| Rank | Class | Patents | Class Description |
| 1 | G06F | | ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computation... |
| 2 | H04W | | WIRELESS COMMUNICATION NETWORKS [2009.01]... |
| 3 | H04L | | TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangement... |
| 4 | H04N | | PICTORIAL COMMUNICATION, e.g. TELEVISION [4]... |
| 5 | G09G | | ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO... |
| 6 | H04B | | TRANSMISSION [4]... |
| 7 | G06T | | IMAGE DATA PROCESSING OR GENERATION, IN GENERAL [2006.01]... |
| 8 | H04R | | LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICA... |
| 9 | H05K | | PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUF... |
| 10 | D144 | | Class ID not recognized. |
| 11 | G06K | | RECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARR... |
| 12 | H04M | | TELEPHONIC COMMUNICATION (circuits for controlling other apparatus via a telepho... |
| 13 | G02B | | OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS (G02F takes precedence; optical elements... |
| 14 | H01L | | SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR (... |
| 15 | H01Q | | AERIALS (radiators or aerials for microwave heating H05B 6/72)... |
| 16 | G10L | | SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SP... |
| 17 | H01R | | ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF M... |
| 18 | H02J | | CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SY... |
| 19 | G06Q | | DATA PROCESSING SYSTEMS OR METHODS, SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMER... |
| 20 | G11C | | STATIC STORES (information storage based on relative movement between record car... |
| 21 | G02F | | DEVICES OR ARRANGEMENTS, THE OPTICAL OPERATION OF WHICH IS MODIFIED BY CHANGING ... |
| 22 | G01C | | MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTR... |
| 23 | H01M | | PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY... |
| 24 | H01H | | ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES (contact cabl... |
| 25 | G08B | | SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS... |
| 26 | H02M | | APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND... |
| 27 | A61B | | DIAGNOSIS; SURGERY; IDENTIFICATION (analysing biological material G01N, e.g. G01... |
| 28 | G01S | | RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY U... |
| 29 | G01R | | MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct t... |
| 30 | H03K | | PULSE TECHNIQUE (measuring pulse characteristics G01R; modulating sinusoidal osc... |
| 31 | H03M | | CODING, DECODING OR CODE CONVERSION, IN GENERAL (using fluidic means F15C 4/00; ... |
| 32 | D142 | | Class ID not recognized. |
| 33 | H04J | | MULTIPLEX COMMUNICATION (peculiar to transmission of digital information H04L 5/... |
| 34 | D143 | | Class ID not recognized. |
| 35 | G01N | | INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL P... |
| 36 | G06V | | IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING... |
| 37 | H01F | | MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PR... |
| 38 | G06N | | COMPUTER SYSTEMS BASED ON SPECIFIC COMPUTATIONAL MODELS [7]... |
| 39 | F21V | | FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURA... |
| 40 | B32B | | LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CEL... |
| 41 | G01J | | MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PUL... |
| 42 | H04S | | STEREOPHONIC SYSTEMS [3]... |
| 43 | H03L | | AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ... |
| 44 | G03B | | APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING TH... |
| 45 | H05B | | ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR... |
| 46 | G01B | | MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEAS... |
| 47 | H03G | | CONTROL OF AMPLIFICATION (impedance networks, e.g. attenuators, H03H; control of... |
| 48 | G05F | | SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES (regulating the timing or ... |
| 49 | B60R | | VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR (fire p... |
| 50 | G10H | | ELECTROPHONIC MUSICAL INSTRUMENTS; INSTRUMENTS IN WHICH THE TONES ARE GENERATED ... |
| 51 | G04G | | ELECTRONIC TIME-PIECES [3]... |
| 52 | A44C | | JEWELLERY; BRACELETS; OTHER PERSONAL ADORNMENTS; COINS... |
| 53 | G11B | | INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSD... |
| 54 | H03F | | AMPLIFIERS (measuring, testing G01R; optical parametric amplifiers G02F; circuit... |
| 55 | D131 | | Class ID not recognized. |
| 56 | B65D | | CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS... |
| 57 | G08C | | TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS (fluid pres... |
| 58 | C25D | | PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTR... |
| 59 | C12Q | | MEASURING OR TESTING PROCESSES INVOLVING ENZYMES OR MICROORGANISMS (immunoassay ... |
| 60 | B29C | | SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHE... |
| 61 | H01J | | ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS (spark-gaps H01T; arc lamps with con... |
| 62 | D10 | | INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES... |
| 63 | G01L | | MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, ... |
| 64 | H01S | | DEVICES USING STIMULATED EMISSION... |
| 65 | G05B | | CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; M... |
| 66 | H04K | | SECRET COMMUNICATION; JAMMING OF COMMUNICATION... |
| 67 | G10K | | SOUND-PRODUCING DEVICES (sound-producing toys A63H 5/00); METHODS OR DEVICES FOR... |
| 68 | C12N | | MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF (biocides, pest repellants or at... |
| 69 | G01D | | MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASUR... |
| 70 | H04H | | BROADCAST COMMUNICATION (multiplex communication H04J; pictorial communication a... |
| 71 | G09B | | EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATI... |
| 72 | G16H | | HEALTHCARE INFORMATICS, i.e. INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPEC... |
| 73 | D 94 | | Class ID not recognized. |
| 74 | B23K | | SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; ... |
| 75 | G04B | | MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN ... |
| 76 | H02H | | EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS (indicating or signalling undesired wo... |
| 77 | H02K | | DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H 53/00; conversion of DC or... |
| 78 | G08G | | TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway... |
| 79 | B22D | | CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES ... |
| 80 | H03H | | IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS (measuring, testing G01R;... |
| 81 | H10K | | ORGANIC ELECTRIC SOLID-STATE DEVICES... |
| 82 | G05D | | SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES (for continuous cas... |
| 83 | C22C | | ALLOYS (treatment of alloys C21D, C22F)... |
| 84 | H03B | | GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLO... |
| 85 | D 32 | | Class ID not recognized. |
| 86 | G01P | | MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION OR SHOCK; INDICATI... |
| 87 | C03C | | CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUS ENAMELS; SURFACE TREATMENT ... |
| 88 | B60G | | VEHICLE SUSPENSION ARRANGEMENTS (air-cushion vehicles B60V; connections between ... |
| 89 | B60Q | | ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREO... |
| 90 | A63B | | APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BAL... |
| 91 | B60J | | WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; R... |
| 92 | A45C | | PURSES; LUGGAGE; HAND CARRIED BAGS... |
| 93 | A63F | | CARD, BOARD OR ROULETTE GAMES; INDOOR GAMES USING SMALL MOVING PLAYING BODIES; V... |
| 94 | G01K | | MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS ... |
| 95 | B60W | | CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; C... |
| 96 | H04Q | | SELECTING (switches, relays, selectors H01H; wireless communication networks H04... |
| 97 | C23C | | COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREA... |
| 98 | D03D | | WOVEN FABRICS; METHODS OF WEAVING; LOOMS... |
| 99 | H01B | | CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INS... |
| 100 | D 97 | | Class ID not recognized. |
