Granted Patent
Utility
US 4,282,144 · App. 06/044,446
Azo dyes derived from 5-membered heterocyclic amines and aromatic amine couplers containing sulfo groups, or salts thereof
Inventors:
Max A. Weaver, Clarence A. Coates, Jr., Jean Carroll Fleischer
Patented Case
View Patent ↗
Granted: Aug 4, 1981
Filed: Jun 1, 1979
Inventors
Max A. Weaver
Clarence A. Coates, Jr.
Jean Carroll Fleischer
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.