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ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR (apparatus for special application, see the relevant places, e.g. A47J, C21, C22, C23, F21, F24, F27)
Definition statement
This subclass/group covers:

Electric heating:

  • Heat sources utilising ohmic resistance, electric, magnetic or electromagnetic fields, electric discharge, or combinations thereof;
  • Light sources specially adapted for heating, e.g. infrared sources as used in light ovens.

Not only the electric elements and circuitry designs are covered by this subclass but also the electric aspects of their arrangement, where these concern cases of general application. Where heating elements are used in specific applications, please see the relevant subclasses.

Electric lighting:

  • Electric arc lamps, electroluminescent light sources and light sources using a combination of different types of light generation;
  • Circuit arrangements for electric light sources.

The primary circuits of the above light sources and the elements themselves of the circuits are covered by this subclass. The above light sources when combined with light sources of a different kind are also covered by this subclass.

Relationship between large subject matter areas
  • Electric heating:

Uses of electric heat sources, or apparatus incorporating such heat sources, are too numerous to mention and cover all possible areas of technology. Examples of places where such uses or apparatus could be found include A47J (domestic cooking); B21J, B21K (forging by heat); C21, C22, C23 (metallurgy); F24 (domestic heating and stoves); F27 (furnaces and ovens). See also the references below.

  • Electric lighting:

Uses of electric light sources are also too numerous to mention and cover all possible areas of technology.

Class F21 covers the material arrangement of the various electric elements, i.e. their geometrical or physical position in relation to one another, such as the structures or constructional features of lighting devices incorporating a light source, electric or otherwise.

References relevant to classification in this subclass
This subclass/group does not cover:
Regulating electric characteristics of arcs in general

Examples of places where the subject matter of this subclass is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:

Heating or cooling appliances for medical or therapeutic treatment
Thermally-actuated switches
Electron beam or ion beam tubes for localised treatment of objects
Joining of preformed parts by heating of plastics or substances in a plastic state
Heating by electric, magnetic or electromagnetic fields for therapeutic purposes

Places in relation to which this subclass is residual:

Electric discharge tubes
Electric discharge lamps
Electric incandescent lamps
Semiconductor devices with at least one particular jump barrier or surface barrier, specially adapted for light emission
Organic light emitting devices (OLED)
Stimulated-emission devices
Plasma torches
Electric lighting
Numerous areas of technology, e.g. F21.
Informative references
Attention is drawn to the following places, which may be of interest for search:
Measuring of temperature by colorimeter
Control of temperature in general
Regulating electric power in general
Details of electric heating devices
Definition statement
This subclass/group covers:

General automatic switching arrangements specially adapted to heating applications, when no specific class exist for the particular heating application.

Control of heating devices, when no specific class exist for the particular heating application.

Further information:

H05B 1/0202 relates to automatic switching.

H05B 1/0227 relates to automatic control, classified according to the type of application.

References relevant to classification in this group
This subclass/group does not cover:
Control of temperature in general
Thermally-actuated switches
Control of induction heating devices
Control of electric discharge heating devices
H05B6/148
Control of microwave heating devices
Informative references
Attention is drawn to the following places, which may be of interest for search:
Bakers' ovens; machines or equipment for baking
Industrial microwave ovens
Characteristic features of footwear; parts of footwear
Heated mirrors
Kitchen equipment; coffee mills; spice mills; apparatus for making beverages
Dentistry
Methods or apparatus for sterilising materials
Chemical or physical processes
Soldering or welding; cutting by applying heat locally
Shaping or joining of plastics
Vehicle heating
Car seats
Heated mirrors for cars
Heated windshield window (car) / heated rear window (car)
Helicopters de-icing
Airplane wings de-icing
Containers for storage or transport
Pop corn heating
Nanotechnology
Carbon nanotubes
Ceramics
Adhesives
Heat treatment of metals or alloys
Metal-spraying
Heating of sport playgrounds
Cleaning open waters, e.g. deicing
Roofs de-icing
Devices for securing together constructional elements or machine parts
Pipes; joints or fittings for pipes; supports for pipes or cables
Glow plugs
Electrical cooker / glow plug / gas cooker
Removal of fumes associated to cooking range (or microwave ovens)
Domestic- or space-heating systems e.g. central heating
Fluid heaters
Drying solid materials or objects by removing liquid there from
Electric furnaces
Details or accessories of furnaces
Electrography; electrophotography; magnetography
Controlling non-electric variables
Controlling electric or magnetic variables
Resistors; methods of production
Electric switches
Semiconductor devices; methods of production
Aerials
Connectors
Removing snow from cables
Electric power conversion
Printed circuits
Ohmic-resistance heating
Definition statement
This subclass/group covers:

Heating by applying a voltage to a material with a certain conductivity, so that an electric current is generated that will according to the resistivity of the material will dissipate energy in form of heat.

