Granted Patent
Utility
US 4,760,152 · App. 07/020,840
Pyrrolidonyl acrylate block polymers
Inventors:
David J. Tracy, Mohamed M. Hashem, Fulvio J. Vara
Patented Case
View Patent ↗
Granted: Jul 26, 1988
Filed: Mar 2, 1987
Inventors
David J. Tracy
Mohamed M. Hashem
Fulvio J. Vara
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.