Granted Patent
Utility
US 6,583,258 · App. 10/007,346
Salts of organic phosphates as catalysts for melt polycarbonate
Inventors:
John Patrick Lemmon, Ronald James Wroczynski
Patented Case
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Granted: Jun 24, 2003
Filed: Oct 25, 2001
Inventors
John Patrick Lemmon
Ronald James Wroczynski
Assignee (at issue)
General Electric 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.