According with this type of generation of heat, the heat can be generated in the same object that needs to be heated, or otherwise the heat has to be transferred to the object that needs to be heated by radiation, conduction or convection.

Further information:

H05B 3/0033- H05B 3/009 deal with heating devices using lamps

H05B 3/06 does not cover connectors (suitable) for heating elements, but covers the particular cases when the heater is structurally combined with the technical means allowing the electrical connection, otherwise only the classification in connectors, i.e. in H01R, applies.

H05B 3/10- H05B3/58A deal with heater elements characterised by the composition or nature of the materials or by the arrangement of the conductor.

H05B 3/34 covers car seat heaters.

H05B 3/345 covers any heater to be used in a textile material (even if they are not clothes)

H05B 3/50 covers any car air heater (independently of the structure of the heater).

H05B 3/62- H05B 3/66 deal with heating elements specially adapted for furnaces.

H05B 3/62-H05B 3/82 only cover electrical details, or details about the generation or transmission of heat. For other mechanical details the corresponding F24 or F27 class applies.

H05B 3/68- H05B 3/76 deal with heating arrangements specially adapted for cooking plates or analogous hot-plates

H05B 3/78- H05B 3/82 deal with heating arrangements specially adapted for immersion heating

H05B 3/84- H05B3/86M deal with heating arrangements specially adapted for transparent or reflecting areas

References relevant to classification in this group
This subclass/group does not cover:
Devices for radiation therapy
Electric cigarettes
Electrothermic treatment of ores
Ironing
Combustion engines heaters
Arrangements of heating elements in furnaces
Heat exchangers
Electric conductive compositions characterised by PTC or NTC resistance, per se
Electric discharge tubes or discharge lamps
Apparatus for thermal treatment of semiconductor or solid-state devices or of parts thereof
Connectors
Informative references
Attention is drawn to the following places, which may be of interest for search:
Aquarium heaters
Bakers' ovens; machines or equipment for baking
Characteristic features of footwear; parts of footwear
Warming plates
Heated mirrors
Kitchen equipment; coffee mills; spice mills; apparatus for making beverages
Dentistry
Chemical or physical processes
Soldering or welding; cutting by applying heat locally
Shaping or joining of plastics
Layered products comprising glass
Thermal printers
Vehicle heating
Car seats
Heated mirrors (for cars)
Heated windshield window (car) / heated rear window (car)
Helicopters de-icing
Aircraft de-icing
Containers for storage or transport
Pop corn heating
Nanotechnology
Carbon nanotubes
Surface treatment of glass-plate materials
Ceramics
Adhesives
Heat treatment of metals or alloys
Metal-spraying
Heating of sport playgrounds
Cleaning open waters, e.g. deicing
Roofs de-icing
Devices for securing together constructional elements or machine parts
Pipes; joints or fittings for pipes; supports for pipes or cables
Glow plugs
Electrical cooker / glow plug / gas cooker
Removal of fumes associated to cooking ranges
Domestic- or space-heating systems e.g. central heating
Air-conditioning
Fluid heaters
Drying solid materials or objects by removing liquid there from
Electric furnaces
Details or accessories of furnaces
Electrography; electrophotography; magnetography
Image fixing devices
Controlling non-electric variables
Resistors-methods of production
Electric switches
Gas-filled discharge tubes
Semiconductor devices; methods of production
Aerials
Removing snow or ice from cables
Removing snow from cables
Electric power conversion
Printed circuits
Heating by electric, magnetic, or electromagnetic fields (for therapeutic purposes A61N 5/00; joining of preformed parts by heating of plastics or substances in a plastic state B29C 65/02)
Definition statement
This subclass/group covers:
  • Induction heating
  • Dielectric heating
  • Microwave heating

Further information:

H05B 6/02 and subgroups relate to induction heating

H05B 6/46 and subgroups relate to dielectric heating

H05B 6/64 and subgroups relate to microwave heating

Control of cooking plates is covered by H05B 6/062. Control of cooking appliances other than cooking plates is covered by H05B 6/06.

