Granted Patent
Utility
US 5,658,897 · App. 08/629,283
Cyclopentane(ene) heptanoic or cyclopentane(ene) heptenoic acid, 2-hydrocarbyl phosphinyloxyalkyl or phosphonamidoalkyl as therapeutic agents
Inventor:
Robert M. Burk
Patented Case
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Granted: Aug 19, 1997
Filed: Apr 8, 1996
Inventor
Robert M. Burk
Assignee (at issue)
Allergan, 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.