US PATENT SUBCLASS 426 / 260
.~ By nitrogen compound

Current as of: June, 1999
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426 /   HD   FOOD OR EDIBLE MATERIAL: PROCESSES, COMPOSITIONS, AND PRODUCTS

253  DF  REMOVING NATURAL COLOR BY CHEMICAL REACTION, E.G., BLEACHING, ETC. {7}
260.~ By nitrogen compound

DEFINITION

Classification: 426/260

(under subclass 253) Processes in which the color remover contains a nitrogen atom.