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CPC
COOPERATIVE PATENT CLASSIFICATION
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F25D
REFRIGERATORS ; COLD ROOMS ; ICE-BOXES ; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS ( refrigerated show cases A47F 3/04 ; thermally-insulated vessels for domestic use A47J 41/00 ; refrigerated vehicles, see the appropriate subclasses of classes B60 to B64 ; containers with thermal insulation in general B65D 81/38 ; heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants, or materials for the production of heat or cold by chemical reactions other than by combustion C09K 5/00 ; thermally-insulated vessels for liquefied or solidified gases F17C ; air-conditioning or air-humidification F24F ; refrigeration machines, plants or systems F25B ; cooling of instruments and comparable apparatus without refrigeration G12B ; cooling of engines or pumps, see the relevant classes )
NOTE
-
In this subclass, the following term is used with the meaning indicated:

- "device" means an enclosed space to be cooled; such
devices being associated either with refrigerating
machinery, e.g. in a refrigerator, or with other cold
sources, e.g. in an ice-box.

Attention is drawn to Note (2) following the title of subclass F24F .

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Guide Heading:
Devices not associated with refrigerating machinery
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F25D 1/00
Devices using naturally cold air or cold water
F25D 1/02
.
using naturally cold water, e.g. household tap water
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F25D 3/00
Devices using other cold materials ; Devices using cold-storage bodies
F25D 3/005
.
{
combined with heat exchangers
}
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F25D 3/02
.
using ice, e.g. ice-boxes
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F25D 3/04
. .
Stationary cabinets
F25D 3/045
. . .
{
Details
}
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F25D 3/06
. .
Movable containers
F25D 3/08
. . .
portable, i.e. adapted to be carried personally
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F25D 3/10
.
using liquefied gases, e.g. liquid air
{
( for cooling semiconductor devices H01L 23/445 )
}
F25D 3/102
. .
{
Stationary cabinets
}
F25D 3/105
. .
{
Movable containers
}
F25D 3/107
. .
{
portable, i.e. adapted to be carried personally
}
F25D 3/11
. .
with conveyers carrying articles to be cooled through the cooling space
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F25D 3/12
.
using solidified gases, e.g. carbon-dioxide snow
F25D 3/122
. .
{
Stationary cabinets
}
F25D 3/125
. .
{
Movable containers
}
F25D 3/127
. .
{
Stationary devices with conveyers carrying articles to be cooled through the cooling space
}
F25D 3/14
. .
portable, i.e. adapted to be carried personally
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F25D 5/00
Devices using endothermic chemical reactions, e.g. using frigorific mixtures
F25D 5/02
.
portable, i.e. adapted to be carried personally
F25D 7/00
Devices using evaporation effects without recovery of the vapour ( butter or cheese dishes with cooling devices A47G 19/26 )
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F25D 9/00
Devices not covered by groups F25D 1/00 to F25D 7/00 ; Combinations of devices covered by two or more of the groups F25D 1/00 to F25D 7/00
F25D 9/005
.
{
using fluorinated halogenous hydrocarbons
}
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Guide Heading:
Devices associated with refrigerating machinery
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F25D 11/00
Self-contained movable devices, e.g. domestic refrigerator
F25D 11/003
.
{
Transport containers
}
F25D 11/006
.
{
with cold storage accumulators
}
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F25D 11/02
.
with cooling compartments at different temperatures
F25D 11/022
. .
{
with two or more evaporators
}
F25D 11/025
. .
{
using primary and secondary refrigeration systems
}
F25D 11/027
. .
{
of the sorption cycle type
}
F25D 11/04
.
specially adapted for storing deep-frozen articles ( F25D 11/02 takes precedence )
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F25D 13/00
Stationary devices, e.g. cold-rooms
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F25D 13/02
.
with several cooling compartments, e.g. refrigerated locker systems
F25D 13/04
. .
the compartments being at different temperatures
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F25D 13/06
.
with conveyers carrying articles to be cooled through the cooling space
F25D 13/062
. .
{
with refrigerated conveyers
}
F25D 13/065
. .
{
Articles being submerged in liquid coolant
}
F25D 13/067
. .
{
with circulation of gaseous cooling fluid
}
F25D 15/00
Devices not covered by group F25D 11/00 or F25D 13/00 , e.g. non-self-contained movable devices
F25D 16/00
Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery
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Guide Heading:
Details or features of the devices covered by groups F25D 1/00 to F25D 16/00
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F25D 17/00
Arrangements for circulating cooling fluids ; Arrangements for circulating gas, e.g. air, within refrigerated spaces
F25D 17/005
.
