US PATENT SUBCLASS 508 / 273
.~.~.~.~.~.~.~ Acyclic sulfur bonded directly to the 2- and 5- positions of a 1,3,4- thiadiazole ring or a hydrogenated 1,3,4-thiadiazole 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}
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}
272  DF  .~.~.~.~.~.~ Plural nitrogens or plural sulfurs in the hetero ring (e.g., thiadiazoles, etc.) {1}
273.~.~.~.~.~.~.~ Acyclic sulfur bonded directly to the 2- and 5- positions of a 1,3,4- thiadiazole ring or a hydrogenated 1,3,4-thiadiazole ring {1}
274  DF  .~.~.~.~.~.~.~>.~ Oxygen or nitrogen attached indirectly to one of the acyclic sulfurs by acyclic nonionic bonding

DEFINITION

Classification: 508/273

Acyclic sulfur bonded directly to the 2- and 5- positions of a 1,3,4-thiadiazole ring or a hydrogenated 1,3,4-thiadiazole ring:

(under subclass 272) Compositions wherein the 2- and 5-positions of a 1, 3, 4-thiadiazole ring or of a hydrogenated 1, 3, 4-thiadiazole ring are each bonded directly to acyclic sulfur.

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