US PATENT SUBCLASS 508 / 260
.~.~.~.~.~ Nitrogen and carbonyl attached indirectly to the 1,4-diazine ring by nonionic bonding

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}
244  DF  .~.~ The hetero ring contains six members including nitrogen and carbon (e.g., pyridine, picoline salts, etc.) {7}
255  DF  .~.~.~ Plural nitrogens in the hetero ring {3}
259  DF  .~.~.~.~ 1,4-Diazines {1}
260.~.~.~.~.~ Nitrogen and carbonyl attached indirectly to the 1,4-diazine ring by nonionic bonding

DEFINITION

Classification: 508/260

Nitrogen and carbonyl attached indirectly to the 1,4-diazine ring by nonionic bonding:

(under subclass 259) Compositions wherein the 1,4-diazine ring is attached indirectly to both nitrogen and carbonyl, -C(=O)-, by nonionic bonding.

(1) Note. An example of a component provided for herein is poly (terephthaloyl piperazine), the repeating unit of which is [figure]