US PATENT SUBCLASS 208 / 59
.~.~.~ Hydrocracking in all stages

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}
58  DF  .~.~ First stage is hydrocracking (includes hydro-desulfurization under cracking conditions) {3}
59.~.~.~ Hydrocracking in all stages

DEFINITION

Classification: 208/59

(under subclass 58) Processes wherein mineral oil is subjected only to a plurality of steps of destructive hydrogenation (cracking in the presence of hydrogen).