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TECHNIQUES FOR HANDLING PARTICLES OR IONISING RADIATION NOT OTHERWISE PROVIDED FOR; IRRADIATION DEVICES; GAMMA RAY OR X-RAY MICROSCOPES
Definition statement
This subclass covers:

Arrangements for handling particles or ionising radiation, e.g. focusing or moderating;

Ionising radiation filters, e.g. X-ray filters;

Conversion screens for the conversion of the spatial distribution of particles or ionising radiation into visible images, e.g. fluoroscopic screens;

Irradiation devices;

Gamma ray or X-ray microscopes.

References relevant to classification in this subclass
This subclass does not cover:

Investigating or analysing materials by the use of wave or particle radiation, e.g. X-rays or neutrons

Places in relation to which this subclass is residual:

Adaptations of reactors to facilitate experimentation or irradiation

Electron-optical arrangements in cathode ray tubes or electron beam tubes

Discharge tubes with provision for emergence of electrons or ions from the vessel; Lenard tubes

Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof

Electron or ion microscopes with scanning beams

Production or acceleration of neutral particle beams, e.g. molecular or atomic beams

Direct voltage accelerators; accelerators using single pulses

Targets for producing nuclear reactions

Details of linear accelerators, magnetic induction accelerators, cyclotrons and magnetic resonance accelerators

Linear accelerators

Magnetic induction accelerators, e.g. betatrons

Magnetic resonance accelerators; Cyclotrons

Methods or devices for acceleration of charged particles not otherwise provided for

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

Investigating or analysing materials by investigating the ionisation of gases

Scanning probe techniques or apparatus; applications of scanning probe techniques, e.g. scanning probe microscopy

X-ray apparatus involving X-ray tubes; circuits therefor

Apparatus or processes specially adapted for producing X-rays, not involving X-ray tubes, e.g. involving generation of plasma

Generating plasma; handling plasma

Particle spectrometers or separator tubes

Glossary of terms
In this subclass, the following terms (or expressions) are used with the meaning indicated:

Particle

Molecular, atomic or subatomic particle

Ionising radiation

'Ionising radiation’ consists of particles or electromagnetic waves that are sufficiently energetic to detach electrons from atoms or molecules, thus ionising them.

Arrangements for handling particles or ionizing radiation, e.g. focusing or moderating (production or acceleration of neutrons, electrically-charged particles, neutral molecular beams or neutral atomic beams H05H 3/00 - H05H 15/00)
Definition statement
This group covers:
  • Diaphragms, collimators for handling ionizing radiation
  • Arrangements using diffraction, refraction or reflection, e.g. monochromators, for handling ionizing radiation
  • Deviation, concentration or focusing of the beam by electric or magnetic means
  • Scattering devices
  • Absorbing devices
  • Filter for ionising radiation
References relevant to classification in this group
This group does not cover:

Moderators in nuclear reactors

Electrodes, lenses, blanking arrays etc. in discharge tubes

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

Production or acceleration of neutrons, electrically charged particles, or neutral molecular or atomic beams

{Manipulation of charged particles by using radiation pressure, e.g. optical levitation (acceleration of charged particles H05H 5/00 , H05H 7/00 , H05H 9/00 , H05H 11/00 , H05H 13/00)}
Definition statement
This subgroup covers:

Manipulation of charged nucleons or ions by radiation pressure, such as magneto optical ion traps, capturing cold ions

References relevant to classification in this group
This subgroup does not cover:

Acceleration of charged particles

Glossary of terms
In this subgroup, the following terms (or expressions) are used with the meaning indicated:

In this subclass, the following expressions are used with the meaning indicated

Radiation pressure

pressure exerted upon any surface exposed to electromagnetic radiation. If absorbed, the pressure is the power flux density divided by the speed of light. If the radiation is totally reflected, the radiation pressure is doubled

{Manipulation of neutral particles by using radiation pressure, e.g. optical levitation (production or acceleration of neutral particles H05H 3/00)}
Definition statement
This subgroup covers:

Manipulation of uncharged nucleons, atoms or molecules by radiation pressure, such as magneto optical atom traps, capturing cold atoms e.g. for cold-atom interferometry.

References relevant to classification in this group
This subgroup does not cover:

Sample preparation

Investigating characteristics of particles

Production or acceleration of neutral particles

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

Handling suspended soils or molecules independently from the bulk or fluid flow

B01L 3/502761 , also B01L 2400/0454 in combination with B01L 3/502761

Optical elements, system or apparatus

Computer generated holograms in general

using diaphragms, collimators
Glossary of terms
In this subgroup, the following terms (or expressions) are used with the meaning indicated:

Collimator

Structure which achieves certain beam properties by absorbing those parts of the beam not having the desired properties, as opposed to structures which actively (through reflection or diffraction) change those properties.

{using multiple collimators, e.g. Bucky screens; other devices for eliminating undesired or dispersed radiation}
Definition statement
This subgroup covers:

Devices selectively blocking rays according to their direction of propagation.

using variable diaphragms, shutters, choppers
Definition statement
This subgroup covers:

Devices selectively blocking rays according to the position on which they are incident onto the device.

{changing time structure of beams by mechanical means, e.g. choppers, spinning filter wheels}
Definition statement
This subgroup covers:

Devices such as choppers, scanning wheels e.g. "Nipkov disk"; filter wheels modulating the beam (i.e. continuously moving).

References relevant to classification in this group
This subgroup does not cover:

Moving scattering grids

Scanning of charged particle beams

G21K 1/08, G21K1/87, G21K1/93

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

Optical choppers

Special rules of classification within this group

For filter wheels modulating the beam (i.e. continuously moving), G21K 1/10 has to be allocated as well.

