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Class Information
Number: 257/E29.034
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) > Electrical characteristics due to properties of entire semiconductor body rather than just surface region (epo) > Characterized by specified shape or size of pn junction or by specified impurity concentration gradient within the device (epo) > With semiconductor regions connected to electrode carrying current to be rectified, amplified or switched and such electrode being part of semiconductor device which comprises three or more electrodes (epo) > Collector regions of bipolar transistors (epo)
Description: This subclass is indented under subclass E29.029. This subclass is substantially the same in scope as ECLA classification H01L29/08C.

Sub-classes under this class:

Class Number Class Name Patents
257/E29.035 Pedestal collectors (epo) 30

Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8674480 High voltage bipolar transistor with pseudo buried layers Mar. 18, 2014
8536680 ESD protection circuit and semiconductor device Sep. 17, 2013
8420495 Manufacturing approach for collector and a buried layer of bipolar transistor Apr. 16, 2013
8222114 Manufacturing approach for collector and a buried layer of bipolar transistor Jul. 17, 2012
8044488 Semiconductor device having particular impurity density characteristics Oct. 25, 2011
8022496 Semiconductor structure and method of manufacture Sep. 20, 2011
8004023 Semiconductor device and method of fabricating the same Aug. 23, 2011
8003475 Method for fabricating a transistor structure Aug. 23, 2011
8003473 Bipolar transistor with silicided sub-collector Aug. 23, 2011
7872326 Array of vertical bipolar junction transistors, in particular selectors in a phase change memory device Jan. 18, 2011
7679164 Bipolar transistor with silicided sub-collector Mar. 16, 2010
7656002 Integrated bipolar transistor and field effect transistor Feb. 2, 2010
7619299 Semiconductor device and method of manufacturing the same Nov. 17, 2009
7420228 Bipolar transistor comprising carbon-doped semiconductor Sep. 2, 2008
7371650 Method for producing a transistor structure May. 13, 2008
7323390 Semiconductor device and method for production thereof Jan. 29, 2008
7075126 Transistor structure with minimized parasitics and method of fabricating the same Jul. 11, 2006
7071500 Semiconductor device and manufacturing method for the same Jul. 4, 2006
7064416 Semiconductor device and method having multiple subcollectors formed on a common wafer Jun. 20, 2006
7064417 Semiconductor device including a bipolar transistor Jun. 20, 2006
7037799 Breakdown voltage adjustment for bipolar transistors May. 2, 2006
7030429 Hetero-junction bipolar transistor and the method for producing the same Apr. 18, 2006
7022578 Heterojunction bipolar transistor using reverse emitter window Apr. 4, 2006
7015085 Super self-aligned collector device for mono-and hetero bipolar junction transistors and method of making same Mar. 21, 2006
7012288 Heterojunction bipolar transistor having non-uniformly doped collector for improved safe-operating area Mar. 14, 2006
7001806 Semiconductor structure with increased breakdown voltage and method for producing the semiconductor structure Feb. 21, 2006
6992337 Gallium arsenide antimonide (GaAsSB)/indium phosphide (InP) heterojunction bipolar transistor (HBT) having reduced tunneling probability Jan. 31, 2006
6989557 Bipolar junction transistor and fabricating method Jan. 24, 2006
6979885 Devices with patterned wells and method for forming same Dec. 27, 2005
6964907 Method of etching a lateral trench under an extrinsic base and improved bipolar transistor Nov. 15, 2005
6949764 Fully-depleted-collector silicon-on-insulator (SOI) bipolar transistor useful alone or in SOI BiCMOS Sep. 27, 2005
6940357 Bipolar transistor, for voltage controlled oscillator using a capacitance adjustment line Sep. 6, 2005
6936519 Double polysilicon bipolar transistor and method of manufacture therefor Aug. 30, 2005
6917077 Protection diode for improved ruggedness of a radio frequency power transistor and self-defining method to manufacture such protection diode Jul. 12, 2005
6911715 Bipolar transistors and methods of manufacturing the same Jun. 28, 2005
6905935 Method for fabricating a vertical bipolar junction transistor Jun. 14, 2005
6894366 Bipolar junction transistor with a counterdoped collector region May. 17, 2005
6894367 Vertical bipolar transistor May. 17, 2005
6888226 Semiconductor structure and method for improving its ability to withstand electrostatic discharge (ESD) and overloads May. 3, 2005
6888180 Hetero-junction bipolar transistor and a method for manufacturing the same May. 3, 2005
6881988 Heterojunction bipolar transistor and semiconductor integrated circuit device using the same Apr. 19, 2005
6869851 Transistors formed with grid or island implantation masks to form reduced diffusion-depth regions without additional masks and process steps Mar. 22, 2005
6849871 Fully-depleted-collector silicon-on-insulator (SOI) bipolar transistor useful alone or in SOI BiCMOS Feb. 1, 2005
6847094 Contact structure on a deep region formed in a semiconductor substrate Jan. 25, 2005
6838348 Integrated process for high voltage and high performance silicon-on-insulator bipolar devices Jan. 4, 2005
6828603 Hetero-bipolar transistor with a sub-collector layer having a first portion and plural second portions Dec. 7, 2004
6815801 Vertical bipolar transistor and a method of manufacture therefor including two epitaxial layers and a buried layer Nov. 9, 2004
6812533 SOI based bipolar transistor having a majority carrier accumulation layer as subcollector Nov. 2, 2004
6809400 Composite pinin collector structure for heterojunction bipolar transistors Oct. 26, 2004
6806152 Retrograde doped buried layer transistor and method for producing the same Oct. 19, 2004

1 2 3 4 5 6

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