IPC Definitions - January 01, 2012

G21H - Definition fr

Definition statement

This subclass 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;

Use of effects of cosmic radiation.

References relevant to classification in this subclass

This subclass does not cover:

Fusion reactors

G21B

Nuclear reactors

G21C

Techniques for handling particles or electromagnetic radiation not otherwise provided for; irradiation devices, gamma- or X-ray microscopes

G21K

Electric discharge tubes or discharge lamps

H01J

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

H01T 23/00
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:

Use of radiation to produce mutation in plants

A01H 1/06

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

A23B 4/015, A23B 5/015, A23B 7/015, A23B 9/06

Preservation of milk or milk preparations by irradiation

A23C 3/07

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

A23L 2/50, A23L 3/26

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

A61K 41/00

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

A61L 2/08

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

A61N 5/00, A61N 5/10

Applying radioactive material to the body

A61M 36/00

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

B01J 19/08

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

B03C 3/38

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

B05D 3/06

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

B29C 71/04

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

B61L 1/10

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

B61L 3/06

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

C08F 2/46, C08F 2/54, C08G 2/02

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

C08J 3/28

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

C08J 7/18

Use of radiation for cracking of hydrocarbon oils

C10G 15/10, C10G 32/04

Use of radiation for reforming naphtha

C10G 35/16

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

C12H 1/06, C12H 1/16

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

D06L 3/04

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

G01B 15/00

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

G01D 5/50, G01D 5/62

Investigating fluid tightness of structures using radioactive material

G01M 3/20

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

G01N 23/00

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

G01N 27/64

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

G01N 33/534, G01N 33/60

Geophysics; prospecting or detecting using primary nuclear radiation sources

G01V 5/08

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

G08B 17/11

Carrying off electrostatic charges by means of ionising radiation

H05F 3/06

Informative references

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

Measurement of nuclear or X-radiation

G01T

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

H01J 49/14

Semiconductor devices sensitive to electromagnetic or corpuscular radiation

H01L 31/00