Apportioning of the total heating power among the different heating coils is covered by H05B 6/065. Also apportioning in time, e.g. cyclic powering on and off of each heating coil. Also supplying a coil from multiple generators or multiple coils with a controlled amount of power from multiple generators. Also synchronisation, e.g. for avoiding generation of noise, or avoiding electromagnetic interferences. Not simply matrix heating plate per-se.

Induction heating apparatus, other than furnaces, for specific applications are covered by H05B 6/10.

Cooking devices are covered by H05B 6/12 but control of induction cooking devices is covered by H05B 6/06 and continuous movement of food is covered by H05B 6/10.

Induction cooking plates or the like and devices to be used in combination with them are covered by H05B 6/1209, but control for induction cooking plates is covered by H05B 6/062 and ohmic heating plates are covered by H05B 3/68.

H05B 6/1218 deals with induction cooking plates with arrangements using lights for the indication of the state of the heating zones. The typical application deals with the provision of LED's on a cooking area that are switched on when the induction heating power of that cooking area is switched on. Also particular details of the glass ceramic plate in order to achieve such effect, for example cut out, and darken areas to only illuminate the desired portion of the cooking area. Also glass plates having a substance or material sandwiched there inside that will interact with the magnetic field of the induction coils so that light is generated when the corresponding induction coil is switched on.

H05B 6/1227 deals with Induction cooking plates specially designed for wok pans, or similar shaped pans; also wok supports specially adapted for induction cooking (facilitating magnetic field transmission, coils provided inside the support...), cook-tops with wok-shaped upper surface (so substantially concave upper surface), but also cylinder surface with coils from top to bottom; wok is also called Chinese Pan.

H05B 6/1236 deals with Induction cooking plates adapted to induce current in a coil to supply power to a device and electrical heating devices powered in this way, If it is described any of the heating device itself or a particular control of the cook-top to recognise the load and correctly supply it with power. Typically the system acts as a transformer. The heating device is provided with a secondary coil for which the induction coil of the cook-top acts as primary.

H05B 6/1245 deals with induction cooking plates with special coil arrangements. The typical application deals with a particular coil material, coil shape, coil geometry , coil position within the plate or with respect to other coils.

H05B 6/1272 deals with induction cooking plates with more than one coil or coil segment per heating zone. Also when different concentric coils or coil segments or section with different coil distance or winding direction are provided . Also when coils are provided in different planes for the same heating zone.

H05B 6/1281 deals with induction cooking plates with flat coils. This means that the coil as a whole is constructed in a flat distribution, the coil conductor can however present a non-flat section. The typical application deals with coils particularly designed to be have a small total thickness, normally by printing a conductor on a substrate or by having a thin conductor embedded in a substrate. The flatness of the conductor used for the coil is not relevant.

H05B 6/129 deals with induction ovens. These are domestic appliances similar to a kitchen ovens wherein the heating means include at least an induction coil, (possibly in addition to any of the traditional heating means resistance heating, microwave heating, convection heating). Also induction heated trolleys, for catering, for example in airplanes. Also pop-corn machines (provided there is a closable / closed) cavity. Also vending machines in general (provided there is a closable / closed) cavity. Also induction warming drawers or the like (provided there is a closable / closed) cavity. Metal heat-treating apparatus only if there is a closable / closed cavity (therefore if it looks like a domestic oven). This class applies to cooking, de-freezing, warming, heat treating and re-heating appliances (the temperature achieved is unimportant).

H05B 6/14 can be assigned in combination with any of H05B 6/36, H05B 6/101 and H05B 6/105.

H05B 6/1209 takes precedence over H05B 6/34.

H05B 6/36 deals with coil arrangements with flat coil conductors. This means that the conductor used for the coil present a flat section (as a band), but the coil itself can have a (not flat) tri-dimensional distribution.

H05B 6/6402 deals with aspects relating to the microwave cavity but multiple cavity ovens are covered by H05B 6/80, continuous movement of material is covered by H05B 6/78, ovens specially adapted to a particular application are covered by H05B 6/80.

H05B 6/6408 deals with support or covers for the load inside the cavity. Supports or covers including microwave susceptors (e.g. browning plates) are additionally covered by H05B 6/6494.

H05B 6/6414 deals with aspects relating to the door of the microwave heating apparatus but microwave leakage is covered by H05B 6/76, and microwave leakage testing is covered by H05B 6/6432.

H05B 6/6417 deals with door interlocks of the microwave heating apparatus and related circuits. Also door position detecting circuits (e.g. with switches).

