Granted Patent
Utility
US 4,822,895 · App. 06/703,828
3-aminoazetidine, its salts and intermediates of synthesis
Inventors:
Dino Nisato, Marco Frigerio
Patented Case
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Granted: Apr 18, 1989
Filed: Feb 21, 1985
Inventors
Dino Nisato
Marco Frigerio
Assignee (at issue)
Sanofi
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.