Granted Patent
Utility
US 5,705,496 · App. 08/522,386
Crystalline benzathine salt of cefonicid and its preparation
Inventor:
Theodore John Polansky
Patented Case
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Granted: Jan 6, 1998
Filed: Sep 25, 1995
Inventor
Theodore John Polansky
Assignee (at issue)
SmithKline Beecham Limited
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.