US PATENT SUBCLASS 508 / 210
.~.~.~.~.~ The nitrogen is in a hetero ring

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}
202  DF  .~ Organic compound containing silicon (e.g., silicon esters) {5}
207  DF  .~.~ Carbon or hydrogen bonded directly to the silicon {1}
208  DF  .~.~.~ Two silicons bonded directly to the same chalcogen (e.g., methylphenyl silicon, etc.) {3}
209  DF  .~.~.~.~ With organic nitrogen compound {2}
210.~.~.~.~.~ The nitrogen is in a hetero ring

DEFINITION

Classification: 508/210

The nitrogen is in a hetero ring:

(under subclass 209) Compositions wherein the nitrogen is a ring member of a hetero ring.

(1) Note. A hetero ring is one whose ring members are carbon and at least one hetero atom selected from nitrogen and chalcogen (i.e., oxygen, sulfur, selenium, or tellurium). In this subclass, the hetero ring must contain ring nitrogen.