US PATENT SUBCLASS 8 / 696
.~.~ Carbonyl bonded directly to nitrogen

Current as of: June, 1999
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8 /   HD   BLEACHING AND DYEING; FLUID TREATMENT AND CHEMICAL MODIFICATION OF TEXTILES AND FIBERS

636  DF  DYE OR POTENTIAL DYE COMPOSITION, ADDITIVE, TREATMENT, PROCESS, PRODUCT, OR ANCILLARY DYE OPERATION {12}
662  DF  .~ Azo, acridone, or quinone dye {15}
696.~.~ Carbonyl bonded directly to nitrogen

DEFINITION

Classification: 8/696

Carbonyl bonded directly to nitrogen:

(under subclass 662) Subject matter wherein the dye contains a -C(=O)-N- group.

CROSS-REFERENCE ART COLLECTIONS

The following subclasses are collections of published disclosures pertaining to various specified aspects of the dye art which aspects do not form appropriate bases for subclasses in the foregoing classification (i.e., subclasses 400 - 696), wherein original copies of patents are placed on another basis. These subclasses may be of further assistance to the searcher, either as a starting point in searching this class or as an indication of further related fields of search inside or outside the class. Thus, there is here provided a further path of access for retrieval of a limited number of types of disclosures.

Disclosures are placed in these subclasses for their value as references and as leads to appropriate main or secondary fields of search, without regard to their original classification or their claimed subject matter.

The disclosures found in the following subclasses are examples, only, of the indicated subject matter, and in no instance do they represent the entire extent of the prior art.