Granted Patent
Utility
US 4,301,267 · App. 06/181,336
Ultraviolet light stable copolymer compositions comprising monomers which are .alpha.,62 -unsaturated dicarboxylic acid half-esters of 2-hydroxy, alkoxy, methylolbenzophenones and styrene-butadiene comonomers
Inventors:
Eugene S. Barabas, Prakash Mallya, Stanley J. Gromelski, Jr.
Patented Case
View Patent ↗
Granted: Nov 17, 1981
Filed: Aug 26, 1980
Inventors
Eugene S. Barabas
Prakash Mallya
Stanley J. Gromelski, Jr.
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.