Granted Patent
Utility
US 6,780,938 · App. 10/343,874
Reactor alloy of syndiotactic polystyrene having high impact resistance
Inventors:
Sung-Cheol Yoon, Xuequan Zhang, Jae Gon Lim, Hyun Joon Kim, Young Sub Lee
Patented Case
View Patent ↗
Granted: Aug 24, 2004
Filed: Feb 27, 2003
Inventors
Sung-Cheol Yoon
Xuequan Zhang
Jae Gon Lim
Hyun Joon Kim
Young Sub Lee
Assignee (at issue)
Samsung Atofina 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.