US PATENT SUBCLASS 585 / 4
.~.~.~ And N containing

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

1  DF  PRODUCT BLEND, E.G., COMPOSITION, ETC., OR BLENDING PROCESS PER SE {5}
2  DF  .~ With nonhydrocarbon additive {1}
3  DF  .~.~ O containing {1}
4.~.~.~ And N containing {1}
5  DF  .~.~.~.~> Additive(s) aromatic

DEFINITION

Classification: 585/4

And N containing:

(under subclass 3) Subject matter wherein a nonhydrocarbon additive contains nitrogen.

(1) Note. The oxygen and nitrogen may be present in the same additive molecule or in different additive molecules.