Granted Patent
Utility
US 6,559,249 · App. 09/801,198
Catalyst for producing an ultrahigh molecular weight polyethylene (UHWMP) and method for producing an UHWMP using the same
Inventors:
Chun-Byoung Yang, Ho-Sik Chang, Weon Lee
Patented Case
View Patent ↗
Granted: May 6, 2003
Filed: Mar 6, 2001
Inventors
Chun-Byoung Yang
Ho-Sik Chang
Weon Lee
Assignee (at issue)
Samsung General Chemicals, 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.