US PATENT SUBCLASS 34 / 329
.~ With contacting of material treated with solid or liquid agent

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

282  DF  PROCESS {24}
329.~ With contacting of material treated with solid or liquid agent {5}
330  DF  .~.~> With regeneration or removal of treating agent {3}
343  DF  .~.~> With addition of heat to drying process {3}
353  DF  .~.~> Solid treating agent treats solid material {2}
356  DF  .~.~> Solid treating agent treats suspension or slurry
357  DF  .~.~> Liquid treating agent treats solid material {1}

DEFINITION

Classification: 34/329

With contacting of material treated with solid or liquid agent:

(under subclass 282) Process involving contacting the treated material with either a liquid or solid to promote drying or fluid cooling operation of the treated material but not merely to cause motion of or apply mechanical pressure to the material undergoing treatment.

(1) Note. The drying operation on the treated material is usually by absorption, adsorption, or adhesion.

SEE OR SEARCH THIS CLASS, SUBCLASS:

71, 94, and 95, for corresponding apparatus for contacting material undergoing treatment with solids.

306, for spacer sheets and webs.

307, for the shielding or retarding of drying by the application of solid material to the material undergoing treatment or the use of a surface coating on the treated material.

376, for recirculation of the material undergoing treatment, including the adding of material to be treated to the recirculated treated material.

397, for expressing or other mechanical liquid removal combined with drying. 402+, and 414+, for passing material through a liquid seal.

443+, for a process including contact of the material with gases and vapors.

SEE OR SEARCH CLASS

134, Cleaning and Liquid Contact With Solids, for a process of cleaning combined with drying and for a process of cleaning, per se, even though the cleaning is by gas or vapor contact with solids. Class 34 has drying, per se, regardless of the operations used.

201, Distillation: Processes, Thermolytic,

10+, for a thermolytic distillation process involving contacting the material undergoing treatment with a hot liquid or solid.

260, Chemistry of Carbon Compounds,

110, and 705 for extraction.

422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing,

255+, for dissolving, extracting, or bleaching apparatus.

423, Chemistry of Inorganic Compounds, for a process directed to extracting, leaching, or dissolving therein provided for, and 658.5, for extracting, leaching, or a dissolving process not elsewhere provided for.

427, Coating Processes, for a process of applying a liquid to a substrate to form a coating.