US PATENT SUBCLASS 508 / 253
.~.~.~.~.~ With organic phosphorus compound

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}
244  DF  .~.~ The hetero ring contains six members including nitrogen and carbon (e.g., pyridine, picoline salts, etc.) {7}
245  DF  .~.~.~ Chalcogen in the hetero ring {2}
251  DF  .~.~.~.~ Polycyclo ring system which contains the hetero ring as one of the cyclos (e.g., phenothiazines, etc.) {3}
253.~.~.~.~.~ With organic phosphorus compound

DEFINITION

Classification: 508/253

With organic phosphorus compound:

(under subclass 251) Compositions which contain, in addition to the polycyclo ring system having the hetero ring as one of the cyclos, an organic phosphorus compound.

(1) Note. An organic phosphorus compound is one wherein phosphorus is attached directly or indirectly by nonionic bonding to carbon of an organic compound.

(2) Note. See Notes to the Class Definition for the definition of an organic compound.