Granted Patent
Utility
US 4,403,092 · App. 06/443,784
Polyesters containing copolymerized, anthraquinone colorant compounds containing sulfonamido groups
Inventors:
Thomas G. Davis, Max A. Weaver, Ralph R. Giles
Patented Case
View Patent ↗
Granted: Sep 6, 1983
Filed: Nov 22, 1982
Inventors
Thomas G. Davis
Max A. Weaver
Ralph R. Giles
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.