Granted Patent
Utility
US 4,465,864 · App. 06/404,543
Process of hydroxylation of an aromatic carbonyl compound
Inventors:
Geoffrey Kenneth Cooper, Lewis G. Harruff
Patented Case
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Granted: Aug 14, 1984
Filed: Aug 2, 1982
Inventors
Geoffrey Kenneth Cooper
Lewis G. Harruff
Assignee (at issue)
International Telephone and Telegraph Corporation
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.