Granted Patent
Utility
US 5,449,715 · App. 08/091,809
Colorless, non-toxic, stabilized aqueous solution of a C1-C5 alkyl vinyl ether and maleic acid copolymers
Inventors:
Krystyna Plochocka, Jui-Chang Chuang
Patented Case
View Patent ↗
Granted: Sep 12, 1995
Filed: Jul 15, 1993
Inventors
Krystyna Plochocka
Jui-Chang Chuang
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.