Granted Patent
Utility
US 4,612,309 · App. 06/664,063
Antisecretory bicyclic benzo-oxy heterocyclic ethers and thioethers
Inventors:
Donald E. Kuhla, Henry F. Campbell, William L. Studt, Kent W. Neuenschwander
Patented Case
View Patent ↗
Granted: Sep 16, 1986
Filed: Oct 23, 1984
Inventors
Donald E. Kuhla
Henry F. Campbell
William L. Studt
Kent W. Neuenschwander
Assignee (at issue)
William H. Rorer, 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.