US PATENT SUBCLASS 252 / 389.2
.~.~.~.~ Phosphorus containing

Current as of: June, 1999
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252 /   HD   COMPOSITIONS

380  DF  PRESERVATIVE AGENTS {3}
387  DF  .~ Anti-corrosion {1}
388  DF  .~.~ Organic compound containing {6}
389.1  DF  .~.~.~ Component inorganic or organic comprising element other than C,H,O,N,S, and halogen {10}
389.2.~.~.~.~ Phosphorus containing {3}
389.21  DF  .~.~.~.~.~> Nitrogen and/or sulfur in phosphorus compound {1}
389.23  DF  .~.~.~.~.~> Pentavalent P, except H(n+2)PnO(3n+1)
389.24  DF  .~.~.~.~.~> Trivalent P (e.g., phosphorus acid, phosphites, etc.)

DEFINITION

Classification: 252/389.2

Phosphorus containing:

(under subclass 389.1) 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 esters and other derivatives thereof.