US PATENT SUBCLASS 252 / 400.2
.~.~.~.~ Phosphorus containing

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.~.~.~.~ Phosphorus containing {3}
400.21  DF  .~.~.~.~.~> Nitrogen or sulfur in phosphorus compound {1}
400.23  DF  .~.~.~.~.~> Pentavalent P, but not fully oxygenated
400.24  DF  .~.~.~.~.~> Trivalent P (e.g., phosphorous acid, phosphites, etc.)

DEFINITION

Classification: 252/400.2

Phosphorus containing:

(under subclass 400.1) Compositions which includes a compound containing an atom of the element phosphorus.

(1) Note. This subclass is the location for phosphoric and polyphosphoric acids and ester and other derivatives thereof.