Granted Patent
Utility
US 4,722,925 · App. 07/021,147
Bicyclic benzo-oxy heterocyclic ethers and thioethers pharmaceutical compositions and use
Inventors:
Donald E. Kuhla, Henry F. Campbell, William L. Studt, Kent W. Neuenschwander
Patented Case
View Patent ↗
Granted: Feb 2, 1988
Filed: Mar 3, 1987
Inventors
Donald E. Kuhla
Henry F. Campbell
William L. Studt
Kent W. Neuenschwander
Assignee (at issue)
Rorer Pharmaceutical Corporation
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.