Top IPC subclasses
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1
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G01N
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4
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Investigating or analysing materials by determining their chemical or physical properties
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|
2
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G03G
|
1
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Electrography; electrophotography; magnetography
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|
3
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H01L
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1
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Semiconductor devices; electric solid state devices not otherwise provided for
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4
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G01B
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1
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measuring length, thickness, or similar linear dimensionsmeasuring anglesmeasuring areasmeasuring ir
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5
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G03F
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1
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photomechanical production of textured or patterned surfaces, e.g. for printing, for processing of s
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