US PATENT SUBCLASS 508 / 299
.~.~ Sulfur-containing hetero ring


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}
299.~.~ Sulfur-containing hetero ring {3}
300  DF  .~.~.~> Plural hetero atoms in the hetero ring (e.g., 1,3-dithiane, etc.)
301  DF  .~.~.~> Polycyclo ring system which contains the hetero ring as one of the cyclos (e.g., benzothiophenes, etc.)
302  DF  .~.~.~> The hetero ring is five-membered {1}


DEFINITION

Classification: 508/299

Sulfur containing hetero ring:

(under subclass 243) Compositions wherein sulfur and carbon are ring members of the hetero ring.

(1) Note. Examples of components provided for herein are [figure]