H05B 6/642 deals with the cooling of the microwave components and related air circulation systems, however if the refrigerating air is being re-circulated through the cavity for convection heating the class H05B 6/6476 is relevant instead.

H05B 6/6426 deals with any aspect relating to the exterior of the microwave heating apparatus, e.g. metal casing, power cord. Also handles (in portable microwave ovens) to allow carrying the microwave oven. Portable microwave ovens are additionally covered by H05B 6/80.

H05B 6/6432 deals with aspects relating to testing or detecting leakage in a microwave heating apparatus. This means detecting or testing the microwave radiation leaking out of the microwave oven but also microwave switching off upon detection of microwave leakage. Also testing the quality of microwave seals and screens by measuring the microwave leakage. However, detecting leaked or reflected microwaves going back to the magnetron is covered by H05B 6/76.

H05B 6/6447 deals with methods of operation or details of the microwave heating apparatus related to the use of detectors or sensors. However detecting reflected radiation for feedback control purposes is covered by H05B 6/705.

H05B 6/645 deals with the use of temperature sensor or thermistors for detecting the temperature of interior of the cavity or the product placed inside. However detecting the temperature of the magnetron or any related safety aspect is covered by H05B 6/666.

Details of particular circuits or particular components of the microwave generation circuit, e.g. a particular capacitor, a particular inductor... are classified under H05B 6/66 when no other more specific subgroup is provided for.

H05B 6/662 deals with aspects related to the boost transformer of the microwave heating apparatus. However cooling of the boost transformer is covered by H05B 6/642.

H05B 6/666 deals with safety circuits. The general idea in this subgroup is identifying situations where possible damage to the circuits (including inverter and magnetron) can occur. Also simply detecting the temperature of the magnetron/inverter or measuring anode current for limiting control, detecting status or detecting moding and eventually switching off the microwave oven/signalling alarm. Also soft start-up, control of preheating mode, controlled ramp up power supply at start up or at changing power level. However H05B 6/666 does not cover:

  • fume or fire detection, covered by H05B 6/6461
  • avoiding leakage, covered by H05B 6/76
  • sensing leakage outside the microwave oven, covered by H05B 6/6432
  • aspects related with door interlocks, even if relating to avoiding over-current at start up, covered by H05B 6/6417
  • circuit where a variable (e.g. anode current) is measured on a power supplied feedback control (feedback power control with anode current), covered by H05B 6/683
  • circuit for feedback power control with input current or inverter current being measured, covered by H05B 6/685
  • avoiding radiation back into the waveguide or in the magnetron, covered by H05B 6/76
  • avoiding generation of harmonics, covered by H05B 6/68

H05B 6/68 deals with circuits for monitoring or control. Typically the power supplied is controlled in a feedback loop. Includes monitoring input / output voltage / current / power in a feedback loop. Also if it is described compensation of the cooking time taking account of fluctuations in the power supply, temperature in the cavity or variables of the magnetron. If the presence of an inverter or of a solid state oscillator is not specified then this group is given and not the sub-groups. Also avoiding generation of harmonics. Also ZVS and ZCS.

However H05B 6/68 does not cover:

  • limiting threshold control, (keeping a variable bellow a safety threshold value) covered by H05B 6/666
  • soft start-up, control of preheating mode, controlled ramp up power supply at start up or at changing power level, covered by H05B 6/666

H05B 6/681 deals with circuits comprising an inverter, a boost transformer and a magnetron. Determinant is the presence of an inverter (there will always be a boost transformer and a magnetron). Includes methods of switching the inverter to regulate power (Duty-Ratio control and Frequency control). However, H05B 6/681 does not cover control based on sensors readings of non electrical variables (e.g. temperature, humidity... inside the cavity), covered by H05B 6/687 and H05B 6/6447.

H05B 6/686 deals with circuits comprising a signal generator and power amplifier, e.g. using solid state oscillators. Determinant is the presence of any of a power amplifier or a solid state oscillator (one implies the other).

H05B 6/687 deals with circuits for monitoring or control for cooking. The general idea is solving the problem of how to bring the cooked product to a certain status. Cooking is to be understood in the broad sense, therefore meaning also simply (re-)heating food or beverages. However, it is not enough the mere mention of cooking. It must be described a method of cooking with different steps in time or upon reaching certain status based on sensors readings. Also if a method of heating a particular type of food is described. H05B 6/688, H05B 6/6435, H05B 6/6447 and H05B 6/647 can be assigned in combination with H05B 6/687. However H05B 6/687 does not cover any of the following:

  • a particular apparatus for heating a particular food product covered by H05B 6/80 or H05B 6/782
  • switching off upon reaching a certain status for safety reasons covered by H05B 6/666
  • circuits controlling the switching of the inverter covered by H05B 6/681
  • compensation of the cooking time taking account of fluctuations in the power supply, temperature in the cavity, temperature of the magnetron or age of the magnetron covered by H05B 6/68.

