Granted Patent
Utility
US 5,084,530 · App. 07/562,640
Poly(aryl ether sulfone)-poly(aryl ether ketone) block copolymers
Inventors:
Markus Matzner, James H. Botkin, Paul A. Winslow
Patented Case
View Patent ↗
Granted: Jan 28, 1992
Filed: Aug 3, 1990
Inventors
Markus Matzner
James H. Botkin
Paul A. Winslow
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.