Granted Patent
Utility
US 6,706,786 · App. 10/244,167
Styrene resin composition and method of manufacturing the same, and method of manufacturing styrene resin molded products
Inventors:
Akihiko Okada, Takuma Aoyama
Patented Case
View Patent ↗
Granted: Mar 16, 2004
Filed: Sep 16, 2002
Inventors
Akihiko Okada
Takuma Aoyama
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.