Cooperative Patent Classification


CPC Definition - Subclass G21H

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Last Updated Version: 2018.05
OBTAINING ENERGY FROM RADIOACTIVE SOURCES; APPLICATIONS OF RADIATION FROM RADIOACTIVE SOURCES, NOT OTHERWISE PROVIDED FOR; UTILISING COSMIC RADIATION (measurement of nuclear or X-radiation G01T; fusion reactors G21B; nuclear reactors G21C; lamps in which a gas filling is excited to luminescence by external corpuscular radiation or by radioactive material structurally associated with the lamp H01J 65/04, H01J 65/06)
Definition statement

This place covers:

Arrangements for obtaining electrical energy from radioactive sources, e.g. from radioactive isotopes.

Arrangements for direct conversion of radiation energy from radioactive sources into forms of energy other than electrical energy.

Applications of radiation from radioactive sources or arrangements therefor, not otherwise provided for.

Use of effects of cosmic radiation.

References
Limiting references

This place does not cover:

Measurement of nuclear or X-radiation

Fusion reactors

Nuclear fission reactors

Lamps in which a gas filling is excited to luminescence by external corpuscular radiation or by radioactive material structurally associated with the lamp

Application-oriented references

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

Use of radiation to produce mutation in plants

Preservation of meat, sausages, fish, eggs, fruit, vegetables or edible seeds by irradiation without heating effect

Preservation of milk or milk preparations by irradiation

Preservation of non-alcoholic beverages or foodstuffs by irradiation without heating

Medicinal preparations obtained by treating materials with wave energy or particle radiation

Methods or apparatus using radiation for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses

Applying radioactive material to the body

Radiation therapy; therapy using X-rays, gamma rays or particle-irradiation

Direct application of radiation to physical, chemical or physico-chemical processes in general

Use of radiation for separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect

Use of radiation for pre-treatment of surfaces to which liquids or other fluent materials are to be applied, or after-treatment of applied coatings

Use of radiation in the working of plastics; after-treatment of articles without altering their shape; apparatus therefor

Railway trackside devices actuated by radiation and controlled by interaction with a vehicle or train

Railway trackside devices using radiation to control devices on a vehicle or train

Polymerisation initiated by wave energy or particle radiation; in addition polymers

Processes for treating or compounding macromolecular substances by wave energy or particle radiation

Chemical treatment or coating of shaped articles made of macromolecular substances using wave energy or particle radiation

Use of radiation for cracking of hydrocarbon oils

Use of radiation for reforming naphtha

Use of radiation for pasteurisation, sterilisation, preservation, purification, clarification or ageing of alcoholic beverages

Use of radiation for bleaching fibres, threads, yarns, fabrics, feathers, or made-up fibrous goods, leather or furs

Measuring angles, areas, length, thickness or similar dimensions, or irregularities of surfaces or contours, using wave or particle radiation

Transducers not specially adapted for a specific variable using wave or particle radiation derived from a radioactive source

Investigating fluid tightness of structures using radioactive material

Investigating or analysing materials by the use of wave or particle radiation

Investigating or analysing materials through the ionisation of gases, using wave or particle radiation to ionise a gas

Chemical analysis of biological material; immunoassay or bio-specific binding assays involving radioactive-labelled substances

Geophysics; prospecting or detecting using primary nuclear radiation sources

Fire alarms or alarms responsive to explosion, actuated by the presence of smoke or gas detected by an ionisation chamber

Carrying off electrostatic charges by means of ionising radiation

Informative references

Attention is drawn to the following places, which may be of interest for search:

Preservation of milk or milk preparations in general, of cream, butter, and cheese

Introduction of isotopes of elements into organic compounds

Techniques for handling particles or ionising radiation not otherwise provided for

Particle spectrometer ion sources or ion guns using particle bombardment, e.g. ionisation chambers

Semiconductor devices sensitive to electromagnetic or corpuscular radiation

Lasers

Special rules of classification

Classification of both important (invention) information and additional information is obligatory.

Arrangements for obtaining electrical energy from radioactive sources, e.g. from radioactive isotopes {, nuclear or atomic batteries}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Photoelectric discharge tubes not involving the ionization of a gas

Discharge tubes functioning as thermionic generators

Tubes for determining the presence, intensity, density or energy of radiation or particles

Thermoelectric devices comprising a junction of dissimilar materials

Cells using secondary emission induced by alpha radiation, beta radiation, or gamma radiation
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Photoelectric discharge tubes not involving the ionisation of a gas

Discharge tubes functioning as thermionic generators

Tubes for determining the presence, intensity, density or energy of radiation or particles

