US PATENT SUBCLASS 585 / 13
.~.~ Mineral oil (petroleum) fraction


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}
7  DF  .~ Component of indefinite molecular weight greater than 150 {4}
13.~.~ Mineral oil (petroleum) fraction


DEFINITION

Classification: 585/13

Mineral oil (petroleum) fraction:

(under subclass 7) Subject matter wherein the component is a mineral oil fraction.