Granted Patent
Utility
US 4,486,557 · App. 06/555,304
Organic polyisocyanate-liquid aromatic epoxide-lignin adhesive binder compositions
Inventors:
James M. Gaul, Tinh Nguyen
Patented Case
View Patent ↗
Granted: Dec 4, 1984
Filed: Nov 25, 1983
Inventors
James M. Gaul
Tinh Nguyen
Assignee (at issue)
Atlantic Richfield 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.