Cells wherein radiation is applied to the junction of different semiconductor materials
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Devices of the surface barrier or shallow PN junction detector type, e.g. surface barrier alpha-particle detectors

Cells in which radiation ionises a gas in the presence of a junction of two dissimilar metals, i.e. contact potential difference cells
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Electric discharge tubes or discharge lamps

Cells in which radiation heats a thermoelectric junction or a thermionic converter
Definition statement

This place covers:

Cells in which radiation of disintegration heat heats a thermoelectric junction or a thermionic converter.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Devices where heating occurs from fission reactions

Discharge tubes functioning as thermionic generators

Thermoelectric devices comprising a junction of dissimilar materials

Arrangements for direct conversion of radiation energy from radioactive sources into forms of energy other than electric energy, e.g. {into} light {or mechanic energy}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Lasers

Lasers pumped by high energy nuclear particles

Gamma masers

in which material is excited to luminesce by the radiation (lamps in which a gas filling or screen or coating is excited to luminesce by radioactive material structurally associated with the lamp  H01J 65/00)
References
Limiting references

This place does not cover:

lamps in which a gas filling or screen or coating is excited to luminesce by radioactive material structurally associated with the lamp

Informative references

Attention is drawn to the following places, which may be of interest for search:

Luminescent substances containing radioactive material

Applications of radiation from radioactive sources or arrangements therefor, not otherwise provided for 
References
References out of a residual place

Examples of places in relation to which this place is residual:

Use of radiation to produce mutations in plants

Preserving finished bakery products; improving by irradiation

Preservation of meat, sausages, fish, eggs, fruit, vegetables or edible seeds by irradiation causing heating effect

Preservation of meat, sausages, fish, eggs, fruit, vegetables or edible seeds by irradiation without heating effect

Preservation of milk or milk preparations by irradiation

Preservation of food or foodstuffs or non-alcoholic beverages by irradiation without heating

Medicinal preparations obtained by treating materials with wave energy or particle radiation

Preparations containing radioactive substances for use in therapy or testing in vivo

Methods or apparatus using radiation for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses

Applying radioactive material to the body

Radiation therapy; therapy using X-rays, gamma rays or particle-irradiation

Direct application of radiation to physical, chemical or physico-chemical processes in general

Use of radiation for separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect

Use of radiation for pre-treatment of surfaces to which liquids or other fluent materials are to be applied, or after-treatment of applied coatings

Use of radiation in the working of plastics; after-treatment of articles without altering their shape; apparatus therefor

Railway trackside devices actuated by radiation and controlled by interaction with a vehicle or train

Railway trackside devices using radiation to control devices on a vehicle or train

Polymerisation initiated by wave energy or particle radiation; in addition polymers

Processes for treating or compounding macromolecular substances by wave energy or particle radiation

Chemical treatment or coating of shaped articles made of macromolecular substances using wave energy or particle radiation

Use of radiation for cracking of hydrocarbon oils

Use of radiation for reforming naphtha

Use of radiation for pasteurisation, sterilisation, preservation, purification, clarification or ageing of alcoholic beverages

Use of radiation for bleaching fibres, threads, yarns, fabrics, feathers, or made-up fibrous goods, leather or furs

Measuring angles, areas, length, thickness or similar dimensions, or irregularities of surfaces or contours, using wave or particle radiation

Transducers not specially adapted for a specific variable using wave or particle radiation derived from a radioactive source

Investigating fluid tightness of structures using radioactive material

Investigating or analysing materials by the use of wave or particle radiation

Investigating or analysing materials through the ionisation of gases, using wave or particle radiation to ionise a gas

Chemical analysis of biological material; immunoassay or bio-specific binding assays involving radioactive-labelled substances

Geophysics; prospecting or detecting using primary nuclear radiation sources

Fire alarms or alarms responsive to explosion, actuated by the presence of smoke or gas detected by an ionisation chamber

Irradiation devices

Gamma ray or X-ray microscopes

In cathode ray tubes, charge-storage screens exhibiting internal electrical effects caused by particle radiation

Semiconductor devices sensitive to electro-magnetic or corpuscular radiation

Lasers using pumping by high energy nuclear particles

Apparatus for generating ions to be introduced into non-enclosed gasses, e.g. into the atmosphere

Carrying off electrostatic charges by means of ionising radiation

Informative references

Attention is drawn to the following places, which may be of interest for search:

Dairy products, making thereof

Preservation of milk or milk preparations in general, of cream, butter and cheese

Organic chemistry, applications of radiation for preparation of organic chemical compounds

Introducing isotopes into organic compounds

Measuring

as tracers
References
Application-oriented references

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

Medicinal preparations containing radioactive substances

Informative references

Attention is drawn to the following places, which may be of interest for search:

Investigating or analysing biological material