US PATENT SUBCLASS 208 / 417
.~.~ Recycle of bottoms (resid)

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


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}
417.~.~ Recycle of bottoms (resid)

DEFINITION

Classification: 208/417

Recycle of bottoms (resid):

(under subclass 415) Subject matter in which a distillation is performed upon an intermediate mixture in the process, and the nonvaporized portion from the distillation operation is recycled.