US PATENT SUBCLASS 208 / 61
.~.~.~ With subsequent thermal or catalytic cracking

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}
61.~.~.~ With subsequent thermal or catalytic cracking

DEFINITION

Classification: 208/61

(under subclass 58) Processes including also at least one subsequent step of thermal or catalytic cracking.