{
in cold rooms
}
F25D 17/02
.
for circulating liquids, e.g. brine
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F25D 17/04
.
for circulating air, e.g. by convection
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F25D 17/042
. .
{
Air treating means within refrigerated spaces ( air conditioning in general F24F )
}
F25D 17/045
. . .
{
Air flow control arrangements
}
F25D 17/047
. . .
{
Pressure equalising devices
}
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F25D 17/06
. .
by forced circulation
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F25D 17/062
. . .
{
in household refrigerators
}
F25D 17/065
. . . .
{
with compartments at different temperatures
}
F25D 17/067
. . .
{
Evaporator fan units
}
F25D 17/08
. . .
using ducts
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F25D 19/00
Arrangement or mounting of refrigeration units with respect to devices
{
or objects to be refrigerated, e.g. infra-red detectors
}
F25D 19/003
.
{
with respect to movable containers
}
F25D 19/006
.
{
Thermal coupling structure or interface
}
F25D 19/02
.
plug-in type
F25D 19/04
.
with more than one refrigeration unit
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F25D 21/00
Defrosting ; Preventing frosting ; Removing condensed or defrost water ( removing ice or water from heat-exchange apparatus in general F28F 17/00 ; heating arrangements specially adapted for transparent or reflecting areas H05B 3/84 )
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F25D 21/002
.
{
Defroster control
}
F25D 21/004
. .
{
Control mechanisms ( F25D 21/006 takes precedence )
}
F25D 21/006
. .
{
with electronic control circuits
}
F25D 21/008
. .
{
by timer
}
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F25D 21/02
.
Detecting the presence of frost or condensate
F25D 21/025
. .
{
using air pressure differential detectors
}
F25D 21/04
.
Preventing the formation of frost or condensate
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F25D 21/06
.
Removing frost ( defrosting cycles F25B 47/02 )
F25D 21/065
. .
{
by mechanical means
}
F25D 21/08
. .
by electric heating
F25D 21/10
. .
by spraying with fluid
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F25D 21/12
. .
by hot-fluid circulating system separate from the refrigerant system
F25D 21/125
. . .
{
the hot fluid being ambient air
}
F25D 21/14
.
Collecting or removing condensed and defrost water ; Drip trays
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F25D 23/00
General constructional features ( F25D 21/00 takes precedence )
F25D 23/003
.
{
for cooling refrigerating machinery
}
F25D 23/006
.
{
for mounting refrigerating machinery components
}
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F25D 23/02
.
Doors ; Covers ( F25D 23/08 takes precedence )
{
locks or fastenings E05B 65/0042
}
F25D 23/021
. .
{
Sliding doors
}
F25D 23/023
. .
{
Air curtain closures
}
F25D 23/025
. .
{
Secondary closures
}
F25D 23/026
. .
{
for open-top cabinets
}
F25D 23/028
. .
{
Details
}
F25D 23/04
. .
with special compartments, e.g. butter conditioners
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F25D 23/06
.
Walls ( F25D 23/08 takes precedence; containers with thermal insulation B65D 81/38 )
F25D 23/061
. .
{
with conduit means
}
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F25D 23/062
. .
{
defining a cabinet
}
F25D 23/063
. . .
{
formed by an assembly of panels
}
F25D 23/064
. . .
{
formed by moulding, e.g. moulding in situ
}
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F25D 23/065
. .
{
Details
}
F25D 23/066
. . .
{
Liners
}
F25D 23/067
. . .
{
Supporting elements
}
F25D 23/068
. . .
{
Arrangements for circulating fluids through the insulating material
}
F25D 23/069
. .
{
Cooling space dividing partitions
}
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F25D 23/08
.
Parts formed wholly or mainly of plastics materials
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F25D 23/082
. .
{
Strips
}
NOTE
-
When a document describes both breaking and sealing strips it is classified in group F25D 23/082 only.

F25D 23/085
. . .
{
Breaking strips
}
F25D 23/087
. . .
{
Sealing strips
}
F25D 23/10
.
Arrangements for mounting in particular locations, e.g. for built-in type, for corner type
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F25D 23/12
.
Arrangements of compartments additional to cooling compartments ; Combinations of refrigerators with other equipment, e.g. stove
F25D 23/123
. .
{
Butter compartment
}
F25D 23/126
. .
{
Water cooler
}
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F25D 25/00
Charging, supporting, and discharging the articles to be cooled
F25D 25/005
.
