US PATENT SUBCLASS 508 / 281
.~.~.~.~.~.~ Chalcogen or nitrogen attached to the hetero ring directly or indirectly by acyclic nonionic bonding (e.g., methylene bis-benzotriazoles, 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}
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  DF  .~.~.~ Plural hetero atoms in the hetero ring (e.g., pyrazoles, benzimidazoles, etc.) {3}
279  DF  .~.~.~.~ Three or four nitrogens in the hetero ring (e.g., 1,2,4-triazole, tetrazole, etc.) {1}
280  DF  .~.~.~.~.~ Polycyclo ring system which contains the hetero ring as one of the cyclos (e.g., alkyl benzotriazoles, etc.) {2}
281.~.~.~.~.~.~ Chalcogen or nitrogen attached to the hetero ring directly or indirectly by acyclic nonionic bonding (e.g., methylene bis-benzotriazoles, etc.)

DEFINITION

Classification: 508/281

Chalcogen or nitrogen attached to the hetero ring directly or indirectly by acyclic nonionic bonding (e.g., methylene bis-benzotriazoles, etc.):

(under subclass 280) Compositions wherein the hetero ring is attached directly or indirectly by acyclic nonionic bonding to nitrogen or to chalcogen (i.e., oxygen, sulfur, selenium, or tellurium).

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