US PATENT SUBCLASS 508 / 538
.~.~ Naphthenic acid or salt thereof

Current as of: June, 1999
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508 /   HD   SOLID ANTI-FRICTION DEVICES, MATERIALS THEREFOR, LUBRICANT OR SEPARATE COMPOSITIONS FOR MOVING SOLID SURFACES, AND MISCELLANEOUS MINERAL OIL COMPOSITIONS

110  DF  LUBRICANTS OR SEPARANTS FOR MOVING SOLID SURFACES AND MISCELLANEOUS MINERAL OIL COMPOSITIONS (E.G., WATER CONTAINING, ETC.) {53}
459  DF  .~ Organic -C(=O)O- compound {19}
538.~.~ Naphthenic acid or salt thereof

DEFINITION

Classification: 508/538

Naphthenic acid or salt thereof:

(under subclass 459) Compositions which contain a salt of a naphthenic acid or a naphthenic acid, per se.