Theme -Code-Choice

On this page, you can select 3L 「theme code」.

Select the desired 「Theme code」.

  • 3L001
  • Solar systems
  • 3L004
  • Flaky ice manufacturing
  • 3L005
  • Air conditioner defrosting and operation control
  • 3L006
  • Gas fuel stoves or cooking ranges
  • 3L011
  • Air conditioning for vehiclesAutomobile air conditioning systems
  • 3L012
  • Automobile heating system, ventilation system, and other air processing systems
  • 3L013
  • Automobile cooling systems
  • 3L014
  • Cooling media transportation through heat pipes or brine
  • 3L015
  • Cooling media circulation in refrigerators
  • 3L016
  • Cooling media circulation in showcases and automatic vending machines
  • 3L017
  • Refrigerator cooling units
  • 3L018
  • General construction of refrigerators
  • 3L019
  • Arrangement of compartments annexed to cooling rooms
  • 3L020
  • Filling goods to be cooled and lighting devices
  • 3L021
  • Control of steam boilers and waste-gas boilers
  • 3L022
  • Heat pumps and solar and waste heat utilization water heaters
  • 3L023
  • Bath boilers
  • 3L024
  • Control for baths
  • 3L025
  • Water heaters with a hot-water storage means
  • 3L026
  • Water tank-type heater control
  • 3L027
  • Water heaters for central heating etc.
  • 3L028
  • Direct air heating by heater or combustion gas
  • 3L029
  • Heating of air by heat echangers
  • 3L030
  • Arrangement or installation of control or safety devices
  • 3L031
  • Steam generation in general
  • 3L032
  • Kinds of steam boilers
  • 3L033
  • Details of steam boilers
  • 3L034
  • Instantaneous water boilers, portable hot-water supply apparatuses, and control of portable hot-water supply apparatuses
  • 3L035
  • Water and air heaters coupling and regenerative heating devices
  • 3L036
  • Details of fluid heaters
  • 3L037
  • Housings, intake/discharge, and installation of fluid heaters
  • 3L038
  • Arrangement and installation of drainage and heating elements of liquid heating devices
  • 3L039
  • Heat generation or utilization not through chemical reaction or combustion
  • 3L040
  • Solar heat collector devices
  • 3L041
  • Details of solar heat collector devices
  • 3L042
  • Accessory members of solar heat collector devices
  • 3L043
  • Solar heat collector systems
  • 3L044
  • Devices not associated with refrigerating machinery
  • 3L045
  • Devices that are associated with refrigeration equipment
  • 3L046
  • Defrosting systems
  • 3L047
  • Defrosting
  • 3L048
  • Removal of water from condensation and defrosting
  • 3L049
  • Air-conditioning room units, and self-contained units in general
  • 3L050
  • Devices for blowing cold air, devices for blowing warm air, and means for preventing water condensation in air conditioning units
  • 3L051
  • Air filters, heat-exchange apparatuses, and housings of air-conditioning units
  • 3L052
  • Unit installation, ventilation and dehumilidifier equipment
  • 3L053
  • Central air conditioning
  • 3L054
  • Other air-conditioning systems
  • 3L055
  • Air humidification
  • 3L056
  • Ventilation (1)
  • 3L057
  • Ventilation 2
  • 3L058
  • Ventilation (3)
  • 3L059
  • Ventilation 4
  • 3L060
  • Air conditioning controllers (1)
  • 3L061
  • Air-conditioning control devices
  • 3L063
  • Details of general heat exchange or transmission devices 1
  • 3L064
  • Details of general heat exchange or transmission devices 2
  • 3L065
  • Details of heat-exchange and heat-transfer in general (3)
  • 3L066
  • Details of general heat exchange or transmission devices 4
  • 3L067
  • Details of general heat exchange or transmission devices 5
  • 3L070
  • Steam or hot-water central heating systems
  • 3L071
  • Central heating systems that use hot air or heat accumulated in storage masses
  • 3L072
  • Central heating systems using electricity or heat accumulation
  • 3L073
  • Domestic hot-water supply systems and details of heating systems
  • 3L074
  • Water preheating and supply for steam generation
  • 3L075
  • Heating of steam
  • 3L080
  • Duct arrangements
  • 3L081
  • Air-flow control members
  • 3L082
  • Solid fuel household stoves or cooking ranges
  • 3L084
  • Solid fuel stoves or cooking ranges; control
  • 3L085
  • Liquid fuel stoves or cooking ranges
  • 3L086
  • Electric ovens
  • 3L087
  • Electric stoves and ranges
  • 3L088
  • Stove or cooking range details 1
  • 3L089
  • Stove or cooking range details 2
  • 3L090
  • Compression refrigerating machines through irreversible cycles
  • 3L091
  • Compression refrigerating machines using low-boiling cooling media
  • 3L092
  • Compression-type refrigeration machines with reversible cycles
  • 3L093
  • SORPTION TYPE REFRIGERATION MACHINES
  • 3L094
  • Other refrigerating machines
  • 3L095
  • Compressors, evaporator, condensers and liquid circulators
  • 3L096
  • Boilers, analyzers, fractionators, absorbers and absorbers
  • 3L097
  • Gas-liquid separating devices, defrosters, control or safety devices
  • 3L100
  • Steam or vapor condensers
  • 3L101
  • Heat exchangers through direct contact
  • 3L102
  • Refrigerator housings (i.e., walls)
  • 3L103
  • HEAT-EXCHANGE DEVICES WITH RADIATORS AND CONDUIT ASSEMBLIES
  • 3L106
  • Heat exchangers using intermediate heat conductive media
  • 3L107
  • Regenerative heat exchangers; heat accumulation plants and others
  • 3L108
  • Heat exchanger pipe cleaning
  • 3L110
  • PRODUCTION, WORKING, STORING, OR DISTRIBUTION OF ICE
  • 3L113
  • Drying of solid materials
  • 3L122
  • HEAT-PUMP TYPE AND STORAGE WATER HEATERS
  • 3L130
  • 3L208
  • 3L211
  • AIR-CONDITIONING FOR VEHICLES
  • 3L260
  • AIR CONDITIONING CONTROL DEVICE
  • 3L345
  • COLD AIR CIRCULATING SYSTEMS AND CONSTRUCTIONAL DETAILS IN REFRIGERATORS
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