US PATENT SUBCLASS 208 / 431
.~.~ Specified hydrogen-donor solvent

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}
431.~.~ Specified hydrogen-donor solvent

DEFINITION

Classification: 208/431

Specified hydrogen-donor solvent:

(under subclass 428) Subject matter including contact with a solvent compound or mixture of compounds which can be oxidized by contact with the hydrogenatable feed or intermediate.

(1) Note. It is not necessary that the solvent material be expressly claimed as a hydrogen donor solvent as long as it is understood to provide a hydrogenation function.