US PATENT SUBCLASS 208 / 430
.~.~ Contact with additive, followed by chemical conversion

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}
428  DF  .~ Including contact with extraneous additive other than hydrogen, e.g., solvent, etc. {7}
430.~.~ Contact with additive, followed by chemical conversion

DEFINITION

Classification: 208/430

Contact with an additive, followed by chemical conversion:

(under subclass 428) Subject matter wherein a chemical conversion step is performed after a feed or intermediate is contacted with an additive, e.g., mixing followed by conversion, extraction followed by conversion of extract, etc.

(1) Note. Examples of Chemical conversions are cracking, coking, etc.

(2) Note. The chemical conversion may take place in the same chamber to which the additive is added, provided that the conversion is downstream of the contacting step.

SEE OR SEARCH THIS CLASS, SUBCLASS:

427, for a process which includes combustion of feed or product.