US PATENT SUBCLASS 208 / 106
.~ Cracking

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

46  DF  CHEMICAL CONVERSION OF HYDROCARBONS {11}
106.~ Cracking {5}
107  DF  .~.~> Hydrogenative {1}
113  DF  .~.~> Catalytic {4}
125  DF  .~.~> With nonreactive material {2}
131  DF  .~.~> Soaking
132  DF  .~.~> With heating in tubular confined stream

DEFINITION

Classification: 208/106

(under subclass 46) Processes wherein hydrocarbons are converted into a mixture including lighter, lower boiling hydro-carbons which are liquid at atmospheric temperature and pressure, or to coke.

(1) Note. Cracking operations which result in the formation of product coke is generally known as "coking". Cracking operations conducted under heat and pressure and in the absence of a catalyst is known as "thermal cracking".

SEE OR SEARCH THIS CLASS, SUBCLASS:

50+, for plural serial stage conversions wherein at least one of the stages includes a coking of a mineral oil.

67+, for plural serial stage conversions wherein the first stage is a thermal or a catalytic cracking of a mineral oil.

SEE OR SEARCH CLASS

48, Gas: Heating and Illuminating, particularly 211+, for processes of cracking an oil to produce a gaseous hydrocarbon, having utility as a heating or illumination gas.