H05B 6/688 is equivalent to H05B 6/687 but for the case of thawing.

H05B 6/70 deals with feed lines. This means the special way of providing microwave radiation to the load (not provided for in the sub-classes), like: application of microwaves using antennas inserted in the load; application of microwaves from multiple directions and/or with different parameters (frequency, phase, power); modification of the cavity (both periodically or according to a feedback control).

H05B 6/701 deals with the use of microwave applicators. It is not enough the mere mention of the word applicator (as any cavity can be called applicator, and this interpretation would be too broad). Typically for continuous movement of material (but not only). The waveguide ends with a particular shape that acts as a resonant cavity. To distinguish from the subject-matter covered by H05B 6/6402, it is considered an applicator when the applicator is a resonant cavity of dimensions similar to those of the waveguide and in this sense the applicator/cavity can be considered a continuation of the waveguide or waveguides.

However, magnetrons providing microwaves directly to the cavity or only using a coaxial cable (so no waveguide) are covered by H05B 6/70 or H05B 6/702.

H05B 6/702 takes precedence over H05B 6/707 and s.gr. when coaxial cables are used in combination with waveguides.

H05B 6/704 deals with the use of microwave polarisers. This includes when there is an explicit description of means for polarising the microwave radiation and also when it is described a method or apparatus where the use of polarised microwave radiation solves a technical problem.

H05B 6/705 deals with the use of microwave tuning. This includes changing the phase of the microwave radiation at the point of entering the cavity. Typically a waveguide with movable parts is used to change the phase of the standing wave generated. Microwave tuning comprises also impedance matching. Also changing the frequency with the intention of obtaining minimal impedance at the input of the cavity (in a feedback loop). Also detecting / sensing / measuring the microwave radiation reflected / not adsorbed, typically to make a feedback control on the power, frequency, phase applied (also with multiple microwave sources).

H05B 6/707 deals with the use of waveguides. Also when multiple waveguides are used.

However, waveguides used in combination with coaxial cables are covered by H05B 6/702.

H05B 6/72 deals with radiators or aerials. Also when multiple antennas are used. Antennas can receive microwaves directly from the magnetron, from a waveguide or from a coaxial cable.

H05B 6/725 deals with rotatable antennas. This also includes microwave stirring devices located inside the waveguide or at the opening of a waveguide to the cavity.

H05B 6/74 deals with mode transformers or mode stirrers. Stirrers are not antennas. The stirrers "only" reflect microwaves coming from the walls of the cavity. Also Cavity with moving walls or changing shape.

However, microwave stirring devices placed inside a waveguide or at the opening of a waveguide to the cavity are covered by H05B 6/72.

H05B 6/76 deals with the prevention of microwave leakage, e.g. door sealings. This includes also screens or deflectors for avoiding radiation back into the waveguide or in the magnetron. Also using dummy loads.

However, detection of microwave leakage is covered by H05B 6/6432.

H05B 6/763 deals with microwave radiation seals for doors.

However, mere air seals are covered by H05B 6/6414.

H05B 6/78 deals with arrangements for the continuous movement of material. However H05B 6/78 does not cover:

  • arrangements for heating fluids covered by H05B 6/802
  • the invention only refers to the applicator covered by H05B 6/701

H05B 6/782 deals with arrangements for the continuous movement of material wherein the material moved is food. This also includes particular apparatus for cooking / thawing a particular food product. However, H05B 6/782 does not cover:

  • method of cooking / Thawing a particular food product in a normal microwave oven covered by H05B 6/687 and H05B 6/688
  • the invention only refers to the applicator covered by H05B 6/701

H05B 6/80 deals with microwave apparatus for specific applications. Also particular apparatus for cooking / Thawing a particular food product. Also special type of microwave ovens, (e.g. portable, for vehicles or with DC power supply). Also multiple cavity oven. Also microwave oven with a separate cavity functioning as toaster, eventually in combination with other relevant classes (H05B 6/6414, H05B 6/6402).

