Top IPC subclasses
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1
|
H01L
|
21
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Semiconductor devices; electric solid state devices not otherwise provided for
|
|
2
|
B82B
|
13
|
nano-structuresmanufacture or treatment thereof
|
|
3
|
B82Y
|
7
|
|
|
4
|
G02B
|
4
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optical elements, systems, or apparatus
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|
5
|
C25D
|
2
|
processes for the electrolytic or electrophoretic production of coatingselectroformingjoining workpi
|
|
6
|
G11C
|
1
|
static stores
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|
7
|
H01S
|
1
|
devices using stimulated emission
|
|
8
|
C25F
|
1
|
processes for the electrolytic removal of materials from objectsapparatus therefor
|
|
9
|
G01N
|
1
|
Investigating or analysing materials by determining their chemical or physical properties
|
|
10
|
C01D
|
1
|
compounds of alkali metals, i.e. lithium, sodium, potassium, rubidium, caesium, or francium
|
|
11
|
B02B
|
1
|
preparing grain for millingrefining granular fruit to commercial products by working the surface
|
|
12
|
B81C
|
1
|
processes or apparatus specially adapted for the manufacture or treatment of micro-structural device
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|
13
|
B32B
|
1
|
layered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb,
|
|
14
|
C01F
|
1
|
compounds of the metals beryllium, magnesium, aluminium, calcium, strontium, barium, radium, thorium
|
|
15
|
C23C
|
1
|
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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