US PATENT SUBCLASS 508 / 390
.~.~ The sulfur is part of an -O-S(=O)(=O)- group (i.e., sulfonates)


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.~.~ The sulfur is part of an -O-S(=O)(=O)- group (i.e., sulfonates) {12}
391  DF  .~.~.~> Overbased or carbonated sulfonates {7}
403  DF  .~.~.~> The single bonded oxygen is bonded directly to carbon (e.g., sulfonate esters, etc.)
404  DF  .~.~.~> Nitrogen attached directly or indirectly to the sulfonate group by nonionic bonding
405  DF  .~.~.~> Non-sulfonate chalcogen attached indirectly to the sulfonate group by nonionic bonding
406  DF  .~.~.~> Halogen attached indirectly to the sulfonate group by nonionic bonding
407  DF  .~.~.~> With rosin, tall oil, or derivatives thereof of indeterminate structure
408  DF  .~.~.~> With organic phosphorus compound (e.g., phosphate esters, etc.)
409  DF  .~.~.~> With carboxylic acid ester
410  DF  .~.~.~> Organic nitrogen compound salt of a sulfonic acid, or an organic nitrogen compound is present {2}
413  DF  .~.~.~> With organic -C(=O)O- compound {2}
416  DF  .~.~.~> With organic halogen or non-sulfonate chalcogen compound (e.g., haloparaffins, ethers, ketones, polyols, etc.) {1}
418  DF  .~.~.~> Aluminum or heavy metal sulfonate salt


DEFINITION

Classification: 508/390

The sulfur is part of an -O-S(=O)(=O)- group (i.e., sulfonates):

(under subclass 388) Compositions wherein the sulfur is present as part of a sulfonate, -S(=O)(=O)O-, group.

(1) Note. Examples of components provided for herein are light metal dinonyl naphthalene sulfonates and light metal mahogany sulfonates.