US PATENT SUBCLASS 208 / 424
.~ Specified procedure to improve separation of solids from liquid product

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}
424.~ Specified procedure to improve separation of solids from liquid product {1}
425  DF  .~.~> Including centrifugation, filtering, flotation or vibration

DEFINITION

Classification: 208/424

Specified procedure to improve separation of solids from liquid product:

(under subclass 400) Subject matter in which a procedure, more than mere "separation" is claimed for removal of solids from the liquid product of the process.