US PATENT SUBCLASS 252 / 400.21
.~.~.~.~.~ Nitrogen or sulfur in phosphorus compound

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

380  DF  PRESERVATIVE AGENTS {3}
397  DF  .~ Anti-oxidants or chemical change inhibitants {2}
399  DF  .~.~ Organic compound containing {8}
400.1  DF  .~.~.~ Component inorganic or organic comprising element other than C,H,O,N,S, and halogen {8}
400.2  DF  .~.~.~.~ Phosphorus containing {3}
400.21.~.~.~.~.~ Nitrogen or sulfur in phosphorus compound {1}
400.22  DF  .~.~.~.~.~.~> Pentavalent P, but not fully oxygenated

DEFINITION

Classification: 252/400.21

Nitrogen or sulfur in phosphorus compound:

(under subclass 400.2) Compositions in which the compound which includes an atom of phosphorus also includes an atom of the element nitrogen, or the element sulfur.