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Class Information
Number: 257/E29.192
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Semiconductors devices adapted for rectifying, amplifying, oscillating, or switching, capacitors, or resistors with at least one potential-jump barrier or surface barrier (epo) > Types of semiconductor device (epo) > Controllable by only signal applied to control electrode (e.g., base of bipolar transistor, gate of field-effect transistor) (epo) > Bipolar device (epo) > Transistor-type device (i.e., able to continuously respond to applied control signal) > Bipolar junction transistor > Hetero-junction transistor (epo) > Vertical transistors (epo) > Resonant tunneling transistors (epo)
Description: This subclass is indented under subclass E29.189. This subclass is substantially the same in scope as ECLA classification H01L29/737B6.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8604772 MEMS-based resonant tunneling devices and arrays of such devices for electric field sensing Dec. 10, 2013
8395162 Semiconductor device with multi-layer gate electrode Mar. 12, 2013
8368380 Devices and methods for electric field sensing Feb. 5, 2013
8237229 Method and apparatus for buried-channel semiconductor device Aug. 7, 2012
7893426 Single-charge tunnelling device Feb. 22, 2011
7875958 Quantum tunneling devices and circuits with lattice-mismatched semiconductor structures Jan. 25, 2011
7800093 Resistive memory including buried word lines Sep. 21, 2010
7795609 Densely stacked and strain-compensated quantum dot active regions Sep. 14, 2010
7534710 Coupled quantum well devices (CQWD) containing two or more direct selective contacts and methods of making same May. 19, 2009
6929987 Microelectronic device fabrication method Aug. 16, 2005
6737684 Bipolar transistor and semiconductor device May. 18, 2004
6573527 Quantum semiconductor device including quantum dots and a fabrication process thereof Jun. 3, 2003
6465804 High power bipolar transistor with emitter current density limiter Oct. 15, 2002
6118136 Superlatticed negative-differential-resistance functional transistor Sep. 12, 2000
5981986 Semiconductor device having a heterojunction Nov. 9, 1999
5920231 Negative differential resistance amplifier Jul. 6, 1999
5828077 Long-period superlattice resonant tunneling transistor Oct. 27, 1998
5825048 Semiconductor functional device and electronic circuit provided with the same Oct. 20, 1998
5773842 Resonant-tunnelling hot electron transistor Jun. 30, 1998
5770869 Resonant tunneling hot electron device Jun. 23, 1998
5705825 Resonant tunneling bipolar transistor Jan. 6, 1998
5629215 Method of fabricating and contacting ultra-small three terminal semiconductor devices May. 13, 1997
5606178 Bipolar resonant tunneling transistor Feb. 25, 1997
5554860 Resonant tunneling transistor noise generator Sep. 10, 1996
5548138 Semiconductor device with reduced tunnel resistance and circuitry using the same Aug. 20, 1996
5489785 Band-to-band resonant tunneling transistor Feb. 6, 1996
5389804 Resonant-tunneling heterojunction bipolar transistor device Feb. 14, 1995
5389798 High-speed semiconductor device with graded collector barrier Feb. 14, 1995
5349202 Tunneling transistor Sep. 20, 1994
5280182 Resonant tunneling transistor with barrier layers Jan. 18, 1994
5270225 Method of making a resonant tunneling semiconductor device Dec. 14, 1993
5179037 Integration of lateral and vertical quantum well transistors in the same epitaxial stack Jan. 12, 1993
5153693 Circuit including bistable, bipolar transistor Oct. 6, 1992
5151618 Resonant-tunneling heterojunction bipolar transistor device Sep. 29, 1992
5138408 Resonant tunneling hot carrier transistor Aug. 11, 1992
5132746 Biaxial-stress barrier shifts in pseudomorphic tunnel devices Jul. 21, 1992
5113231 Quantum-effect semiconductor devices May. 12, 1992
5111265 Collector-top type transistor causing no deterioration in current gain May. 5, 1992
5031005 Semiconductor device Jul. 9, 1991
5027179 Resonant-tunneling heterojunction bipolar transistor device Jun. 25, 1991
5024958 Compound semiconductor device and a manufacturing method thereof Jun. 18, 1991
5003366 Hetero-junction bipolar transistor Mar. 26, 1991
4999697 Sequential-quenching resonant-tunneling transistor Mar. 12, 1991
4967252 Compound semiconductor bipolar device with side wall contact Oct. 30, 1990
4937204 Method of making a superlattice heterojunction bipolar device Jun. 26, 1990
4926232 Resonant-tunneling bipolar transistor May. 15, 1990
4866488 Ballistic transport filter and device Sep. 12, 1989
4849799 Resonant tunneling transistor Jul. 18, 1989
4835579 Semiconductor apparatus May. 30, 1989
4825264 Resonant tunneling semiconductor device Apr. 25, 1989

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