{
using containers
}
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F25D 25/02
.
by shelves
F25D 25/021
. .
{
combined with trays
}
F25D 25/022
. .
{
Baskets
}
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F25D 25/024
. .
{
Slidable shelves
}
F25D 25/025
. . .
{
Drawers
}
F25D 25/027
. .
{
Rotatable shelves
}
F25D 25/028
. .
{
Cooled supporting means
}
F25D 25/04
.
by conveyers ( in general B65G )
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F25D 27/00
Lighting arrangements ( in general F21 )
F25D 27/005
.
{
combined with control means
}
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F25D 29/00
Arrangement or mounting of control or safety devices
F25D 29/001
.
{
for cryogenic fluid systems
}
F25D 29/003
.
{
for movable devices
}
F25D 29/005
.
{
Mounting of control devices
}
F25D 29/006
.
{
Safety devices
}
F25D 29/008
.
{
Alarm devices
}
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F25D 31/00
Other cooling or freezing apparatus
F25D 31/001
.
{
Plate freezers
}
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F25D 31/002
.
{
Liquid coolers, e.g. beverage cooler ( receptacle coolers F25D 31/006 )
}
F25D 31/003
. .
{
with immersed cooling element
}
F25D 31/005
.
{
Combined cooling and heating devices
}
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F25D 31/006
.
{
specially adapted for cooling receptacles, e.g. tanks
}
F25D 31/007
. .
{
Bottles or cans
}
F25D 31/008
. .
{
Drinking glasses
}
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F25D 2201/00
Insulation
Collapse
F25D 2201/10
.
with respect to heat
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F25D 2201/12
. .
using an insulating packing material
F25D 2201/122
. . .
of loose fill type
F25D 2201/124
. . .
of fibrous type
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F25D 2201/126
. . .
of cellular type
F25D 2201/1262
. . . .
with open cells
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F25D 2201/128
. . .
of foil type
F25D 2201/1282
. . . .
with reflective foils
F25D 2201/14
. .
using subatmospheric pressure
F25D 2201/30
.
with respect to sound
F25D 2230/00
F25D 2240/00
F25D 2250/00
F25D 2260/00
F25D 2270/00
F25D 2300/00
Special arrangements or features for refrigerators ; cold rooms ; ice-boxes ; Cooling or freezing apparatus not covered by any other subclass
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F25D 2303/00
Collapse
F25D 2303/08
.
Devices using cold storage material, i.e. ice or other freezable liquid
F25D 2303/081
. .
using ice cubes or crushed ice
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F25D 2303/082
. .
disposed in a cold storage element not forming part of a container for products to be cooled , e.g. ice pack or gel accumulator
F25D 2303/0821
. . .
the element placed in a compartment which can be opened without the need of opening the container itself
Collapse
F25D 2303/0822
. . .
Details of the element
F25D 2303/08221
. . . .
Fasteners or fixing means for the element
Collapse
F25D 2303/08222
. . . .
Shape of the element
F25D 2303/08223
. . . . .
having the shape of an ice cube
Collapse
F25D 2303/083
. .
using cold storage material disposed in closed wall forming part of a container for products to be cooled
F25D 2303/0831
. . .
the liquid is disposed in the space between the walls of the container
F25D 2303/0832
. . .
the liquid is disposed in an accumulator pack locked in a closable wall forming part of the container
Collapse
F25D 2303/084
. .
Position of the cold storage material in relationship to a product to be cooled
F25D 2303/0841
. . .
external to the container for a beverage, e.g. a bottle, can, drinking glass or pitcher
F25D 2303/0842
. . .
inside the beverage contained in a bottle, can, drinking glass, pitcher or dispenser
F25D 2303/0843
. . .
on the side of the product
F25D 2303/0844
. . .
above the product
F25D 2303/0845
. . .
below the product
F25D 2303/0846
. . .
around the neck of a bottle
F25D 2303/085
. .
Compositions of cold storage materials
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F25D 2317/00
Collapse
F25D 2317/04
.
Treating air flowing to refrigeration compartments
Collapse
F25D 2317/041
. .
by purification
Collapse
F25D 2317/0411
. . .
by dehumidification
F25D 2317/04111
. . . .
Control means therefor
Collapse
F25D 2317/0413
. . .
by humidification
F25D 2317/04131
. . . .
