US PATENT SUBCLASS 507 / 209
.~.~ Organic component is carbohydrate or derivative thereof (e.g., sugar or gum, such as galactomannan, etc.) or carboxylic acid ester of an alcohol which has five or more hydroxy groups bonded directly to carbons

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}
209.~.~ Organic component is carbohydrate or derivative thereof (e.g., sugar or gum, such as galactomannan, etc.) or carboxylic acid ester of an alcohol which has five or more hydroxy groups bonded directly to carbons {3}
210  DF  .~.~.~> Carbohydrate has been grafted onto solid synthetic resin
211  DF  .~.~.~> Carbohydrate is polysaccharide {4}
218  DF  .~.~.~> Ester is higher fatty or carboxylic acid ester (e.g., sorbitan oleate, etc.)

DEFINITION

Classification: 507/209

Organic component is carbohydrate or derivative thereof (e.g., sugar or gum, such as galactomannan, etc.) or carboxylic acid ester of an alcohol which has five or more hydroxy groups bonded directly to carbons:

(under subclass 203) Compositions containing an organic component which is a carbohydrate or derivative thereof or a carboxylic acid ester of an alcohol which has five or more hydroxy groups bonded directly to carbons (e.g., sorbitan alkylate, etc.).

(1) Note. Carbohydrates are compounds which are saccharides whose monomeric units are polyhydroxy monoaldehydes or polyhydroxy monoketones having the empirical formula Cn(H20)n (wherein n is five or six) or the corresponding cyclic hemiacetals thereof, or the reaction derivatives thereof in which the carbon skeleton and the carbonyl function or hemiacetal function of the saccharide unit are not destroyed.