Granted Patent
Utility
US 4,328,239 · App. 06/236,765
8-Aminoalkylpsoralens
Inventor:
Kurt D. Kaufman
Patented Case
View Patent ↗
Granted: May 4, 1982
Filed: Feb 23, 1981
Inventor
Kurt D. Kaufman
Assignee (at issue)
Elder Pharmaceuticals Ltd.
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.