US PATENT SUBCLASS 514 / 638
.~.~ Nitrogen double bonded directly to carbon


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}
638.~.~ Nitrogen double bonded directly to carbon {3}
639  DF  .~.~.~> Hydrazones (i.e., C=N-N)
640  DF  .~.~.~> Oximes (i.e., C=N-O-)
641  DF  .~.~.~> Aldimines or ketimines which contain a benzene ring (i.e., RC=N wherein R is C or H)


DEFINITION

Classification: 514/638

Nitrogen double bonded directly to carbon:

(under subclass 579) Subject matter containing compounds which are characterized by the presence of the grouping C=N.