US PATENT SUBCLASS 34 / 467
.~.~ Treatment of gas or vapor

Current as of: June, 1999
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34 /   HD   DRYING AND GAS OR VAPOR CONTACT WITH SOLIDS

282  DF  PROCESS {24}
443  DF  .~ Gas or vapor contact with treated material {17}
467.~.~ Treatment of gas or vapor {6}
468  DF  .~.~.~> Condensation of gas or vapor {2}
472  DF  .~.~.~> Absorption/adsorption of gas or vapor released from treated material {1}
474  DF  .~.~.~> Gas or vapor humidity regulation {1}
476  DF  .~.~.~> Gas or vapor temperature regulation {1}
478  DF  .~.~.~> Combustion of gas or vapor {1}
480  DF  .~.~.~> Filtering of gas or vapor

DEFINITION

Classification: 34/467

Treatment of gas or vapor:

(under subclass 443) Process involving any one or a combination of: (a) the use of gases having different degrees of vapor concentration regardless of how obtained; (b) changing or maintaining constant the vapor concentration by adding or removing gas or vapors; (c) adding any characteristic of material to or removing any characteristic of material from the treating gas or vapor.

(1) Note. Dry steam is treated as a gas.

(2) Note. Since the contact of a gas or vapor with material to be dried is for the purpose of removing liquids from the material with necessary increase in concentration, and heating necessarily decreases the vapor concentration, the vapor concentration control or varying must be from other causes.

(3) Note. The removal of materials from the gases or vapors after discharge from the treating zone is included here.

SEE OR SEARCH THIS CLASS, SUBCLASS:

516, and 517, for mere sequential treatment with gases or vapors without treating the gas or vapors.