Granted Patent
Utility
US 4,908,425 · App. 06/747,188
Chain-extended poly(aryl ether ketones)
Inventors:
Lloyd M. Robeson, Paul A. Winslow, Markus Matzner, James E. Harris, Louis M. Maresca
Patented Case
View Patent ↗
Granted: Mar 13, 1990
Filed: Jun 21, 1985
Inventors
Lloyd M. Robeson
Paul A. Winslow
Markus Matzner
James E. Harris
Louis M. Maresca
Assignee (at issue)
Amoco 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.