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Class Information
Number: 257/E21.399
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Processes or apparatus adapted for manufacture or treatment of semiconductor or solid-state devices or of parts thereof (epo) > Manufacture or treatment of semiconductor device (epo) > Device having at least one potential-jump barrier or surface barrier, e.g., pn junction, depletion layer, carrier concentration layer (epo) > Device having semiconductor body comprising group iv elements or group iii-v compounds with or without impurities, e.g., doping materials (epo) > Multi-step process for the manufacture of unipolar device (epo) > Active layer is group iii-v compound (epo) > Transistor-like structure, e.g., hot electron transistor (het), metal base transistor (mbt), resonant tunneling hot electron transistor (rhet), resonant tunneling transistor (rtt), bulk barrier transistor (bbt), planar doped barrier transistor (pdbt), charge injection transistor (chint) (epo)
Description: This subclass is indented under subclass E21.398. This subclass is substantially the same in scope as ECLA classification H01L21/334P2.

Patents under this class:

Patent Number Title Of Patent Date Issued
8580627 Compound semiconductor device and method for fabricating the same Nov. 12, 2013
8164116 Semiconductor device with hetero semiconductor region and method of manufacturing the same Apr. 24, 2012
7339207 Semiconductor device including a group III-V nitride semiconductor Mar. 4, 2008
7291527 Work function control of metals Nov. 6, 2007
7098490 GaN DHFET Aug. 29, 2006
7078743 Field effect transistor semiconductor device Jul. 18, 2006
6139483 Method of forming lateral resonant tunneling devices Oct. 31, 2000
5962864 Gated resonant tunneling device and fabricating method thereof Oct. 5, 1999
5880484 Lateral resonant tunneling transistor having two non-symmetric quantum dots Mar. 9, 1999
5629215 Method of fabricating and contacting ultra-small three terminal semiconductor devices May. 13, 1997
5593908 Lateral resonant tunneling Jan. 14, 1997
5552330 Resonant tunneling fet and methods of fabrication Sep. 3, 1996
5548129 Quantum well structure with self-aligned gate and method of making the same Aug. 20, 1996
5504347 Lateral resonant tunneling device having gate electrode aligned with tunneling barriers Apr. 2, 1996
5489539 Method of making quantum well structure with self-aligned gate Feb. 6, 1996
5436468 Ordered mixed crystal semiconductor superlattice device Jul. 25, 1995
5408106 Lateral resonant tunneling transistor with heterojunction barriers Apr. 18, 1995
5234848 Method for fabricating lateral resonant tunneling transistor with heterojunction barriers Aug. 10, 1993

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