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Class Information
Number: 257/E21.35
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)
Description: This subclass is indented under subclass E21.085. This subclass is substantially the same in scope as ECLA classification H01L21/328.

Sub-classes under this class:

Class Number Class Name Patents
257/E21.351 Device comprising one or two electrodes, e.g., diode, resistor or capacitor with pn or schottky junctions (epo) 60
257/E21.369 Device comprising three or more electrodes (epo) 4

Patents under this class:

Patent Number Title Of Patent Date Issued
8692244 Semiconductor device Apr. 8, 2014
8664741 High voltage resistor with pin diode isolation Mar. 4, 2014
8581365 Bipolar junction transistor with layout controlled base and associated methods of manufacturing Nov. 12, 2013
8530953 Power MOS transistor device and switch apparatus comprising the same Sep. 10, 2013
8524543 Thyristor-based memory cells, devices and systems including the same and methods for forming the same Sep. 3, 2013
8507353 Method of forming semiconductor device having self-aligned plug Aug. 13, 2013
8445926 LED package, method of fabricating the same, and backlight unit having the same May. 21, 2013
8335106 Superlattice device, manufacturing method thereof, solid-state memory including superlattice device, data processing system, and data processing device Dec. 18, 2012
8293550 Light emitting device, light emitting system having the same, and fabricating method of the light emitting device and the light emitting system Oct. 23, 2012
8227319 Bipolar junction transistor having a high germanium concentration in a silicon-germanium layer and a method for forming the bipolar junction transistor Jul. 24, 2012
8148251 Forming a semiconductor device Apr. 3, 2012
8088656 Fabricating ESD devices using MOSFET and LDMOS Jan. 3, 2012
8076211 Fabricating bipolar junction select transistors for semiconductor memories Dec. 13, 2011
8026146 Method of manufacturing a bipolar transistor Sep. 27, 2011
8021944 Method for fabricating semiconductor device Sep. 20, 2011
7939414 Ion implantation and process sequence to form smaller base pick-up May. 10, 2011
7932133 Circuit protection method using diode with improved energy impulse rating Apr. 26, 2011
7923343 Capacitor of semiconductor device and method for forming the same Apr. 12, 2011
7869255 Non-volatile memory devices, method of manufacturing and method of operating the same Jan. 11, 2011
7824997 Membrane suspended MEMS structures Nov. 2, 2010
7807539 Ion implantation and process sequence to form smaller base pick-up Oct. 5, 2010
7781815 Thin-film element, display device and memory cell using the thin-film element, and their fabrication methods Aug. 24, 2010
7687327 Methods for manufacturing RFID tags and structures formed therefrom Mar. 30, 2010
7671447 Bipolar transistor and method of manufacturing the same Mar. 2, 2010
7662692 Integrated process for thin film resistors with silicides Feb. 16, 2010
7642169 Method of making a bipolar junction transistor Jan. 5, 2010
7595249 Bipolar transistors with vertical structures Sep. 29, 2009
7564116 Printed circuit board with embedded capacitors therein and manufacturing process thereof Jul. 21, 2009
7476553 Transfer base substrate and method of semiconductor device Jan. 13, 2009
7465969 Bipolar transistor and method for fabricating the same Dec. 16, 2008
7442616 Method of manufacturing a bipolar transistor and bipolar transistor thereof Oct. 28, 2008
7410838 Fabrication methods for memory cells Aug. 12, 2008
7405167 Method of manufacturing nonvolatile organic memory device and nonvolatile organic memory device manufactured by the same Jul. 29, 2008
7384802 ESD protection device for high voltage Jun. 10, 2008
7378326 Printed circuit board with embedded capacitors therein and manufacturing process thereof May. 27, 2008
7371650 Method for producing a transistor structure May. 13, 2008
7365412 Vertical parallel plate capacitor using spacer shaped electrodes and method for fabrication thereof Apr. 29, 2008
7329915 Rectifying contact to an n-type oxide material or a substantially insulating oxide material Feb. 12, 2008
7316941 Semiconductor device with a MOSFET formed in close proximity to a bipolar device and method of manufacture Jan. 8, 2008
7303973 ALD process for capacitor dielectric Dec. 4, 2007
7300852 Method for manufacturing capacitor of semiconductor element Nov. 27, 2007
7294875 Nanoscale programmable structures and methods of forming and using same Nov. 13, 2007
7276778 Semiconductor system functioning as thyristor in on-state, and as bipolar transistor in transient state or with overcurrent Oct. 2, 2007
7244646 Pixel design to improve photodiode capacitance and method of forming same Jul. 17, 2007
7157348 Method for fabricating capacitor device Jan. 2, 2007
7091099 Bipolar transistor and method for fabricating the same Aug. 15, 2006

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