US PATENT SUBCLASS 508 / 279
.~.~.~.~ Three or four nitrogens in the hetero ring (e.g., 1,2,4-triazole, tetrazole, etc.)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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.~.~.~.~ 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}

DEFINITION

Classification: 508/279

Three or four nitrogens in the hetero ring (e.g., 1,2,4-triazole, tetrazole, etc.):

(under subclass 269) Compositions wherein the hetero ring has three nitrogen ring members or four nitrogen ring members.

(1) Note. The components provided for herein are monocyclic tetrazoles, monocyclic 1,2,3-triazoles, and monocyclic 1,2,4-triazoles.