However H05B 6/80 does not cover:

  • methods of cooking / thawing a particular food product in a normal microwave oven covered by H05B 6/687 or H05B 6/688
  • single cavity microwave including additionally radiating means (capable of toasting bread), covered by H05B 6/6482
  • continuous movement of material covered by H05B 6/78

H05B 6/802 deals with microwave apparatus for heating fluids.

H05B 6/802 does not cover:

  • methods of heating fluids in conventional microwave ovens covered by H05B6/66M
  • documents where the invention only refers to the applicator covered by H05B 6/701

H05B 6/806 deals with microwave apparatus for laboratory use. Typically it is mentioned a chemical reactor or similar. H05B 6/806 takes precedence over H05B 6/802.

References relevant to classification in this group
This subclass/group does not cover:
For therapeutic purposes
Soldering
Sealing of packages
Containers, packaging elements or packages specially adapted to be heated by microwaves
Heating of pipes
Inductive transmission of power in general, not directly related to heating
Heat treatment of metals or alloys
Joining of preformed parts by heating of plastics or substances in a plastic state
General details of cooking plates not related to the generation or transmission of heat
Refining or remelting of metals
Melting furnaces
Battery chargers using inductive or capacitive power transmission
Removing dry paint
Laser engraving of inorganic materials
Furnaces, klins, ovens or retorts and details thereof
Tube through flow heaters
Informative references
Attention is drawn to the following places, which may be of interest for search:
Kitchen equipment of specific material or particular construction
Trolleys with heating cooling or ventilating means
Warming devices with electrical heating means
Heat insulated warming chambers for heating food
Melt casting nozzles with heating means
Shrink fit tools
Glass-plate processing
Induction heating of molten crystal zone
Heating of cords using rolls
Doors specially adapted for stoves or ranges
Sealings for doors or transparent panels (for doors specially adapted for stoves or ranges)
Latches (for doors specially adapted for stoves or ranges)
Mounting of doors, e.g. hinges, counterbalancing (for doors specially adapted for stoves or ranges)
Handles (for doors specially adapted for stoves or ranges)
Transparent panels (for doors specially adapted for stoves or ranges)
Tops with provisions of circulation of air
Electro-photography
Vending machines in general
Inductive couplings
Coils in general
Waveguides; resonators, lines, or other devices of the waveguide type
Inductive charging batteries from ac mains by converters
Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:
Chinese Pan
wok
Heating by electric discharge (electron beam or ion beam tubes for localised treatment of objects H01J 37/30; plasma torches H05H 1/26)
Definition statement
This subclass/group covers:

Details about the electrodes of electric discharge heating apparatus, including mounting of the electrodes, electrical and mechanical connections. Also methods of supplying current and controlling power in electric discharge apparatus. Also heating by glow discharge and heating by arc discharge.

Further information:

H05B 7/02 - H05B 7/09 cover details of the electrodes

H05B 7/10 - H05B 7/14 cover details about how electrodes are mounted or connected

H05B 7/148 - H05B 7/156 cover power supplies for heating by electric discharge

H05B 7/16 covers heating by glow discharge

H05B 7/18 - H05B 7/225 cover heating by arc discharge

References relevant to classification in this group
This subclass/group does not cover:
Electron beam or ion beam tubes for localised treatment of objects
Plasma torches
Informative references
Attention is drawn to the following places, which may be of interest for search:
Soldering or welding; cutting by applying heat locally
Automatic feeding of electrodes for spot or seam welding or cutting
Electric furnaces
Details or accessories of furnaces
Disposition of electrodes in or on furnaces
Control of position in general
Regulating electric characteristics of arcs in general
Regulating electric power in general
Non-insulated conductors or conductive bodies in general
Insulated conductors or cables in general
Gas-filled discharge tubes
Circuit arrangements for supplying electric power in general
Electric power conversion
Heating by combined application of processes covered by two or more of groups H05B 3/00 to H05B 7/00 (H05B 7/20 takes precedence)
Definition statement
This subclass/group covers:

Heating by combined application of ohmic heating, induction heating, dielectric heating or electric discharge heating.

