US PATENT SUBCLASS 208 / 415
.~ Including contact of feed with liquid produced in the process, i.e., recycle

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.~ Including contact of feed with liquid produced in the process, i.e., recycle {3}
416  DF  .~.~> With discrete hydrogenation of recycle stream
417  DF  .~.~> Recycle of bottoms (resid)
418  DF  .~.~> Including contact with hydrogen gas

DEFINITION

Classification: 208/415

Including contact of feed with liquid produced in the process, i.e., recycle:

(under subclass 400) Subject matter wherein material derived from the solid feed is withdrawn from a later stage of the process and contacted, at an earlier stage of the process, with the solid feed to the process or with other feed-derived material.