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PCE
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DIFF Subgroup
F21V 29/51

using condensation or evaporation of a fluid, e.g. heat pipes

Introduced: January 2015

Full Title

Full titles differ between systems:

IPC:

Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems > Cooling arrangements > using condensation or evaporation of a fluid, e.g. heat pipes

CPC:

Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems (lighting fixtures combined with outlets for air-treatment systems F24F13/078) > Cooling arrangements (air-treatment systems dissipating or using the heat of lighting fixtures F24F3/056) > using condensation or evaporation of a fluid, e.g. heat pipes

IPC and CPC are identically structured here. All 1 subcodes exist in both systems.

IPC defines codes here since 2015.

Child Classifications

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  • F21V 29/52 electrically powered, e.g. refrigeration systems since 2015 IPC+CPC Available in IPC and CPC