Granted Patent
Utility
US 4,521,546 · App. 06/511,371
Graft copolymers from vinyl monomers and polyurethane oligomers and polyurethanes prepared therefrom
Inventors:
James M. O'Connor, Donald L. Lickei
Patented Case
View Patent ↗
Granted: Jun 4, 1985
Filed: Jul 6, 1983
Inventors
James M. O'Connor
Donald L. Lickei
Assignee (at issue)
Olin 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.