Granted Patent
Utility
US 6,828,270 · App. 09/678,171
Supported catalyst for producing syndiotactic styrenic polymer with high productivity and significantly reduced reactor fouling
Inventors:
Xuequan Zhang, Sung-Cheol Yoon, Jae Gon Lim, Young Sub Lee
Patented Case
View Patent ↗
Granted: Dec 7, 2004
Filed: Oct 2, 2000
Inventors
Xuequan Zhang
Sung-Cheol Yoon
Jae Gon Lim
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.