Granted Patent
Utility
US 4,394,493 · App. 06/307,211
Crosslinkable poly(oxyalkylene) graft copolymers
Inventors:
David Joseph Bartkovitz, George H. Greene
Patented Case
View Patent ↗
Granted: Jul 19, 1983
Filed: Sep 30, 1981
Inventors
David Joseph Bartkovitz
George H. Greene
Assignee (at issue)
Union Carbide 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.