Top IPC subclasses
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1
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G06K
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52
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Recognition of data; presentation of data; record carriers; handling record carriers
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2
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B41M
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8
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printing, duplicating, marking, or copying processescolour printing
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3
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B23H
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6
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Working of metal by the action of a high concentration of electric current on a workpiece using an electrode which takes the place of a tool; such working combined with other forms of working of metal
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4
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B65D
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4
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Containers for storage or transport of articles or materials, e.g. bags, barrels, bottles, boxes, cans, cartons, crates, drums, jars, tanks, hoppers, forwarding containers; accessories, closures, or fittings therefor; packaging elements; packages
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5
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E04C
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3
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Structural elements; building materials
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6
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G08G
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2
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traffic control systems
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7
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F03C
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2
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positive-displacement engines driven by liquids
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8
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E01B
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2
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permanent waypermanent-way toolsmachines for making railways of all kinds
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9
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B23K
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2
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soldering or unsolderingweldingcladding or plating by soldering or weldingcutting by applying heat l
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10
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E04B
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2
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General building constructions; walls, e.g. partitions; roofs; floors; ceilings; insulation or other protection of buildings
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11
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F03D
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1
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Wind motors
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12
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H04N
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1
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pictorial communication, e.g. television
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|
13
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A63H
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1
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toys, e.g. tops, dolls, hoops, building blocks
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14
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A44C
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1
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jewellerybraceletsother personal adornmentscoins
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15
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B05D
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1
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processes for applying liquids or other fluent materials to surfaces, in general
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16
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B67B
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1
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applying closure members to bottles, jars, or similar containersopening closed containers
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17
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B42D
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1
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booksbook coversloose leavesprinted matter of special format or style not otherwise provided fordevi
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18
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F01M
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1
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lubricating of machines or engines in generallubricating internal-combustion enginescrankcase ventil
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19
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F25B
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1
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refrigeration machines, plants, or systemscombined heating and refrigeration systemsheat pump system
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