Granted Patent
Utility
US 5,214,038 · App. 07/684,758
1-(pyrido[3,4-b]-1,4-oxazinyl-4-yl)-1H-indoles and intermediates for the preparation thereof
Inventors:
Richard C. Effland, Larry Davis, Gordon E. Olsen
Patented Case
View Patent ↗
Granted: May 25, 1993
Filed: Apr 15, 1991
Inventors
Richard C. Effland
Larry Davis
Gordon E. Olsen
Assignee (at issue)
Hoechst Roussel Pharmaceuticals
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.