Granted Patent
Utility
US 4,859,762 · App. 07/308,924
Process for the preparation of copoly(arylene sulfide)
Inventors:
Mark Rule, David R. Fagerburg, Joseph J. Watkins
Patented Case
View Patent ↗
Granted: Aug 22, 1989
Filed: Feb 13, 1989
Inventors
Mark Rule
David R. Fagerburg
Joseph J. Watkins
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.