US PATENT SUBCLASS 508 / 222
.~.~ The heterocyclic compound reactant contains a lactone or cyclic carbonate 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}
221  DF  .~ Compound of indeterminate structure, prepared by reacting a heterocyclic compound of known structure; a heterocyclic ring is one having as ring members only carbon and at least one hetero atom selected from nitrogen and chalcogen (oxygen, sulfur, selenium, or tellurium) {9}
222.~.~ The heterocyclic compound reactant contains a lactone or cyclic carbonate ring

DEFINITION

Classification: 508/222

The heterocyclic compound reactant contains a lactone or cyclic carbonate ring:

(under subclass 221) Compositions wherein a lactone or a cyclic carbonate ring is present in the heterocyclic compound reactant.

(1) Note. A lactone, for purposes of this subclass, is characterized by a hetero ring consisting of carbons and the -C(=O)O- group, e.g., [figure]

(2) Note. A cyclic carbonate, for purposes of this subclass, is characterized by a hetero ring consisting of carbons and the -O-C(=O)O- group, e.g., [figure]