US PATENT SUBCLASS 34 / 516
.~.~ Special 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}
516.~.~ Special gas or vapor {1}
517  DF  .~.~.~> Vapor

DEFINITION

Classification: 34/516

Special gas or vapor:

(under subclass 443) Process in which a gas or vapor is used that is other than atmospheric air.

(1) Note. Where there are sequential treatments by means of gas or vapor at least one treatment must be by a gas or vapor other than atmospheric air.

SEE OR SEARCH THIS CLASS, SUBCLASS:

67, for a special gas used with or generated by infrared energy.

446+, for treating the contact gas or vapor.