US PATENT SUBCLASS 208 / 435
.~.~ Additive is specified catalyst or liquid solvent or dispersant

Current as of: June, 1999
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208 /   HD   MINERAL OILS: PROCESSES AND PRODUCTS

400  DF  BY TREATMENT OF SOLID MINERAL, E.G., COAL LIQUEFACTION, ETC. {13}
428  DF  .~ Including contact with extraneous additive other than hydrogen, e.g., solvent, etc. {7}
435.~.~ Additive is specified catalyst or liquid solvent or dispersant

DEFINITION

Classification: 208/435

Additive is specified catalyst or liquid solvent or dispersant:

(under subclass 428) Subject matter in which the additive is claimed to be a catalyst for a chemical reaction or a liquid which is claimed to dissolve or disperse at least one other material in the process.

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