US PATENT SUBCLASS 507 / 111
.~.~.~ Carbohydrate is starch or derivative thereof

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}
110  DF  .~.~ Organic component is carbohydrate or derivative thereof (e.g., sugar or gum, such as galactomannan, xanthan, etc.) or carboxylic acid ester of an alcohol which has five or more hydroxy groups bonded directly to carbons {4}
111.~.~.~ Carbohydrate is starch or derivative thereof

DEFINITION

Classification: 507/111

Carbohydrate is starch or derivative thereof:

(under subclass 110) Composition wherein said carbohydrate is starch or a derivative thereof such as modified starch.