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Class Information
Number: 257/E21.449
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) > Field-effect transistor (epo) > With pn junction or heterojunction gate (epo) > Active layer is group iii-v compound (epo)
Description: This subclass is indented under subclass E21.445. This subclass is substantially the same in scope as ECLA classification H01L21/337P.

Patents under this class:
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Patent Number Title Of Patent Date Issued
8686565 Stacked chip assembly having vertical vias Apr. 1, 2014
8659162 Semiconductor device having an interconnect structure with TSV using encapsulant for structural support Feb. 25, 2014
8629001 Semiconductor device and method of manufacturing semiconductor device Jan. 14, 2014
8609517 MOCVD for growing III-V compound semiconductors on silicon substrates Dec. 17, 2013
8461657 Methods for forming a micro electro-mechanical device Jun. 11, 2013
8421203 Integrated circuit packaging system with foldable substrate and method of manufacture thereof Apr. 16, 2013
8183134 Semiconductor device and manufacturing method with improved epitaxial quality of III-V compound on silicon surfaces May. 22, 2012
8174106 Through board stacking of multiple LGA-connected components May. 8, 2012
8101458 Method of forming monolithic CMOS-MEMS hybrid integrated, packaged structures Jan. 24, 2012
8101461 Stacked semiconductor device and method of manufacturing the same Jan. 24, 2012
7897422 Semiconductor light-emitting device and a method to produce the same Mar. 1, 2011
7786574 Microelectronic imaging units Aug. 31, 2010
7498202 Method for die attaching Mar. 3, 2009
7470568 Method of manufacturing a semiconductor device Dec. 30, 2008
7186591 Method of encapsulating an assembly with a low temperature silicone rubber compound Mar. 6, 2007
6936900 Integrated transistor devices Aug. 30, 2005
6897137 Process for fabricating ultra-low contact resistances in GaN-based devices May. 24, 2005
6893947 Advanced RF enhancement-mode FETs with improved gate properties May. 17, 2005
6821829 Method of manufacturing a semiconductor component and semiconductor component thereof Nov. 23, 2004
6624452 Gallium nitride-based HFET and a method for fabricating a gallium nitride-based HFET Sep. 23, 2003
6576927 Semiconductor device and GaN-based field effect transistor for use in the same Jun. 10, 2003
6524937 Selective T-gate process Feb. 25, 2003
6451711 Epitaxial wafer apparatus Sep. 17, 2002
6445015 Metal sulfide semiconductor transistor devices Sep. 3, 2002
6229197 Epitaxial overgrowth method and devices May. 8, 2001
6201269 Junction field effect transistor and method of producing the same Mar. 13, 2001
6100549 High breakdown voltage resurf HFET Aug. 8, 2000
6097046 Vertical field effect transistor and diode Aug. 1, 2000
5982036 Multi-layered structure for ohmic electrode fabrication Nov. 9, 1999
5910665 Low capacitance power VFET method and device Jun. 8, 1999
5889298 Vertical JFET field effect transistor Mar. 30, 1999
5866925 Gallium nitride junction field-effect transistor Feb. 2, 1999
5767007 Method for fabricating ohmic electrode and multi-layered structure for ohmic fabricating electrode Jun. 16, 1998
5747842 Epitaxial overgrowth method and devices May. 5, 1998
5712189 Epitaxial overgrowth method Jan. 27, 1998
5700703 Method of fabricating buried control elements in semiconductor devices Dec. 23, 1997
5624860 Vertical field effect transistor and method Apr. 29, 1997
5554561 Epitaxial overgrowth method Sep. 10, 1996
5508535 Compound semiconductor devices Apr. 16, 1996
5477066 Heterojunction bipolar transistor Dec. 19, 1995
5468661 Method of making power VFET device Nov. 21, 1995
5411914 III-V based integrated circuits having low temperature growth buffer or passivation layers May. 2, 1995
5373191 Semiconductor device and method of producing the same Dec. 13, 1994
5342795 Method of fabricating power VFET gate-refill Aug. 30, 1994
5332918 Ultra-high-speed photoconductive devices using semi-insulating layers Jul. 26, 1994
5331185 Field effect transistor having a GaInAs/GaAs quantum well structure Jul. 19, 1994
5286662 Method for manufacturing field effect transistor Feb. 15, 1994
5281543 Fabrication method for quantum devices in compound semiconductor layers Jan. 25, 1994
5248626 Method for fabricating self-aligned gate diffused junction field effect transistor Sep. 28, 1993
5231037 Method of making a power VFET device using a p+ carbon doped gate layer Jul. 27, 1993

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