US PATENT SUBCLASS 208 / 128
.~.~.~ Vapors


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.~.~.~ Vapors {2}
129  DF  .~.~.~.~> Combustion gases
130  DF  .~.~.~.~> Steam


DEFINITION

Classification: 208/128

(under subclass 125) Processes wherein cracking takes place in the presence of an added gas or vapor.