Granted Patent
Utility
US 5,733,962 · App. 08/632,167
Polyarylene sulfide resin composition
Inventors:
Yasuhiro Osako, Tomoyoshi Murakami
Patented Case
View Patent ↗
Granted: Mar 31, 1998
Filed: Apr 15, 1996
Inventors
Yasuhiro Osako
Tomoyoshi Murakami
Assignee (at issue)
Idemitsu Petrochemical Co., Ltd.
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.