US PATENT SUBCLASS 507 / 264
.~.~.~ Organic component is a phenol

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}
263  DF  .~.~ Organic component contains a carbocyclic group (e.g., cycloaliphatic, aromatic ring, tall oil, etc.) {1}
264.~.~.~ Organic component is a phenol

DEFINITION

Classification: 507/264

Organic component is a phenol:

(under subclass 263) Compositions wherein the organic component contains a hydroxy group bonded directly to a benzene ring which benzene ring may be substituted or unsubstituted and may be part of a polycyclo ring system.

(1) Note. Included in this subclass are catechol, resorcinol, etc.