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Class Information
Number: 257/E45.002
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Solid-state devices adapted for rectifying, amplifying, oscillating, or switching without potential-jump barrier or surface barrier, e.g., dielectric triodes; ovshinsky-effect devices, processes, or apparatus peculiar to manufacture or treatment thereof, or of parts thereof (epo) > Bistable switching devices, e.g., ovshinsky-effect devices (epo)
Description: This subclass is indented under subclass E45.001. This subclass is substantially the same in scope as ECLA classification H01L45/00B.


Sub-classes under this class:

Class Number Class Name Patents
257/E45.004 N: light-controlled ovshinsky devices (epo) 11
257/E45.003 Switching materials being oxides or nitrides (epo) 58


Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
7619237 Programmable resistive memory cell with self-forming gap Nov. 17, 2009
7612360 Non-volatile memory devices having cell diodes Nov. 3, 2009
7598512 Thin film fuse phase change cell with thermal isolation layer and manufacturing method Oct. 6, 2009
7598113 Phase change memory device and fabricating method therefor Oct. 6, 2009
7589342 Phase change memory device having carbon nano tube lower electrode material and method of manufacturing the same Sep. 15, 2009
7589344 Semiconductor device and method of producing the same Sep. 15, 2009
7589343 Memory and access device and method therefor Sep. 15, 2009
7582889 Electrically rewritable non-volatile memory element and method of manufacturing the same Sep. 1, 2009
7579611 Nonvolatile memory cell comprising a chalcogenide and a transition metal oxide Aug. 25, 2009
7579613 Thin film fuse phase change RAM and manufacturing method Aug. 25, 2009
7579615 Access transistor for memory device Aug. 25, 2009
7572662 Method of fabricating phase change RAM including a fullerene layer Aug. 11, 2009
7569845 Phase-change memory and fabrication method thereof Aug. 4, 2009
7569430 Phase changeable structure and method of forming the same Aug. 4, 2009
7569846 Phase-change memory device including nanowires and method of manufacturing the same Aug. 4, 2009
7566895 Phase change memory device and method for fabricating the same Jul. 28, 2009
7560724 Storage device with reversible resistance change elements Jul. 14, 2009
7554144 Memory device and manufacturing method Jun. 30, 2009
7553692 Phase-change memory device and method of manufacturing the same Jun. 30, 2009
7550756 Semiconductor memory Jun. 23, 2009
7547905 Programmable conductor memory cell structure and method therefor Jun. 16, 2009
7547906 Multi-functional chalcogenide electronic devices having gain Jun. 16, 2009
7544966 Three-terminal electrical bistable devices Jun. 9, 2009
7541609 Phase change memory cell having a sidewall contact Jun. 2, 2009
7534625 Phase change memory with damascene memory element May. 19, 2009
7534713 High density chalcogenide memory cells May. 19, 2009
7531823 Electron device, integrated electron device using same, and operating method using same May. 12, 2009
7528402 Electrically rewritable non-volatile memory element May. 5, 2009
7521372 Method of fabrication of phase-change memory Apr. 21, 2009
7521281 Methods of forming phase-changeable memory devices Apr. 21, 2009
7511294 Resistive memory element with shortened erase time Mar. 31, 2009
7507985 Phase change memory and phase change recording medium Mar. 24, 2009
7498601 Phase-change memory device and method of manufacturing same Mar. 3, 2009
7491962 Resistance variable memory device with nanoparticle electrode and method of fabrication Feb. 17, 2009
7482616 Semiconductor devices having phase change memory cells, electronic systems employing the same and methods of fabricating the same Jan. 27, 2009
7479649 Vacuum jacketed electrode for phase change memory element Jan. 20, 2009
7473597 Method of forming via structures and method of fabricating phase change memory devices incorporating such via structures Jan. 6, 2009
7473921 Nonvolatile memory cell with concentric phase change material formed around a pillar arrangement Jan. 6, 2009
7470923 Semiconductor integrated circuit device Dec. 30, 2008
7462858 Fabrication of phase change memory element with phase-change electrodes using conformal deposition Dec. 9, 2008
7459716 Resistance change memory device Dec. 2, 2008
7459715 Resistance change memory device Dec. 2, 2008
7456480 Semiconductor device Nov. 25, 2008
7456421 Vertical side wall active pin structures in a phase change memory and manufacturing methods Nov. 25, 2008
7453082 Small electrode for a chalcogenide switching device and method for fabricating same Nov. 18, 2008
7439536 Phase change memory cell with tubular heater and manufacturing method thereof Oct. 21, 2008
7425720 Semiconductor device Sep. 16, 2008
7422917 Forming tapered lower electrode phase-change memories Sep. 9, 2008
7420198 Non-volatile memory cells employing a transition metal oxide layer as a data storage material layer and methods of manufacturing the same Sep. 2, 2008
7420200 Damascene phase change memory Sep. 2, 2008

1 2 3 4 5 6 7


 
 
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