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Class Information
Number: 257/E49.001
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Solid-state devices with at least one potential-jump barrier or surface barrier using active layer of lower electrical conductivity than material adjacent thereto and through which carrier tunneling occurs, processes or apparatus peculiar to manufacture or treatment of such devices, or of parts thereof (epo)
Description: This main group provides for solid state devices with at least one potential-jump barrier or surface barrier using active layer of lower electrical conductivity than the material adjacent thereto, e.g., metal sandwiched between thin or thick film insulator or organic semiconductor material, and through which carrier tunneling occurs, and processes or apparatus adapted for the manufacture or treatment of such devices, or of parts thereof. This subclass is substantially the same in scope as ECLA classification H01L49/00.

Sub-classes under this class:

Class Number Class Name Patents
257/E49.002 Devices using mott metal-insulator transition, e.g., field-effect transistors (epo) 19
257/E49.003 Quantum devices, e.g., quantum interference devices, metal single electron transistor (epo) 48
257/E49.004 Thin-film or thick-film devices (epo) 45

Patents under this class:

Patent Number Title Of Patent Date Issued
8211757 Organic thin film transistor substrate and fabrication method therefor Jul. 3, 2012
8148718 Low voltage transistors Apr. 3, 2012
7943997 Fully-depleted low-body doping field effect transistor (FET) with reverse short channel effects (SCE) induced by self-aligned edge back-gate(s) May. 17, 2011
7932505 Perovskite transition metal oxide nonvolatile memory element Apr. 26, 2011
7929308 Power device package having enhanced heat dissipation Apr. 19, 2011
7888673 Monitoring semiconductor device and method of manufacturing the same Feb. 15, 2011
7803669 Organic thin-film transistor substrate and fabrication method therefor Sep. 28, 2010
7750352 Light strips for lighting and backlighting applications Jul. 6, 2010
7742323 Continuous plane of thin-film materials for a two-terminal cross-point memory Jun. 22, 2010
7728327 2-terminal semiconductor device using abrupt metal-insulator transition semiconductor material Jun. 1, 2010
7692241 Semiconductor device Apr. 6, 2010
7655942 Fiber incorporating quantum dots as programmable dopants Feb. 2, 2010
7560750 Solar cell device Jul. 14, 2009
7538042 Method of manufacturing a structure having a projection May. 26, 2009
7420203 Organic semiconductor element Sep. 2, 2008
7402833 Multilayer dielectric tunnel barrier used in magnetic tunnel junction devices, and its method of fabrication Jul. 22, 2008
7282731 Quantum supermemory Oct. 16, 2007
7115898 Organic semiconductor device, RF modulation circuit, and IC card Oct. 3, 2006
6924023 Method of manufacturing a structure having pores Aug. 2, 2005
6861674 Electroluminescent device Mar. 1, 2005
6809379 Field effect transistor and method for producing a field effect transistor Oct. 26, 2004
6781166 Nanoscopic wire-based devices and arrays Aug. 24, 2004
6737668 Method of manufacturing structure with pores and structure with pores May. 18, 2004
6610463 Method of manufacturing structure having pores Aug. 26, 2003
6486501 Component with rectifying function, fulfilled by means of charge transport by ions Nov. 26, 2002
6429137 Solid state thermal switch Aug. 6, 2002
6034408 Solid state thermal switch Mar. 7, 2000
5694059 Buffer of fine connection structure for connecting an atom level circuit and a general semiconductor circuit Dec. 2, 1997
5561300 Atomic switching devices and logical circuits Oct. 1, 1996
5552675 High temperature reaction apparatus Sep. 3, 1996
5365073 Nanofabricated structures Nov. 15, 1994
5330612 Method of fabricating nano-size thin wires and devices made of such thin wires Jul. 19, 1994
5324976 Phonon controlled conductivity device Jun. 28, 1994
5308241 Surface shaping and finshing apparatus and method May. 3, 1994
5231259 Radiation manufacturing apparatus Jul. 27, 1993
5170032 Radiation manufacturing apparatus and amendment Dec. 8, 1992
5131941 Reaction apparatus and method Jul. 21, 1992
4390586 Electrical device of semi-conducting material with non-conducting areas Jun. 28, 1983
4293194 Solid electrochromic element Oct. 6, 1981
4288775 Device and method of manufacturing a relative humidity sensor and temperature sensor Sep. 8, 1981
4282537 Silicon MOS inductor Aug. 4, 1981
RE29578 Electron tunneling device Mar. 14, 1978

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