Granted Patent
Utility
US 5,409,929 · App. 08/028,774
Hydroisoindolines and hydroisoquinolines as psychotropic drugs
Inventor:
Engelbert Ciganek
Patented Case
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Granted: Apr 25, 1995
Filed: Feb 17, 1993
Inventor
Engelbert Ciganek
Assignee (at issue)
The DuPont Merck Pharmaceutical Company
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.