Granted Patent
Utility
US 4,486,508 · App. 06/535,343
Laminates from an adhesive formed by a system containing an hydroxyl-terminated polymer, an isocyanate-terminated urethane and a polyisocyanate which is a cross-linking agent
Inventors:
James E. Coughlin, Eugene G. Sommerfeld, Clifford H. Strolle
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Sep 23, 1983
Inventors
James E. Coughlin
Eugene G. Sommerfeld
Clifford H. Strolle
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.