Granted Patent
Utility
US 6,031,049 · App. 09/059,019
Blends comprising a syndiotactic polystyrene and a polyphenylene ether
Inventors:
Shinji Chino, Akihiko Okada, Nobuyuki Satoh
Patented Case
View Patent ↗
Granted: Feb 29, 2000
Filed: Apr 13, 1998
Inventors
Shinji Chino
Akihiko Okada
Nobuyuki Satoh
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.