US PATENT SUBCLASS 987 / 232
.~.~ Containing the structure P-(O-unsubstituted alkyl) wherein all of the O atoms in the molecule which are single bonded to the P atom are bound directly to carbon radicals containing only carbon and hydrogen atoms (9/11)

Current as of: June, 1999
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987 /   HD   ORGANIC COMPOUNDS CONTAINING A Bi, Sb, As, OR P ATOM OR CONTAINING A METAL ATOM OF THE 6TH TO 8TH GROUP OF THE PERIODIC SYSTEM

30  DF  PHOSPHORUS COMPOUNDS (9/02; 9/06) {15}
224  DF  .~ P is pentavalent and contains the structure P-(O-C) or P-(O-Z) where Z indicates an atom other than H (9/09; 9/09A1) {6}
232.~.~ Containing the structure P-(O-unsubstituted alkyl) wherein all of the O atoms in the molecule which are single bonded to the P atom are bound directly to carbon radicals containing only carbon and hydrogen atoms (9/11)

DEFINITION

Classification: 987/232

Containing the structure P-(O-unsubstituted alkyl) wherein all of the O atoms in the molecule which are single bonded to the P atom are bound directly to carbon radicals containing

only carbon and hydrogen atoms (9/11):

(under subclass 224) Subject matter wherein all of the carbon atoms which are directly bonded to the oxygen atoms which are directly bonded to the P atom are either substituted solely by hydrogen atoms or are part of a moiety containing only carbon and hydrogen atoms.

(1) Note. This subclass differs from all other subclasses under subclass 224 in that it is proper for those subclasses to have a single one of the required entities. This subclass on the other hand requires that ALL of the groups be presented in the required format.