References relevant to classification in this group
This subclass/group does not cover:
Aspects related to microwave heating combined with other heating techniques
Informative references
Attention is drawn to the following places, which may be of interest for search:
Bakers' ovens; machines or equipment for baking
Industrial microwave ovens
Characteristic features of footwear; parts of footwear
Heated mirrors
Kitchen equipment; coffee mills; spice mills; apparatus for making beverages
Dentistry
Methods or apparatus for sterilising materials
Chemical or physical processes
Soldering or welding; cutting by applying heat locally
Shaping or joining of plastics
Vehicle heating
Car seats
Heated mirrors for cars
Heated windshield window (car) / heated rear window (car)
Helicopters de-icing
Airplane wings de-icing
Containers for storage or transport
Pop corn heating
Nanotechnology
Carbon nanotubes
Ceramics
Adhesives
Heat treatment of metals or alloys
Metal-spraying
Heating of sport playgrounds
Cleaning open waters, e.g. deicing
Roofs de-icing
Devices for securing together constructional elements or machine parts
Pipes; joints or fittings for pipes; supports for pipes or cables
Glow plugs
Electrical cooker / glow plug / gas cooker
Removal of fumes associated to cooking range (or microwave ovens)
Domestic- or space-heating systems e.g. central heating
Fluid heaters
Drying solid materials or objects by removing liquid there from
Electric furnaces
Details or accessories of furnaces
Electrography; electrophotography; magnetography
Controlling non-electric variables
Controlling electric or magnetic variables
Resistors; methods of production
Electric switches
Semiconductor devices; methods of production
Aerials
Connectors
Removing snow from cables
Electric power conversion
Printed circuits
Electric arc lamps (regulating electric characteristics of arcs G05F 1/02; with non-consumable electrodes H01J 61/00)
Definition statement
This subclass/group covers:

Lamps where an arc is established through air or a gas mixture using consumable electrodes (for example carbon rods).

References relevant to classification in this group
This subclass/group does not cover:
Luminaries and their mechanical construction
Regulating electric characteristics of arcs
Electric discharge tubes or discharge lamps
Electric arc lamps with non-consumable electrodes
Special rules of classification within this group

G05F 1/02 with non-consumable electrodes H01J 61/00

Circuit for gas discharge lamps in H05B 41/00

Electroluminescent light sources (discharge lamps H01J 61/00 to H01J 65/00; semi-conductor devices with at least one particular jump barrier or surface barrier adapted for light emission H01L 27/15, H01L 33/00; organic light emitting devices H01L 27/32, H01L 51/50; lasers H01S 3/00, H01S 5/00; compositions per se, see the relevant subclasses; { luminescent scales or hands G01D 13/20, G01D 13/28; luminescent dials G09F 13/20; conductive layers on isolated substrate H01B 1/00; solid state image amplifiers H01L 31/14; electronic gates with electroluminescent elements H03K 17/78; pulse generation with electroluminescent elements H03K 3/00} )
Definition statement
This subclass/group covers:

Elements, compositions, chemical compounds capable of emitting light and circuit arrangements for driving said sources.

References relevant to classification in this group
This subclass/group does not cover:
Luminescent scales or hands
Luminescent dials
Conductive layers on isolated substrate
Discharge lamps
Semi-conductor devices with at least one particular jump barrier or surface barrier adapted for light emission
Organic light emitting devices
Solid state image amplifiers
Lasers
Electronic gates with electroluminescent elements
Pulse generation with electroluminescent elements
Special rules of classification within this group

The sub-range H05B 33/08 dealing with electronics has to be circulated to and classified separately in H05B 33/08.

OLED's have to be circulated to H01L 51/00.

Inorganic LED have to be circulated to H01L 25/00, H01L 27/00, H01L 33/00

Other aspects of semiconductor have to be circulated to the appropriate classes, mainly in H01L.

Circuit arrangements not adapted to a particular application
Definition statement
This subclass/group covers:

Circuits for driving Electroluminescent panels, Light Emitting Diodes, Organic Light Emitting Diodes

Relevant documentation for LED/OLED colour control, optics: see SPIE digital library (www.spie.org)

Relevant documentation for Organic LEDs is to be found mainly in then on patent literature

References relevant to classification in this group
This subclass/group does not cover:
Physical arrangement of lamp components and construction aspects
Displays
LED fabrication and semiconductor
Lasers
Switching power supplies in general and inverters
Chemistry of Luminescent materials
Control of light sources general
Drivers for Fluorescent Lamps
Heat sinks and PCBs
Special rules of classification within this group
  • Control of white light is classified in the colour section H05B 33/0857 and subgroups.
  • See also attached classification document H05B_Bible
Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
References relevant to classification in this group
This subclass/group does not cover:
Luminescent materials
Electric light sources using a combination of different types of light generation (combinations of dissimilar light sources F21, H01J 61/96)
Definition statement
This subclass/group covers:

Circuits and apparatus for driving two dissimilar light sources (i.e. a compact fluorescent lamp and LEDs)

References relevant to classification in this group
This subclass/group does not cover:
Luminaries and their mechanical construction
Lamps with light-emitting discharge path and separately-heated incandescent body within a common envelope.
Informative references
Attention is drawn to the following places, which may be of interest for search:
Driving Electroluminescent panels
Driving LEDs
Controlling of lighting in general
Driving Incandescent lamps
Driving Fluorescent lamps
Special rules of classification within this group

The two dissimilar light sources must be in the same casing.

