US PATENT SUBCLASS 507 / 255
.~.~.~.~ The sulfur is part of a sulfonate group

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


507 /   HD   EARTH BORING, WELL TREATING, AND OIL FIELD CHEMISTRY

200  DF  WELL TREATING {4}
203  DF  .~ Contains organic component {17}
252  DF  .~.~ Organic component contains sulfur attached directly or indirectly to carbon by nonionic bonding {2}
253  DF  .~.~.~ Organic component contains ether linkage (i.e., C-O-C) {2}
255.~.~.~.~ The sulfur is part of a sulfonate group

DEFINITION

Classification: 507/255

The sulfur is part of a sulfonate group:

(under subclass 253) Compositions wherein the sulfur in the organic component is part of a sulfonate group.