US PATENT SUBCLASS 508 / 402
.~.~.~.~.~ Multiple additions thereof

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}
388  DF  .~ Organic sulfur compound, wherein the sulfur is single bonded directly to oxygen (e.g., sulfites, etc.) {2}
390  DF  .~.~ The sulfur is part of an -O-S(=O)(=O)- group (i.e., sulfonates) {12}
391  DF  .~.~.~ Overbased or carbonated sulfonates {7}
401  DF  .~.~.~.~ Prepared by addition of carbon dioxide, carbonic acid, or salt thereof {1}
402.~.~.~.~.~ Multiple additions thereof

DEFINITION

Classification: 508/402

Multiple additions thereof:

(under subclass 401) Compositions wherein the overbased or carbonated sulfonate is prepared by a process utilizing multiple, separate additions of carbon dioxide, carbonic acid, or a salt thereof.