Control means therefor
F25D 2317/0415
. . .
by deodorizing
F25D 2317/0416
. . .
using an ozone generator
F25D 2317/0417
. . .
using an UV-lamp
F25D 2317/043
. .
by creating a vacuum in a storage compartment
Collapse
F25D 2317/06
.
with forced air circulation
F25D 2317/061
. .
through special compartments
F25D 2317/062
. .
along the inside of doors
F25D 2317/063
. .
with air guides
Collapse
F25D 2317/065
. .
characterised by the air return
F25D 2317/0651
. . .
through the bottom
F25D 2317/0652
. . .
through the corner
F25D 2317/0653
. . .
through the mullion
F25D 2317/0654
. . .
through the side
F25D 2317/0655
. . .
through the top
Collapse
F25D 2317/066
. .
characterised by the air supply
F25D 2317/0661
. . .
from the bottom
F25D 2317/0662
. . .
from the corner
F25D 2317/0663
. . .
from the mullion
F25D 2317/0664
. . .
from the side
F25D 2317/0665
. . .
from the top
F25D 2317/0666
. . .
from the freezer
F25D 2317/0667
. . .
from the refrigerator
Collapse
F25D 2317/067
. .
characterised by air ducts
F25D 2317/0671
. . .
Inlet ducts
F25D 2317/0672
. . .
Outlet ducts
Collapse
F25D 2317/068
. .
characterised by the fans
F25D 2317/0681
. . .
Details thereof
F25D 2317/0682
. . .
Two or more fans
F25D 2317/0683
. . .
the fans not of the axial type
F25D 2317/0684
. . .
the fans allowing rotation in reverse direction
Collapse
F25D 2321/00
Collapse
F25D 2321/14
.
Collecting condense or defrost water ; Removing condense or defrost water
Collapse
F25D 2321/141
. .
Removal by evaporation
F25D 2321/1411
. . .
using compressor heat
F25D 2321/1412
. . .
using condenser heat or heat of desuperheaters
F25D 2321/1413
. . .
using heat from electric elements or using an electric field for enhancing removal
F25D 2321/142
. .
characterised by droplet guides
F25D 2321/143
. .
characterised by means to fix, clamp, or connect water pipes or evaporation trays
Collapse
F25D 2321/144
. .
characterised by the construction of drip water collection pans
F25D 2321/1441
. . .
inside a refrigerator
F25D 2321/1442
. . .
outside a refrigerator
F25D 2321/145
. .
characterised by multiple collecting pans
F25D 2321/146
. .
characterised by the pipes or pipe connections
F25D 2321/147
. .
characterised by capillary, wick, adsorbent, or evaporation elements
Collapse
F25D 2323/00
F25D 2323/0011
.
Means for leveling refrigerators
Collapse
F25D 2323/002
.
Details for cooling refrigerating machinery
F25D 2323/0021
. .
using air guides
F25D 2323/0022
. .
using multiple air flows
F25D 2323/0023
. .
Control of the air flow cooling refrigerating machinery
F25D 2323/0024
. .
Filters in the air flow cooling refrigerating machinery
Collapse
F25D 2323/0026
. .
characterised by the incoming air flow
F25D 2323/00261
. . .
through the back bottom side
F25D 2323/00262
. . .
through the back top side
F25D 2323/00263
. . .
through the back corner side
F25D 2323/00264
. . .
through the front bottom part
F25D 2323/00265
. . .
through the front top part
F25D 2323/00266
. . .
through the bottom
F25D 2323/00267
. . .
through the side
F25D 2323/00268
. . .
through the top
Collapse
F25D 2323/0027
. .
characterised by the out-flowing air
F25D 2323/00271
. . .
from the back bottom
F25D 2323/00272
. . .
from the back top
F25D 2323/00273
. . .
from the back corner
F25D 2323/00274
. . .
from the front bottom
F25D 2323/00275
. . .
from the front top
F25D 2323/00276
. . .
from the bottom
F25D 2323/00277
. . .
from the side
F25D 2323/00278
. . .
from the top
Collapse
F25D 2323/0028
. .
characterised by the fans
F25D 2323/00281
. . .
Two or more fans
F25D 2323/00282
. . .
the fans not of the axial type
F25D 2323/00283
. . .
the fans allowing rotation in reverse direction
F25D 2323/00284
. . .
Details thereof
Collapse
F25D 2323/02
.
Details of doors or covers not otherwise covered
F25D 2323/021
. .
French doors
F25D 2323/022
. .
Doors that can be pivoted either left-handed or right-handed
F25D 2323/023
. .
Door in door constructions
F25D 2323/024
. .
