US PATENT SUBCLASS 508 / 244
.~.~ The hetero ring contains six members including nitrogen and carbon (e.g., pyridine, picoline salts, 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}
244.~.~ The hetero ring contains six members including nitrogen and carbon (e.g., pyridine, picoline salts, etc.) {7}
245  DF  .~.~.~> Chalcogen in the hetero ring {2}
255  DF  .~.~.~> Plural nitrogens in the hetero ring {3}
261  DF  .~.~.~> Polycyclo ring system which contains the hetero ring as one of the cyclos
262  DF  .~.~.~> Piperidines {1}
264  DF  .~.~.~> Vinyl pyridine polymer (e.g., polyvinylpyridine, vinyl-pyridine-alkyl acrylate copolymer, etc.) {1}
266  DF  .~.~.~> Nitrogen attached to the hetero ring directly or indirectly by acyclic nonionic bonding
267  DF  .~.~.~> Chalcogen or nitrogen attached indirectly to the hetero ring by nonionic bonding

DEFINITION

Classification: 508/244

The hetero ring contains six members including nitrogen and carbon (e.g., pyridine, picoline salts, etc.):

(under subclass 243) Compositions wherein the hetero ring is six-membered with only carbon and nitrogen as ring members.

(1) Note. Examples of components provided for herein are lauryl pyridinium chloride and picoline. Picoline is methyl pyridine.