Granted Patent
Utility
US 4,977,236 · App. 07/449,289
Terminated copoly(arylene sulfide) of low molecular weight
Inventors:
David R. Fagerburg, Joseph J. Watkins, Paul B. Lawrence, Mark Rule
Patented Case
View Patent ↗
Granted: Dec 11, 1990
Filed: Dec 5, 1989
Inventors
David R. Fagerburg
Joseph J. Watkins
Paul B. Lawrence
Mark Rule
Assignee (at issue)
EASTMAN KODAK COMPANY
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.