US PATENT SUBCLASS 34 / 494
.~.~.~ To prevent damage to material or system

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}
493  DF  .~.~ Temperature of treating gas or vapor controlled {3}
494.~.~.~ To prevent damage to material or system

DEFINITION

Classification: 34/494

To prevent damage to material or system:

(under subclass 493) Process wherein the temperature of the treating gas or vapor is maintained at specified levels to prevent destruction to the treated material or the apparatus that constitutes the system.