US PATENT SUBCLASS 508 / 269
.~.~.~ Plural hetero atoms in the hetero ring (e.g., pyrazoles, benzimidazoles, etc.)

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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}
243  DF  .~ Heterocyclic ring compound; a heterocyclic ring is one having as ring members only carbon and at least one hetero atom selected from nitrogen and chalcogen (i.e., oxygen, sulfur, selenium, or tellurium) {4}
268  DF  .~.~ The hetero ring contains five members including nitrogen and carbon (e.g., polyvinylpyrrolidone, etc.) {4}
269.~.~.~ Plural hetero atoms in the hetero ring (e.g., pyrazoles, benzimidazoles, etc.) {3}
270  DF  .~.~.~.~> Chalcogen in the hetero ring (e.g., benzoxazoles, etc.) {3}
279  DF  .~.~.~.~> Three or four nitrogens in the hetero ring (e.g., 1,2,4-triazole, tetrazole, etc.) {1}
283  DF  .~.~.~.~> The hetero ring is a monocyclic 1,3-diazole or a monocyclic hydrogenated 1,3-diazole {3}

DEFINITION

Classification: 508/269

Plural hetero atoms in the hetero ring (e.g., pyrazoles, benzimidazoles, etc.):

(under subclass 268) Compositions wherein no more than three ring members of the hetero ring are carbons.

(1) Note. An example of a component provided for herein is [figure]