuschirwan Peyman, Wilhelm Stahl, Karl-Heinz Budt, Dieter Ruppert, Henning Schussler, Konrad Wagner
Patented Case
View Patent ↗
Granted: Jan 13, 1998
Filed: Jun 28, 1995
Inventors
Anuschirwan Peyman
Wilhelm Stahl
Karl-Heinz Budt
Dieter Ruppert
Henning Schussler
Konrad Wagner
Assignee (at issue)
Hoechst GmbH
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.