US PATENT SUBCLASS 208 / 416
.~.~ With discrete hydrogenation of recycle stream

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}
415  DF  .~ Including contact of feed with liquid produced in the process, i.e., recycle {3}
416.~.~ With discrete hydrogenation of recycle stream

DEFINITION

Classification: 208/416

With discrete hydrogenation of recycle stream:

(under subclass 415) Subject matter in which the material removed from the process stream for recycle is hydrogenated, apart form the main process stream.