Granted Patent
Utility
US 5,256,743 · App. 07/654,464
Poly(arylene thioether) resin compositions and extruded products thereof
Inventors:
Toshio Enoki, Yasuo Sakaguchi
Patented Case
View Patent ↗
Granted: Oct 26, 1993
Filed: Feb 13, 1991
Inventors
Toshio Enoki
Yasuo Sakaguchi
Assignee (at issue)
Kureha Kagaku Kogyo K.K.
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.