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Class Information
Number: 257/592
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Bipolar transistor structure > With base region having specified doping concentration profile or specified configuration (e.g., inactive base more heavily doped than active base or base region has constant doping concentration portion (e.g., epitaxial base))
Description: Subject matter wherein the device has a base region with a cross section that has a specified impurity dopant concentration across it or has a particular geometric configuration.










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

Patent Number Title Of Patent Date Issued
8710627 Uni-directional transient voltage suppressor (TVS) Apr. 29, 2014
8686424 Bipolar transistor manufacturing method, bipolar transistor and integrated circuit Apr. 1, 2014
8669603 Semiconductor constructions Mar. 11, 2014
8669640 Bipolar transistor Mar. 11, 2014
8664697 Transistor device Mar. 4, 2014
8643146 Semiconductor device Feb. 4, 2014
8637959 Vertical parasitic PNP device in a BiCMOS process and manufacturing method of the same Jan. 28, 2014
8624355 Semiconductor device and method for manufacturing the same Jan. 7, 2014
8623749 Reduction of stored charge in the base region of a bipolar transistor to improve switching speed Jan. 7, 2014
8609502 Method of manufacturing semiconductor device including insulated gate bipolar transistor and diode Dec. 17, 2013
8569865 Integrated circuit and production method Oct. 29, 2013
8569840 Bipolar transistor integrated with metal gate CMOS devices Oct. 29, 2013
8552532 Self aligned structures and design structure thereof Oct. 8, 2013
8546230 Bipolar transistor with a collector having a protected outer edge portion for reduced based-collector junction capacitance and a method of forming the transistor Oct. 1, 2013
8530288 Methods of forming memory arrays and semiconductor constructions Sep. 10, 2013
8525300 Tunable ESD protection device Sep. 3, 2013
8525187 Insulated gate bipolar transistor Sep. 3, 2013
8525233 SiGe heterojunction bipolar transistor with a shallow out-diffused P+ emitter region Sep. 3, 2013
8525301 Method and apparatus for fabricating heterojunction bipolar transistors with simultaneous low base resistance and short base transit time Sep. 3, 2013
8507352 Method of manufacturing semiconductor device including insulated gate bipolar transistor and diode Aug. 13, 2013
8502236 Insulated gate field effect transistor Aug. 6, 2013
8497527 Device having active region with lower electron concentration Jul. 30, 2013
8487408 Semiconductor device having bipolar transistor Jul. 16, 2013
8482102 Semiconductor device Jul. 9, 2013
8455966 Magnetic phase change logic Jun. 4, 2013
8455306 Methods of forming voltage limiting devices Jun. 4, 2013
8426944 Insulated gate bipolar transistor Apr. 23, 2013
8420475 Parasitic vertical PNP bipolar transistor and its fabrication method in BiCMOS process Apr. 16, 2013
8421145 Power semiconductor device Apr. 16, 2013
8395188 Silicon-germanium heterojunction bipolar transistor Mar. 12, 2013
8390059 Power semiconductor device Mar. 5, 2013
8357985 Bipolar transistor with guard region Jan. 22, 2013
8350352 Bipolar transistor Jan. 8, 2013
8344481 Bipolar transistors with hump regions Jan. 1, 2013
8344436 Semiconductor constructions and electronic systems Jan. 1, 2013
8299500 Silicon germanium heterojunction bipolar transistor having interstitial trapping layer in base region Oct. 30, 2012
8263469 Methods of forming a bipolar transistor Sep. 11, 2012
8258545 Integrated circuit including a bipolar transistor and methods of making the same Sep. 4, 2012
8159048 Bipolar junction transistor geometry Apr. 17, 2012
8129820 Semiconductor device Mar. 6, 2012
8120136 Bipolar transistor Feb. 21, 2012
8093132 Method of manufacturing a bipolar junction transistor Jan. 10, 2012
8058703 Semiconductor transistor device and method of manufacturing the same Nov. 15, 2011
8058704 Bipolar transistor Nov. 15, 2011
8035196 Methods of counter-doping collector regions in bipolar transistors Oct. 11, 2011
8022506 SOI device with more immunity from substrate voltage Sep. 20, 2011
8013376 Memory arrays, semiconductor constructions and electronic systems with transistor gates extending partially over SOI and unit cells within active region pedestals Sep. 6, 2011
8013424 Semiconductor device and method of fabricating the same Sep. 6, 2011
7994017 Method of manufacturing silicon carbide self-aligned epitaxial MOSFET for high powered device applications Aug. 9, 2011
7952166 Semiconductor device with switch electrode and gate electrode and method for switching a semiconductor device May. 31, 2011

1 2 3 4 5 6 7 8 9 10 11










 
 
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