US PATENT SUBCLASS 208 / 75
.~.~.~.~ With cracking of total product from first stage

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}
72  DF  .~.~.~ Cracking in all stages {4}
75.~.~.~.~ With cracking of total product from first stage

DEFINITION

Classification: 208/75

(under subclass 72) Processes wherein the total undivided product from the first cracking step is subjected to a subsequent cracking operation.