Top IPC subclasses
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1
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H01L
|
2
|
Semiconductor devices; electric solid state devices not otherwise provided for
|
|
2
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B05D
|
2
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processes for applying liquids or other fluent materials to surfaces, in general
|
|
3
|
G01N
|
2
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Investigating or analysing materials by determining their chemical or physical properties
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|
4
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B82B
|
1
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nano-structuresmanufacture or treatment thereof
|
|
5
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C01G
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1
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Compounds containing metals not covered by subclasses C01D or C01F
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|
6
|
B32B
|
1
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layered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb,
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