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Class Information
Number: 257/E47.003
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Bulk negative resistance effect devices, e.g., gunn-effect devices, processes, or apparatus peculiar to manufacture or treatment of such devices, or of parts thereof (epo) > Gunn-effect devices or transferred electron devices (epo) > Controlled by electromagnetic radiation (epo)
Description: This subclass is indented under subclass E47.002. This subclass is substantially the same in scope as ECLA classification H01L47/02B.

Patents under this class:

Patent Number Title Of Patent Date Issued
7456082 Method for producing silicon single crystal and silicon single crystal Nov. 25, 2008
7087921 Active electronic device and electronic apparatus Aug. 8, 2006

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