US PATENT SUBCLASS 514 / 594
.~.~.~ Additional C=O bonded directly to urea nitrogen

Current as of: June, 1999
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514 /   HD   DRUG, BIO-AFFECTING AND BODY TREATING COMPOSITIONS

1  DF  DESIGNATED ORGANIC ACTIVE INGREDIENT CONTAINING (DOAI) {29}
579  DF  .~ Nitrogen containing other than solely as a nitrogen in an inorganic ion of an addition salt, a nitro or a nitroso DOAI {22}
588  DF  .~.~ Ureas (i.e., N-C(=O)-N) {6}
594.~.~.~ Additional C=O bonded directly to urea nitrogen

DEFINITION

Classification: 514/594

Additional C=O bonded directly to urea nitrogen:

(under subclass 558) Subject matter wherein a urea nitrogen is directly bonded to a C=O group.

(1) Note. This subclass contains, for example: [figure] [caption], etc.