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Class Information
Number: 257/E27.002
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Device consisting of a plurality of semiconductor or other solid state components formed in or on a common substrate, e.g., integrated circuit device (epo) > Including bulk negative resistance effect component (epo)
Description: This subclass is indented under subclass E27.001. This subclass is substantially the same in scope as ECLA classification H01L27/26.










Sub-classes under this class:

Class Number Class Name Patents
257/E27.003 Including gunn-effect device (epo) 3


Patents under this class:

Patent Number Title Of Patent Date Issued
8680500 Phase change memory devices having buried metal silicide patterns Mar. 25, 2014
8659002 Phase change memory elements using energy conversion layers, memory arrays and systems including same, and methods of making and using same Feb. 25, 2014
8581225 Variable resistance nonvolatile memory device and method of manufacturing the same Nov. 12, 2013
8551830 Semiconductor integrated circuit switch matrix Oct. 8, 2013
8455853 Memory devices and formation methods Jun. 4, 2013
8445319 Nonvolatile memory element, manufacturing method thereof, and nonvolatile semiconductor apparatus using the nonvolatile memory element May. 21, 2013
8415651 Phase change memory cell having top and bottom sidewall contacts Apr. 9, 2013
8354661 Variable resistance memory device having reduced bottom contact area and method of forming the same Jan. 15, 2013
8338816 Nonvolatile memory element, and nonvolatile semiconductor device using the nonvolatile memory element Dec. 25, 2012
8164081 Memory devices and formation methods Apr. 24, 2012
8158965 Heating center PCRAM structure and methods for making Apr. 17, 2012
8153471 Method for forming a reduced active area in a phase change memory structure Apr. 10, 2012
8049201 Semiconductor memory device and method of manufacturing the same Nov. 1, 2011
8022502 Nonvolatile memory element, manufacturing method thereof, and nonvolatile semiconductor apparatus using the nonvolatile memory element Sep. 20, 2011
7995380 Negative differential resistance pull up element for DRAM Aug. 9, 2011
7800092 Phase change memory elements using energy conversion layers, memory arrays and systems including same, and methods of making and using Sep. 21, 2010
7615810 Electro-optical device, method of manufacturing electro-optical device, and electronic apparatus Nov. 10, 2009
7482621 Rewritable nano-surface organic electrical bistable devices Jan. 27, 2009
7323349 Self-aligned cross point resistor memory array Jan. 29, 2008
7221005 Negative resistance field-effect device May. 22, 2007
4402127 Method of manufacturing a logic circuit including at least one field-effect transistor structure of the normally-off type and at least one saturable resistor Sep. 6, 1983
4394589 Logic circuit including at least one resistor or one transistor having a saturable resistor field effect transistor structure Jul. 19, 1983
4380020 Active high frequency semiconductor device with integral waveguide Apr. 12, 1983
3959807 Planar transferred electron device with integral nonlinear load resistor May. 25, 1976











 
 
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