US PATENT SUBCLASS 508 / 146
.~.~ With heterocyclic ring compound that has ring sulfur or has chalcogen double bonded to heterocyclic ring carbon as additional component or surface-treating agent; a heterocyclic ring is one having as ring members only carbon and at least one hetero atom selected from chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) and nitrogen (e.g., thiadiazoles, cyclic carbonates, etc.)

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}
136  DF  .~ Silicon dioxide, silicic acid, orthosilicate, or metasilicate, including surface-treated (e.g., clays, onium clays, estersils, etc.) {12}
146.~.~ With heterocyclic ring compound that has ring sulfur or has chalcogen double bonded to heterocyclic ring carbon as additional component or surface-treating agent; a heterocyclic ring is one having as ring members only carbon and at least one hetero atom selected from chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) and nitrogen (e.g., thiadiazoles, cyclic carbonates, etc.)

DEFINITION

Classification: 508/146

With heterocyclic ring compound that has ring sulfur or has chalcogen double bonded to heterocyclic ring carbon as additional component or surface-treating agent; a heterocyclic ring is one having as ring members only carbon and at least one hetero atom selected from chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) and nitrogen (e.g., thiadiazoles, cyclic carbonates, etc.):

(under subclass 136) Compositions which contain, in addition to the silicon dioxide, silicic acid, orthosilicate, or metasilicate, a compound which has a heterocyclic ring having ring sulfur or having chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) double bonded to hetero ring carbon; the compound may be present as an additional component or as a surface-treating agent for the silicon dioxide, silicic acid, orthosilicate, or metasilicate.