US PATENT SUBCLASS 507 / 232
.~.~ Organic component is asphalt or a component or derivative thereof

Current as of: June, 1999
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507 /   HD   EARTH BORING, WELL TREATING, AND OIL FIELD CHEMISTRY

200  DF  WELL TREATING {4}
203  DF  .~ Contains organic component {17}
232.~.~ Organic component is asphalt or a component or derivative thereof

DEFINITION

Classification: 507/232

Organic component is asphalt or a component or derivative thereof:

(under subclass 203) Compositions wherein the organic component is asphalt or is a component or derivative of the asphalt.

(1) Note. This subclass provides for Gilsonite TM which is a trade name for an asphaltite, manjak, bitumen, brown asphalt, asphaltenes, maltenes, macadam, etc.