US PATENT SUBCLASS 508 / 537
.~.~.~ One of the cations is aluminum or heavy metal

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}
536  DF  .~.~ Mixture of carboxylic acid salts having different cations {1}
537.~.~.~ One of the cations is aluminum or heavy metal

DEFINITION

Classification: 508/537

One of the cations is aluminum or heavy metal:

(under subclass 536) Compositions wherein heavy metal or aluminum is one of the cations.

(1) Note. Arsenic is considered a heavy metal.

(2) Note. Heavy metals are those whose specific gravity is greater than 4.0.