Granted Patent
Utility
US 4,426,478 · App. 06/439,015
Branched polyester coating compositions
Inventors:
Paul R. Noyes, Eugene G. Sommerfeld
Patented Case
View Patent ↗
Granted: Jan 17, 1984
Filed: Nov 3, 1982
Inventors
Paul R. Noyes
Eugene G. Sommerfeld
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.