IPC Classification

Class code (prefix) Descriptions Number of results
G01B Measuring length, thickness or similar linear dimensionsmeasuring anglesmeasuring areasmeasuring irregularities of surfaces or contours
G01C Measuring distances, levels or bearingssurveyingnavigationgyroscopic instrumentsphotogrammetry or videogrammetry
G01D Measuring not specially adapted for a specific variablearrangements for measuring two or more variables not covered by a single other subclasstariff metering apparatustransferring or transducing arrangements not specially adapted for a specific variablemeasuring or testing not otherwise provided for
G01F Measuring volume, volume flow, mass flow, or liquid levelmetering by volume
G01G Weighing
G01H Measurement of mechanical vibrations or ultrasonic, sonic or infrasonic waves
G01J Measurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics of infrared, visible or ultraviolet lightcolorimetryradiation pyrometry
G01K Measuring temperaturemeasuring quantity of heatthermally-sensitive elements not otherwise provided for
G01L Measuring force, stress, torque, work, mechanical power, mechanical efficiency, or fluid pressure
G01M Testing static or dynamic balance of machines or structurestesting of structures or apparatus, not otherwise provided for
G01N Investigating or analysing materials by determining their chemical or physical properties
G01P Measuring linear or angular speed, acceleration, deceleration or shockindicating presence or absence of movement indicating direction of movement
G01Q Scanning-probe techniques or apparatusapplications of scanning-probe techniques, e.g. scanning-probe microscopy [spm]
G01R Measuring electric variablesmeasuring magnetic variables
G01S Radio direction-findingradio navigationdetermining distance or velocity by use of radio waveslocating or presence-detecting by use of the reflection or reradiation of radio wavesanalogous arrangements using other waves
G01T Measurement of nuclear or x-radiation
G01V Geophysicsgravitational measurementsdetecting masses or objectstags
G01W Meteorology
G02B Optical elements, systems or apparatus
G02C Spectaclessunglasses or goggles insofar as they have the same features as spectaclescontact lenses
G02F Optical devices or arrangements for the control of light by modification of the optical properties of the media of the elements involved thereinnon-linear opticsfrequency-changing of lightoptical logic elementsoptical analogue/digital converters
G03B Apparatus or arrangements for taking photographs or for projecting or viewing themapparatus or arrangements employing analogous techniques using waves other than optical wavesaccessories therefor
G03C Photosensitive materials for photographic purposesphotographic processes, e.g. cine, x-ray, colour or stereo-photographic processesauxiliary processes in photography
G03D Apparatus for processing exposed photographic materialsaccessories therefor
G03F Photomechanical production of textured or patterned surfaces, e.g. for printing, for processing of semiconductor devicesmaterials therefororiginals thereforapparatus specially adapted therefor
G03G Electrographyelectrophotographymagnetography
G03H Holographic processes or apparatus
G04B Mechanically-driven clocks or watchesmechanical parts of clocks or watches in generaltime-pieces using the position of the sun, moon, or stars
G04C Electromechanical clocks or watches
G04D Apparatus or tools specially designed for making or maintaining clocks or watches
G04F Time-interval measuring
G04G Electronic time-pieces
G04R Radio-controlled time-pieces
G05B Control or regulating systems in generalfunctional elements of such systemsmonitoring or testing arrangements for such systems or elements
G05D Systems for controlling or regulating non-electric variables
G05F Systems for regulating electric or magnetic variables
G05G Control devices or systems insofar as characterised by mechanical features only
G06C Digital computers in which all the computation is effected mechanically
G06D Digital fluid-pressure computing devices
G06E Optical computing devices
G06F Electric digital data processing
G06G Analogue computers
G06J Hybrid computing arrangements
G06K Graphical data readingpresentation of datarecord carriershandling record carriers
G06M Counting mechanismscounting of objects not otherwise provided for
G06N Computing arrangements based on specific computational models
G06Q Information and communication technology [ict] specially adapted for administrative, commercial, financial, managerial or supervisory purposessystems or methods specially adapted for administrative, commercial, financial, managerial or supervisory purposes, not otherwise provided for
G06T Image data processing or generation, in general
G06V Image or video recognition or understanding
G07B Ticket-issuing apparatustaximetersarrangements or apparatus for collecting fares, tolls or entrance fees at one or more control points franking apparatus
G07C Time or attendance registersregistering or indicating the working of machinesgenerating random numbersvoting or lottery apparatusarrangements, systems or apparatus for checking not provided for elsewhere
G07D Handling of coins or of valuable papers, e.g. testing, sorting by denominations, counting, dispensing, changing or depositing
G07F Coin-freed or like apparatus
G07G Registering the receipt of cash, valuables, or tokens
G08B Signalling or calling systemsorder telegraphsalarm systems
G08C Transmission systems for measured values, control or similar signals
G08G Traffic control systems
G09B Educational or demonstration appliancesappliances for teaching, or communicating with, the blind, deaf or mutemodelsplanetariaglobesmapsdiagrams
G09C Ciphering or deciphering apparatus for cryptographic or other purposes involving the need for secrecy
G09D Railway or like time or fare tablesperpetual calendars
G09F Displayingadvertisingsignslabels or name-platesseals
G09G Arrangements or circuits for control of indicating devices using static means to present variable information
G10B Organs, harmoniums or similar wind musical instruments with associated blowing apparatus
G10C Pianos, harpsichords, spinets or similar stringed musical instruments with one or more keyboards
G10D Stringed musical instrumentswind musical instrumentsaccordions or concertinaspercussion musical instrumentsaeolian harps singing-flame musical instrumentsmusical instruments not otherwise provided for
G10F Automatic musical instruments
G10G Representation of musicrecording music in notation formaccessories for music or musical instruments not otherwise provided for, e.g. supports
G10H Electrophonic musical instrumentsinstruments in which the tones are generated by electromechanical means or electronic generators, or in which the tones are synthesised from a data store
G10K Sound-producing devicesmethods or devices for protecting against, or for damping, noise or other acoustic waves in generalacoustics not otherwise provided for
G10L Speech analysis techniques or speech synthesisspeech recognitionspeech or voice processing techniquesspeech or audio coding or decoding
G11B Information storage based on relative movement between record carrier and transducer
G11C Static stores
G12B Constructional details of instruments, or comparable details of other apparatus, not otherwise provided for
G16B Bioinformatics, i.e. information and communication technology [ict] specially adapted for genetic or protein-related data processing in computational molecular biology
G16C Computational chemistrychemoinformaticscomputational materials science
G16H Healthcare informatics, i.e. information and communication technology [ict] specially adapted for the handling or processing of medical or healthcare data
G16Y Information and communication technology specially adapted for the internet of things [iot]
G16Z Information and communication technology [ict] specially adapted for specific application fields, not otherwise provided for
G21B Fusion reactors
G21C Nuclear reactors
G21D Nuclear power plant
G21F Protection against x-radiation, gamma radiation, corpuscular radiation or particle bombardmenttreating radioactively contaminated materialdecontamination arrangements therefor
G21G Conversion of chemical elementsradioactive sources
G21H Obtaining energy from radioactive sourcesapplications of radiation from radioactive sources, not otherwise provided forutilising cosmic radiation
G21J Nuclear explosivesapplications thereof
G21K Techniques for handling particles or ionising radiation not otherwise provided forirradiation devicesgamma ray or x-ray microscopes
G99Z Subject matter not otherwise provided for in this section