Patent classifications
H
ELECTRICITY
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H10
SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
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H10K
ORGANIC ELECTRIC SOLID-STATE DEVICES
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85/00
Organic materials used in the body or electrodes of devices covered by this subclass
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H10K85/60
Organic compounds having low molecular weight
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H10K85/649
Aromatic compounds comprising a hetero atom
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H10K85/657
Polycyclic condensed heteroaromatic hydrocarbons
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H10K85/6572
comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole
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