Granted Patent
Utility
US 6,566,488 · App. 10/097,749
Polyarylensulfide, polyarylensulfide resin composition, method for producing polyarylensulfide
Inventors:
Masaya Okamoto, Toru Bando
Patented Case
View Patent ↗
Granted: May 20, 2003
Filed: Mar 15, 2002
Inventors
Masaya Okamoto
Toru Bando
Assignees (at issue)
IDEMITSU KOSAN CO., LTD.
Idemitsu Petrochemical Co., Ltd.
PETROLEUM ENERGY CENTER
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.