DIFF Subgroup
F26B 5/04 by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
Introduced: September 1968
Full Title
Full titles differ between systems:
IPC:
Drying solid materials or objects by processes not involving the application of heat > by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
CPC:
Drying solid materials or objects by processes not involving the application of heat (separating liquids from solids by straining B01D; replacing liquids in wet solids by other liquids, e.g. water by spirit, B01D12/00; drying by electrophoresis B01J) > by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
CPC subdivides this area 7x more granularly than IPC with 6 additional codes.
6 codes are CPC-only extensions.
Child Classifications
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