US PATENT SUBCLASS 208 / 68
.~.~.~ With subsequent hydrocracking

Current as of: June, 1999
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208 /   HD   MINERAL OILS: PROCESSES AND PRODUCTS

46  DF  CHEMICAL CONVERSION OF HYDROCARBONS {11}
49  DF  .~ Plural serial stages of chemical conversion {6}
67  DF  .~.~ First stage is thermal or catalytic cracking {4}
68.~.~.~ With subsequent hydrocracking

DEFINITION

Classification: 208/68

(under subclass 67) Processes including at least one subsequent step of cracking in the presence of hydrogen (destructive hydrogenation).

SEE OR SEARCH THIS CLASS, SUBCLASS:

58+, for processes which include plural serial conversions wherein the first stage is an hydrocracking reaction.