US PATENT SUBCLASS 252 / 188.24
.~.~.~.~.~ Contains nitrogen

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

188.1  DF  REDUCTIVE BLEACHANT, DEOXIDANT, REDUCTANT, OR GENERATIVE {4}
188.2  DF  .~ Sulfur containing reductant, bleachant, deoxidant, or generative {1}
188.21  DF  .~.~ Sulfite {1}
188.22  DF  .~.~.~ Hydrosulfite (dithionite) {1}
188.23  DF  .~.~.~.~ With organic additive {1}
188.24.~.~.~.~.~ Contains nitrogen

DEFINITION

Classification: 252/188.24

Contains nitrogen:

(under subclass 188.23) Composition which contains either an organic or inorganic nitrogen containing additive, e.g., a reducing composition which contains an aqueous dispersion of sodium dithionite (also known as hydrosulfites or hyposulfites) and ammonium chloride as a solubility suppressant, etc.