Granted Patent
Utility
US 4,777,198 · App. 07/052,927
Resin powder of unsaturated carboxyl monomer and sulfate or sulfonic salt
Inventor:
Mariano Salazar
Patented Case
View Patent ↗
Granted: Oct 11, 1988
Filed: May 22, 1987
Inventor
Mariano Salazar
Assignee (at issue)
THE GOODYEAR TIRE & RUBBER COMPANY
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.