US PATENT SUBCLASS 252 / 188.23
.~.~.~.~ With organic additive

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.~.~.~.~ With organic additive {1}
188.24  DF  .~.~.~.~.~> Contains nitrogen

DEFINITION

Classification: 252/188.23

With organic additive:

(under subclass 188.22) Composition which contains an organic additive e.g., a reducing composition comprised of sodium

dithionite and zinc hydroxymethanesulfinate, etc.