Granted Patent
Utility
US 4,771,101 · App. 07/064,637
Unsaturated polyesters colored with lignin
Inventors:
Wayne P. Pruett, John A. Hyatt, Samuel D. Hilbert
Patented Case
View Patent ↗
Granted: Sep 13, 1988
Filed: Jun 22, 1987
Inventors
Wayne P. Pruett
John A. Hyatt
Samuel D. Hilbert
Assignee (at issue)
EASTMAN KODAK 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.