Glossary of terms
In this subgroup, the following terms (or expressions) are used with the meaning indicated:

chaning time structure

changing intensity, phase, polarisation or frequency over time

{varying the contour of the field, e.g. multileaf collimators}
Definition statement
This subgroup covers:

Diaphragms allowing a variation of the shape of the field, in a way which goes beyond changing the dimensions or the orientation or the aspect ratio of the field, e.g. by use of a plurality of individually positionable strips.

Example:

media0.jpg

US2009080619, Fig. 3

References relevant to classification in this group
This subgroup does not cover:

Iris diaphragms, setups changing only size or orientation of the irradiated region e.g. rectangular diaphragms

using diffraction, refraction or reflection, e.g. monochromators (G21K 1/10 , G21K 7/00 take precedence)
Definition statement
This subgroup covers:

Devices such as crystals, and all other optics not covered by the definition of the subgroups.

References relevant to classification in this group
This subgroup does not cover:

Scattering devices; Absorbing devices; Ionising radiation filters

Gamma- or X-ray microscopes

Special rules of classification within this group

Assignment of Indexing Codes G21K 2201/062 to G21K 2201/068 is obligatory as important information for further details.

Assignment of G21K 2201/06 to G21K 2201/068 as additional information is optional.

{Devices having a multilayer structure}
Definition statement
This subgroup covers:

Devices having a multilayer structure such as multilayer mirrors, multilayer gratings; including multilayers used in Laue geometry.

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

Mirrors for UV light

Multilayer mirrors for IR or visible or UV

Special rules of classification within this group

Documents, which could potentially concern UV light and (soft or ultrasoft) X-rays due to the structure of the apparatus, or due to doubts if the wavelength range of intended operation is in the UV or the EUV / X-ray range, are to be classified in G21K 1/062 and as well in appropriate places in G02B 5/00.

{using refraction, e.g. Tomie lenses}
Glossary of terms
In this subgroup, the following terms (or expressions) are used with the meaning indicated:

Tomie lens

compound refractive x-ray lens

Example:

media1.png

US5594773 (Tomie), Fig. 4a

{using surface reflection, e.g. grazing incidence mirrors, gratings (multilayer mirrors G21K 1/062 ; crystal optics G21K 1/06)}
Definition statement
This subgroup covers:

Grazing incidence mirrors, gratings, multicapillary lenses (Khumakov lenses).

Example:

media2.png

US5192869 (Kumakhov), Fig. 10

References relevant to classification in this group
This subgroup does not cover:

Crystal optics

Multilayer mirrors

Deviation, concentration or focusing of the beam by electric or magnetic means (electron-optical arrangements in electric discharge tubes H01J 29/46 ; { details, e.g. electric or magnetic deviating means for direct voltage accelerators or in accelerators using single pulses H05H 5/02 ; arrangements for injecting particles into orbits H05H 7/08 ; arrangements for ejecting particles from orbits H05H 7/10})
References relevant to classification in this group
This subgroup does not cover:

Electron optical arrangements in electric discharge tubes in cathode ray tubes

Electron optical arrangements in electric discharge tubes with provision for introducing objects

Electron optical arrangements in electric discharge tubes in particle spectrometers

Details, e.g. electric or magnetic deviating means for direct voltage accelerators or in accelerators using single pulses

Arrangements for injecting particles into orbits

Arrangements for ejecting particles from orbits

by electrical means
Definition statement
This subgroup covers:

Deviation, concentration or focusing of the beam by electrostatic means.

References relevant to classification in this group
This subgroup does not cover:

Deviation, concentration or focusing of the beam by electromagnetic means

Scattering devices; Absorbing devices; Ionising radiation filters
Definition statement
This subgroup covers:

Wavelength selective filter for X rays

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

Energy modification of the final beam

Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens (photographic processes using X-ray intensifiers G03C 5/17 ; discharge tubes comprising luminescent screens H01J 1/62 ; cathode ray tubes for X-ray conversion with optical output H01J 31/50)
Definition statement
This group covers:

Conversion screens for the conversion of the spatial distribution of X-rays or particle radiation into visible images, e.g. fluoroscopic screens

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

Photographic processes using X-rays; using screens to intensify X-ray images

In discharge tubes: screens on or from which an image or pattern is formed; luminescent screens

In cathode ray tubes or electron beam tubes: image conversion tubes or image amplification tubes having an X-ray input and an optical output

Irradiation devices (discharge tubes for irradiating H01J 37/00)
Definition statement
This group covers:

This main group contains devices for the irradiation of an object with ionising radiation such as X-rays or electron radiation.

References relevant to classification in this group
This group does not cover:

Conservation of food

Sterilization other than foodstuff or contact lenses

Preserving, protecting, or purifying packages or package content by irradiation

Discharge tubes with provision for emergence of electrons or ions from the vessel

Discharge tubes for irradiating

Discharge tubes with provision for introducing objects or material to be exposed to the discharge

Ion implanters

Electron beam or ion beam lithography

Glossary of terms
In this group, the following terms (or expressions) are used with the meaning indicated:

Irradiation

Exposure of an item to radiation with the aim to achieve a certain effect in the item, as opposed to techniques aiming at obtaining information from an item e.g. by analysis, obtaining images etc.

with beam-forming means
Definition statement
This subgroup covers:

Inter aliae, apparatus aspects of beam outlets for radiation therapy.

Special rules of classification within this group

Additional assignment of a group symbol of G21K 1/00 is mandatory whenever the means used for beam forming are relevant.

Gamma- or X-ray microscopes
Definition statement
This group covers:

Gamma- or X-ray microscopes

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Last Modified: 10/11/2013