Granted Patent
Utility
US 4,972,031 · App. 07/253,595
Plastic moulding composition comprising an uncured or partly cured thermoset resin precursor and a polyarylsulphone
Inventors:
Martin Choate, Patrick Terence McGrail, Mark S. Sefton, Jeffrey Thomas Carter
Patented Case
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Granted: Nov 20, 1990
Filed: Oct 5, 1988
Inventors
Martin Choate
Patrick Terence McGrail
Mark S. Sefton
Jeffrey Thomas Carter
Assignee (at issue)
IMPERIAL CHEMICAL INDUSTRIES 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.