Granted Patent
Utility
US 4,959,424 · App. 06/889,203
Amino-terminated poly(aryl ether ketones)
Inventors:
Markus Matzner, Donald M. Papuga
Patented Case
View Patent ↗
Granted: Sep 25, 1990
Filed: Jul 25, 1986
Inventors
Markus Matzner
Donald M. Papuga
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.