US PATENT SUBCLASS 508 / 403
.~.~.~ The single bonded oxygen is bonded directly to carbon (e.g., sulfonate esters, etc.)

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}
403.~.~.~ The single bonded oxygen is bonded directly to carbon (e.g., sulfonate esters, etc.)

DEFINITION

Classification: 508/403

The single bonded oxygen is bonded directly to carbon (e.g., sulfonate esters, etc.):

(under subclass 390) Compositions wherein carbon is bonded directly to the single bonded oxygen of the -S(=O)(=O)O- group.

(1) Note. This subclass encompasses primarily sulfonic acid esters.

(2) Note. An example of a component provided for herein is C6H5-SO2OC5H11, benzene sulfonic acid,

amyl ester.