Granted Patent
Utility
US 5,173,524 · App. 07/680,735
Conductive polysulfone resine composition and high-heat-resistant, conductive semi-conductor article molded from same
Inventor:
Takashi Satoh
Patented Case
View Patent ↗
Granted: Dec 22, 1992
Filed: Apr 5, 1991
Inventor
Takashi Satoh
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.