Top IPC subclasses
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1
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G03G
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32
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Electrography; electrophotography; magnetography
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|
2
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G01B
|
12
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measuring length, thickness, or similar linear dimensionsmeasuring anglesmeasuring areasmeasuring ir
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|
3
|
C07C
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6
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Acyclic or carbocyclic compounds
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|
4
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G01N
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6
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Investigating or analysing materials by determining their chemical or physical properties
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|
5
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C08F
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6
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macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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6
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B03C
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5
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magnetic or electrostatic separation of solid materials from solid materials or fluidsseparation by
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|
7
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G03C
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5
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photosensitive materials for photographic purposesphotographic processes, e.g. cine, x-ray, colour,
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|
8
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H01L
|
4
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Semiconductor devices; electric solid state devices not otherwise provided for
|
|
9
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G03H
|
3
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holographic processes or apparatus
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|
10
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G01J
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3
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measurement of intensity, velocity, spectral content, polarisation, phase or pulse characteristics o
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|
11
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B65B
|
2
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machines, apparatus or devices for, or methods of, packaging articles or materialsunpacking
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|
12
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B01J
|
2
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Chemical or physical processes, e.g. catalysis, colloid chemistry; their relevant apparatus
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|
13
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G09B
|
2
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educational or demonstration appliancesappliances for teaching, or communicating with, the blind, de
|
|
14
|
C01B
|
1
|
non-metallic elementscompounds thereof
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|
15
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B82B
|
1
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nano-structuresmanufacture or treatment thereof
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|
16
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C01G
|
1
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Compounds containing metals not covered by subclasses C01D or C01F
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|
17
|
E01H
|
1
|
street cleaningcleaning of permanent wayscleaning beachescleaning landdispersing fog in general
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|
18
|
A01G
|
1
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Horticulture; cultivation of vegetables, flowers, rice, fruit, vines, hops, or seaweed; forestry; watering
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|
19
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B65D
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1
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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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|
20
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C23C
|
1
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Coating metallic material; coating material with metallic material; surface treatment of metallic material by diffusion into the surface, by chemical conversion or substitution; coating by vacuum evaporation, by sputtering, by ion implantation or by chemical vapour deposition, in general
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