US PATENT SUBCLASS 508 / 152
.~ Elemental sulfur, selenium, or tellurium

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}
152.~ Elemental sulfur, selenium, or tellurium {1}
153  DF  .~.~> With compound containing nitrogen, sulfur, phosphorus, boron, or halogen

DEFINITION

Classification: 508/152

Elemental sulfur, selenium, or tellurium:

(under subclass 110) Compositions which contain elemental sulfur, elemental selenium, or elemental tellurium.

(1) Note. The elemental sulfur must be elemental sulfur that is added to the composition. Mineral oils, etc. that naturally contain a small amount of elemental sulfur do not meet the requirement of this subclass.