US PATENT SUBCLASS 507 / 207-- .~.~.~ Lignin or humate component contains sulfur or is reacted with substance containing sulfur (e.g., lignosulfonate, etc.)

US PATENT SUBCLASS 507 / 207
.~.~.~ Lignin or humate component contains sulfur or is reacted with substance containing sulfur (e.g., lignosulfonate, etc.)

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

200	DF	WELL TREATING {4}
203	DF	.~ Contains organic component {17}
206	DF	.~.~ Organic component is lignin or humate or derivative thereof (e.g., tannin, quebracho extract, etc.) {1}
207		.~.~.~ Lignin or humate component contains sulfur or is reacted with substance containing sulfur (e.g., lignosulfonate, etc.) {1}
208	DF	.~.~.~.~> Includes metal compound other than an alkali or alkaline earth metal compound (e.g., Al, Cr, Fe, Mn, Cu, etc.)

DEFINITION

Classification: 507/207

Lignin or humate component contains sulfur or is reacted with substance containing sulfur (e.g., lignosulfonate, etc.):

(under subclass 206) Compositions wherein the humate or lignin component contains sulfur or has been reacted with a substance containing sulfur (e.g., lignosulfonate, lignosulfate, sulfoalkylated humates such as sulfomethylated quebracho, sulfite liquor, etc.).

(1) Note. Included in this subclass is a lignin or humate component containing sulfur or reacted with sulfur which is also grafted onto a polymer or resin.

(2) Note. The final component need not contain sulfur.