US PATENT SUBCLASS 585 / 725
.~.~.~.~.~ B-, N-, or P-containing

Current as of: June, 1999
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585 /   HD   CHEMISTRY OF HYDROCARBON COMPOUNDS

700  DF  SATURATED COMPOUND SYNTHESIS {11}
709  DF  .~ By condensation of a paraffin molecule with an olefin-acting molecule, e.g., alkylation, etc. {11}
721  DF  .~.~ Using extraneous nonhydrocarbon agent {6}
723  DF  .~.~.~ HF {1}
724  DF  .~.~.~.~ With additional nonhydrocarbon agent {1}
725.~.~.~.~.~ B-, N-, or P-containing

DEFINITION

Classification: 585/725

B-, N-, or P-containing:

(under subclass 724) Subject matter wherein the additional agent comprises boron, nitrogen, or phosphorus in elemental or combined form.

(1) Note. This subclass contains, for example, alkylation processes wherein the catalyst comprises HF + BF3.