US PATENT SUBCLASS 208 / 130
.~.~.~.~ Steam

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

46  DF  CHEMICAL CONVERSION OF HYDROCARBONS {11}
106  DF  .~ Cracking {5}
125  DF  .~.~ With nonreactive material {2}
128  DF  .~.~.~ Vapors {2}
130.~.~.~.~ Steam

DEFINITION

Classification: 208/130

(under subclass 128) Processes wherein cracking takes place in the presence of steam.

SEE OR SEARCH THIS CLASS, SUBCLASS:

7, for processes of cracking which also involves oxidation by means of oxygen which may be evolved from the decomposition of steam.

107+, for processes of hydrogenative cracking employing hydrogen evolved from steam.