US PATENT SUBCLASS 502 / 419
.~.~.~ Producing diverse useful byproduct

Current as of: June, 1999
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502 /   HD   CATALYST, SOLID SORBENT, OR SUPPORT THEREFOR: PRODUCT OR PROCESS OF MAKING

400  DF  SOLID SORBENT {6}
416  DF  .~ Free carbon containing {3}
418  DF  .~.~ Process utilizing solid or liquid source carbonizable material, or product thereof {9}
419.~.~.~ Producing diverse useful byproduct

DEFINITION

Classification: 502/419

Producing diverse useful byproduct:

(under subclass 418) Process in which the production or collection of a different useful material or energy (e.g., heat) is positively claimed.

(1) Note. The positive recitation of collection of volatiles and use of these as fuel in an upstream phase is considered to give a diverse by product.

SEE OR SEARCH CLASS

201, Distillation: Processes Thermolytic appropriate subclasses for a process of coking which may also produce a byproduct fuel gas.

208, Mineral Oils: Processes and Products appropriate, subclasses for production of tar or pitch from mineral oil.