US PATENT SUBCLASS 508 / 275
.~.~.~.~.~.~ Polycyclo ring system which contains the hetero ring as one of the cyclos (e.g., benzothiazoles, 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}
270  DF  .~.~.~.~ Chalcogen in the hetero ring (e.g., benzoxazoles, etc.) {3}
271  DF  .~.~.~.~.~ The chalcogen is sulfur (e.g., 1,3-thiazole,etc.) {2}
275.~.~.~.~.~.~ Polycyclo ring system which contains the hetero ring as one of the cyclos (e.g., benzothiazoles, etc.) {1}
276  DF  .~.~.~.~.~.~.~> The 2-position of the hetero ring is substituted by double bonded sulfur, a chain of sulfur atoms, or -SH (wherein H of-SH may be substituted by metal, ammonium, or substituted ammonium)

DEFINITION

Classification: 508/275

Polycyclo ring system which contains the hetero ring as one of the cyclos (e.g., benzothiazoles, etc.):

(under subclass 271) Compositions wherein the hetero ring is one of the cyclos of a polycyclo ring system.

(1) Note. Fused and bridged ring systems are considered to be polycyclo ring systems. Two rings joined solely by a spiro linkage are not considered to form a polycyclo ring system.

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