This group is meant for two types o light sources used simultaneously. Phosphors or different coloured LEDs are not to be considered as dissimilar light sources for the purpose of this group.

Not for substitution of the light source in case of failure, for that application see H05B 41/46

for emergency lighting check possibly H02J 9/065

rarely used

Synonyms and Keywords

In patent documents the following abbreviation are often used:

LED
Light emitting diode
OLED
Organic Light emitting diode
CCFL
Cold Cathode Fluorescent lamp
CFL
Compact Fluorescent lamp
HID
High Intensity discharge lamp
HPS
High Pressure lamp
Circuit arrangements for electric light sources in general { (vehicle lights B60L 1/14, B60Q; railways light signals B61L; lighting for photographic purposes G03B 15/02, for advertising purposes G09F) }
Definition statement
This subclass/group covers:

Application circuits for control of light sources. Where the focus of the control is in the application and not in the light source, controlling the light source when some external condition occurs (light dependent, occupancy, data communication, etc).

References relevant to classification in this group
This subclass/group does not cover:
Wakeup lights
Radiation Therapy
Colour Music
Vehicle lights
Monitoring vehicle lamps
Railways light signals
Stage Lighting Lamp mechanical construction aspects
F21P5/00
Lighting for photographic purposes
Time controlled switching
Building Automation Systems as e.g. domotics.
Blinds and Shutters
Regulating Voltage and current
Illuminated switch circuits
Traffic Lights
For advertising purposes
Light or sound activated switches
Data Communication in general
Special rules of classification within this group

When the light source is not relevant, release A61L 9/00

Circuit arrangements or apparatus for operating incandescent light sources and not adapted to a particular application { (incandescent lamps per se H01K) }
Definition statement
This subclass/group covers:

Circuits controlling the light intensity of incandescent lamps.

References relevant to classification in this group
This subclass/group does not cover:
Control of voltage and current
Incandescent lamps per se
Switching power supplies and inverters
Switching in general
Special rules of classification within this group

See attached classification document H05B_Bible

Circuit arrangements or apparatus for igniting or operating discharge lamps { (circuit elements structurally associated with discharge lamps H01J 7/44, H01J 19/78; discharge lamps per se H01J 61/00 to H01J 65/00; arc lamps with consumable electrodes H05B 31/00; transformers or chokes for supplying discharge lamps H01F 38/08) }
Definition statement
This subclass/group covers:

Circuits and drivers for discharge lamps.

References relevant to classification in this group
This subclass/group does not cover:
Welding with accumulated energy
Physical arrangement of lamp components and construction aspects
Transformers or chokes for supplying discharge lamps
Discharge lamps per se
Circuit elements structurally associated with discharge lamps
Discharge lasers
Switches and switching
Arc lamps with consumable electrodes
PCBs in general and heatsinks
Special rules of classification within this group

discharge lamps per se H01J

circuit elements structurally associated with discharge lamps H01J 7/44 , H01J 19/78

arc lamps with consumable electrodes H05B 31/00

transformers or chokes for supplying discharge lamps H01F 38/08

Synonyms and Keywords

In this group, the following terms are used with the meaning indicated:

DDBL
Dielectric Barrier Discharge Lamp
CCFL
Cold cathode fluorescent Lamp
CFL
Compact Fluorescent Lamp
HID
High Intensity Discharge
HPL
High Pressure Lamp
HPS
High Pressure Sodium
Circuit arrangements for light sources, not otherwise provided for (H05B 37/00 takes precedence)
Definition statement
This subclass/group covers:

Combustible light sources like magnesium flashes and other light sources not provided by the above groups

References relevant to classification in this group
This subclass/group does not cover:
Physical arrangement of lamp components and construction aspects
Circuit arrangements for electric light sources in general (control oriented rather than light source)
Informative references
Attention is drawn to the following places, which may be of interest for search:
Circuits for discharge flash lamps
Special rules of classification within this group

H05B 37/00 takes precedence

very rarely used

This page is owned by Office of Patent Classification.
Last Modified: 10/11/2013