Granted Patent
Utility
US 5,212,259 · App. 07/550,098
Miscible blends of imide containing polymers with poly(aryl sulfones)
Inventors:
James E. Harris, Gary T. Brooks
Patented Case
View Patent ↗
Granted: May 18, 1993
Filed: Jul 9, 1990
Inventors
James E. Harris
Gary T. Brooks
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.