US PATENT SUBCLASS 208 / 50
.~.~ Coking in at least one 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}
50.~.~ Coking in at least one stage {3}
51  DF  .~.~.~> With reforming
52 R  DF  .~.~.~> With both catalytic and thermal cracking {1}
53  DF  .~.~.~> First stage is coking {1}

DEFINITION

Classification: 208/50

(under subclass 49) Processes wherein coke is a product of at least one of the conversion stages.

(1) Note. Included herein are processes wherein, in at least one of the stages, mineral oils are converted to product coke, per se, or along with any hydrocarbons produced.

SEE OR SEARCH THIS CLASS, SUBCLASS:

106+, particularly subclasses 126 and 131 for single stage coking processes.

SEE OR SEARCH CLASS

201, Distillation: Processes, Thermolytic, appropriate subclass, for a process of producing coke by distilling a nonmineral oil material and see 23, for a process of producing coke by distilling a carbonaceous mixture including a minor amount of mineral oil.

423, Chemistry of Inorganic Compounds,

449.1+, for manufacturing carbon by a chemical reaction.