Granted Patent
Utility
US 4,624,997 · App. 06/655,584
Article molded from a blend of a poly(aryl ether ketone) and a poly(aryl ether sulfone)
Inventors:
Lloyd M. Robeson, James E. Harris
Patented Case
View Patent ↗
Granted: Nov 25, 1986
Filed: Sep 28, 1984
Inventors
Lloyd M. Robeson
James E. Harris
Assignee (at issue)
Union Carbide 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.