Top IPC subclasses
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1
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G03G
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12
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Electrography; electrophotography; magnetography
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2
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G01B
|
8
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measuring length, thickness, or similar linear dimensionsmeasuring anglesmeasuring areasmeasuring ir
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3
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C07C
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3
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Acyclic or carbocyclic compounds
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4
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C08F
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3
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macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
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5
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G03C
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3
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photosensitive materials for photographic purposesphotographic processes, e.g. cine, x-ray, colour,
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6
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H01L
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2
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Semiconductor devices; electric solid state devices not otherwise provided for
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7
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C23C
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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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