Granted Patent
Utility
US 4,870,155 · App. 07/127,719
Novel poly (etherimide) compositions
Inventors:
Markus Matzner, Paul A. Winslow, Donald M. Papuga
Patented Case
View Patent ↗
Granted: Sep 26, 1989
Filed: Dec 2, 1987
Inventors
Markus Matzner
Paul A. Winslow
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.