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Class Information
Number: 257/E21.375
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 manufacture of device of bipolar type, e.g., diodes, transistors, thyristors, resistors, capacitors) (epo) > Device comprising three or more electrodes (epo) > Transistor (epo) > Silicon vertical transistor (epo)
Description: This subclass is indented under subclass E21.037. This subclass is substantially the same in scope as ECLA classification H01L21/331F.










Sub-classes under this class:

Class Number Class Name Patents
257/E21.378 Inverse transistor (epo) 9
257/E21.377 Mesa-planar transistor (epo) 21
257/E21.376 Planar transistor (epo) 4
257/E21.38 Where main current goes through whole of silicon substrate, e.g., power bipolar transistor (epo) 41
257/E21.379 With single crystalline emitter, collector or base including extrinsic, link or graft base formed on th e silicon substrate, e.g., by epitaxy, recrystallization, after insulating device isolation (epo) 241


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13

Patent Number Title Of Patent Date Issued
8637959 Vertical parasitic PNP device in a BiCMOS process and manufacturing method of the same Jan. 28, 2014
8629029 Vertical SOI bipolar junction transistor and manufacturing method thereof Jan. 14, 2014
8609488 Methods of forming a vertical transistor and at least a conductive line electrically coupled therewith Dec. 17, 2013
8592276 Fabrication method of vertical silicon nanowire field effect transistor Nov. 26, 2013
8519475 Semiconductor device Aug. 27, 2013
8513087 Processes for forming isolation structures for integrated circuit devices Aug. 20, 2013
8486797 Bipolar junction transistor with epitaxial contacts Jul. 16, 2013
8461010 Semiconductor device and method for manufacturing same Jun. 11, 2013
8455346 Method for manufacturing nonvolatile memory device Jun. 4, 2013
8450175 Methods of forming a vertical transistor and at least a conductive line electrically coupled therewith May. 28, 2013
8361867 Biaxial strained field effect transistor devices Jan. 29, 2013
8344437 Semiconductor device with vertical channel transistor Jan. 1, 2013
8329538 Shielded gate trench FET with an inter-electrode dielectric having a low-k dielectric therein Dec. 11, 2012
8324682 Dynamic random access memory cell and array having vertical channel transistor Dec. 4, 2012
7910435 Method of manufacturing a semiconductor device having a channel extending vertically Mar. 22, 2011
7859026 Vertical semiconductor device Dec. 28, 2010
7843002 Fully isolated high-voltage MOS device Nov. 30, 2010
RE41477 Semiconductor device with a reduced mask count buried layer Aug. 10, 2010
7723172 Methods for manufacturing a trench type semiconductor device having a thermally sensitive refill material May. 25, 2010
7709889 Semiconductor device with improved breakdown properties and manufacturing method thereof May. 4, 2010
7679121 Ultra scalable high speed heterojunction vertical n-channel MISFETs and methods thereof Mar. 16, 2010
7678652 MOSFET-type semiconductor device, and method of manufacturing the same Mar. 16, 2010
7670911 Method for manufacturing vertical MOS transistor Mar. 2, 2010
7667295 Semiconductor device Feb. 23, 2010
7619299 Semiconductor device and method of manufacturing the same Nov. 17, 2009
7615802 Semiconductor structure comprising a highly doped conductive channel region and method for producing a semiconductor structure Nov. 10, 2009
7615805 Versatile system for optimizing current gain in bipolar transistor structures Nov. 10, 2009
7586130 Vertical field effect transistor using linear structure as a channel region and method for fabricating the same Sep. 8, 2009
7563686 Method for forming a memory device with a recessed gate Jul. 21, 2009
7489003 Semiconductor device having a channel extending vertically Feb. 10, 2009
7439572 Stacked gate memory cell with erase to gate, array, and method of manufacturing Oct. 21, 2008
7439558 Method and system for controlled oxygen incorporation in compound semiconductor films for device performance enhancement Oct. 21, 2008
7439137 Method for manufacturing semiconductor device Oct. 21, 2008
7414298 Super self-aligned collector device for mono-and hetero bipolar junction transistors, and method of making same Aug. 19, 2008
7410856 Methods of forming vertical transistors Aug. 12, 2008
7364997 Methods of forming integrated circuitry and methods of forming local interconnects Apr. 29, 2008
7347228 Method of making semiconductor devices Mar. 25, 2008
7288815 Semiconductor device and manufacturing method thereof Oct. 30, 2007
7276754 Annular gate and technique for fabricating an annular gate Oct. 2, 2007
7271048 Method for manufacturing trench MOSFET Sep. 18, 2007
7271067 Voltage sustaining layer with opposite-doped islands for semiconductor power devices Sep. 18, 2007
7259048 Vertical replacement-gate silicon-on-insulator transistor Aug. 21, 2007
7253070 Transistor structure with minimized parasitics and method of fabricating the same Aug. 7, 2007
7208370 Method for fabricating a vertical transistor in a trench, and vertical transistor Apr. 24, 2007
7064361 NPN transistor having reduced extrinsic base resistance and improved manufacturability Jun. 20, 2006
7060583 Method for manufacturing a bipolar transistor having a polysilicon emitter Jun. 13, 2006
7045876 Amorphizing ion implant method for forming polysilicon emitter bipolar transistor May. 16, 2006
7045845 Self-aligned vertical gate semiconductor device May. 16, 2006
7037799 Breakdown voltage adjustment for bipolar transistors May. 2, 2006
7034379 Carbide emitter mask etch stop Apr. 25, 2006

1 2 3 4 5 6 7 8 9 10 11 12 13










 
 
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