Granted Patent
Utility
US 4,666,992 · App. 06/902,535
Water soluble complex of a poly(vinylpyrrolidone) copolymer and D-threo-(1,1'-dihydroxy-1-p-nitrophenylisopropyl) dichloroacetamide
Inventor:
Eugene S. Barabas
Patented Case
View Patent ↗
Granted: May 19, 1987
Filed: Sep 2, 1986
Inventor
Eugene S. Barabas
Assignee (at issue)
GAF Corporation
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.