US PATENT SUBCLASS 436 / 116
.~ Oxides of nitrogen

Current as of: June, 1999
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436 /   HD   CHEMISTRY: ANALYTICAL AND IMMUNOLOGICAL TESTING

106  DF  NITROGEN CONTAINING {7}
116.~ Oxides of nitrogen {2}
117  DF  .~.~> Only nitrogen dioxide
118  DF  .~.~> Both nitrogen oxide and dioxide

DEFINITION

Classification: 436/116

Oxides of nitrogen:

(under subclass 106) Subject matter in which the specie to be tested is composed solely of nitrogen and oxygen.