Granted Patent
Utility
US 4,704,436 · App. 06/858,977
Water soluble complex of a poly(vinylpyrrolidone) copolymer and .alpha.-methyl-(2-methylpropyl)benzene acetic acid
Inventor:
Eugene S. Barabas
Patented Case
View Patent ↗
Granted: Nov 3, 1987
Filed: May 2, 1986
Inventor
Eugene S. Barabas
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.