Granted Patent
Utility
US 6,255,421 · App. 08/988,121
Non-aqueous, heterogeneous polymerization process and reaction product obtained thereby
Inventors:
Krystyna Plochocka, Jui-Chang Chuang, Jenn S. Shih
Patented Case
View Patent ↗
Granted: Jul 3, 2001
Filed: Dec 10, 1997
Inventors
Krystyna Plochocka
Jui-Chang Chuang
Jenn S. Shih
Assignee (at issue)
ISP INVESTMENTS LLC
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.