Granted Patent
Utility
US 4,994,512 · App. 07/345,277
Poly-methine compounds, condensation polymer having a poly-methine compound admixed therein and shaped articles produced therefrom
Inventors:
Max A. Weaver, Clarence A. Coates, Jr., Wayne P. Pruett, Samuel D. Hilbert
Patented Case
View Patent ↗
Granted: Feb 19, 1991
Filed: May 1, 1989
Inventors
Max A. Weaver
Clarence A. Coates, Jr.
Wayne P. Pruett
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.