Granted Patent
Utility
US 4,876,342 · App. 07/199,211
Oxazine compounds substituted by one or more basic groups and preparation thereof
Inventor:
Reinhard Pedrazzi
Patented Case
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Granted: Oct 24, 1989
Filed: May 26, 1988
Inventor
Reinhard Pedrazzi
Assignee (at issue)
Sandoz AG
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.