US PATENT SUBCLASS 507 / 135
.~.~.~ Organic component contains a sulfur attached directly to carbon by nonionic bonding (e.g., sulfonate, etc.)

Current as of: June, 1999
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507 /   HD   EARTH BORING, WELL TREATING, AND OIL FIELD CHEMISTRY

100  DF  EARTH BORING {4}
103  DF  .~ Contains organic component {14}
134  DF  .~.~ Organic component contains sulfur attached directly or indirectly to carbon by nonionic bonding {1}
135.~.~.~ Organic component contains a sulfur attached directly to carbon by nonionic bonding (e.g., sulfonate, etc.)

DEFINITION

Classification: 507/135

Organic component contains a sulfur attached directly to carbon by nonionic bonding (e.g., sulfonate, etc.):

(under subclass 134) Composition wherein the organic component contains a sulfur which is attached to a carbon directly by nonionic bonding (e.g., sulfonates, thiols, mercaptans, thioethers, etc.).