Granted Patent
Utility
US 5,571,551 · App. 08/200,797
High molecular weight gallotannins as a stain-inhibiting agent for food dyes
Inventors:
Robert W. Fusi, II, Gary H. Kestenbaum, Sigmund L. Klug
Patented Case
View Patent ↗
Granted: Nov 5, 1996
Filed: Feb 23, 1994
Inventors
Robert W. Fusi, II
Gary H. Kestenbaum
Sigmund L. Klug
Assignee (at issue)
KRAFT FOODS HOLDINGS, INC.
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.