Door hinges
Collapse
F25D 2323/06
.
Details of walls not otherwise covered
F25D 2323/061
. .
Collapsible walls
F25D 2323/062
. .
Inflatable walls
F25D 2323/121
.
the refrigerator is characterised by a water filter for the water/ice dispenser
F25D 2323/122
.
the refrigerator is characterised by a water tank for the water/ice dispenser
Collapse
F25D 2325/00
F25D 2325/021
.
Shelves with several possible configurations
F25D 2325/022
.
Shelves made of glass or ceramic
F25D 2325/023
.
Shelves made of wires
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F25D 2327/00
F25D 2327/001
.
Lighting arrangements on the external side of the refrigerator, freezer or cooling box
Collapse
F25D 2331/00
Collapse
F25D 2331/80
.
Type of cooled receptacles
Collapse
F25D 2331/801
. .
Bags
F25D 2331/8011
. . .
to be carried on the back of a person
F25D 2331/8012
. . .
for cosmetics
F25D 2331/8013
. . .
for playing golf
F25D 2331/8014
. . .
for medical use
F25D 2331/8015
. . .
Pouches
F25D 2331/802
. .
Barrels
F25D 2331/803
. .
Bottles
Collapse
F25D 2331/804
. .
Boxes
F25D 2331/8041
. . .
for drinking
Collapse
F25D 2331/805
. .
Cans
F25D 2331/8051
. . .
for holding milk
F25D 2331/806
. .
Dispensers
F25D 2331/807
. .
Eggs
F25D 2331/808
. .
Glasses
F25D 2331/809
. .
Holders
F25D 2331/81
. .
Pitchers
F25D 2331/811
. .
Pour-throughs
F25D 2331/812
. .
Trays
Collapse
F25D 2400/00
General features of, or devices for refrigerators, cold rooms, ice-boxes, or for cooling or freezing apparatus not covered by any other subclass
F25D 2400/02
.
Refrigerators including a heater
F25D 2400/04
.
Refrigerators with a horizontal mullion
F25D 2400/06
.
Refrigerators with a vertical mullion
F25D 2400/08
.
Refrigerator tables
F25D 2400/10
.
Refrigerator top-coolers
F25D 2400/12
.
Portable refrigerators
F25D 2400/14
.
Refrigerator multi units
F25D 2400/16
.
Convertible refrigerators
F25D 2400/18
.
Aesthetic features
F25D 2400/20
.
Carts specially adapted for transporting objects to be cooled
F25D 2400/22
.
Cleaning means for refrigerating devices
F25D 2400/24
.
Protection against refrigerant explosions
F25D 2400/26
.
Refrigerating devices for cooling wearing apparel, e.g. garments, hats, shoes or gloves.
F25D 2400/28
.
Quick cooling
F25D 2400/30
.
Quick freezing
F25D 2400/32
.
Removal, transportation or shipping of refrigerating devices from one location to another
F25D 2400/34
.
Temperature balancing devices
Collapse
F25D 2400/36
.
Visual displays
F25D 2400/361
. .
Interactive visual displays
F25D 2400/38
.
Refrigerating devices characterised by wheels
F25D 2400/40
.
Refrigerating devices characterised by electrical wiring
Collapse
F25D 2500/00
Problems to be solved
F25D 2500/02
.
Geometry problems
F25D 2500/04
.
Calculation of parameters
F25D 2500/06
.
Stock management
Collapse
F25D 2600/00
Control issues
F25D 2600/02
.
Timing
F25D 2600/04
.
Controlling heat transfer
F25D 2600/06
.
Controlling according to a predetermined profile
Collapse
F25D 2700/00
Means for sensing or measuring ; Sensors therefor
F25D 2700/02
.
Sensors detecting door opening
F25D 2700/04
.
Sensors detecting the presence of a person
F25D 2700/06
.
Sensors detecting the presence of a product
F25D 2700/08
.
Sensors using Radio Frequency Identification (RFID)
F25D 2700/10
.
Sensors measuring the temperature of the evaporator
Collapse
F25D 2700/12
.
Sensors measuring the inside temperature
F25D 2700/121
. .
of particular compartments
F25D 2700/122
. .
of freezer compartments
F25D 2700/123
. .
more than one sensor measuring the inside air temperature in a compartment
F25D 2700/14
.
Sensors measuring the temperature outside the refrigerator or freezer
F25D 2700/16
.
Sensors measuring the temperature of products
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Last Modified: 04/16/2013 4:31:16 PM