US PATENT SUBCLASS 514 / 634
.~.~.~ Guanidines (i.e., N=C(-N)-N)


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}
631  DF  .~.~ Amidines (i.e., N=C-N) {5}
634.~.~.~ Guanidines (i.e., N=C(-N)-N) {1}
635  DF  .~.~.~.~> Biguanides (i.e., N=C(-N)-N(N-)C=N)


DEFINITION

Classification: 514/634

Guanidines (i.e., N=C(-N)-N:

(under subclass 631) Subject matter which includes guanidines, containing the grouping NN.