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Class Information
Number: 257/E21.69
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 devices consisting of plurality of solid-state components formed in or on common substrate or of parts thereof; manufacture of integrated circuit devices or of parts thereof (epo) > Manufacture or treatment of devices consisting of plurality of solid-state components or integrated circuits formed in, or on, common substrate (epo) > With subsequent division of substrate into plural individual devices (epo) > To produce devices each consisting of plurality of components, e.g., integrated circuits (epo) > Substrate being semiconductor, using silicon technology (epo) > Field-effect technology (epo) > Mis technology (epo) > Dynamic random access memory structures (dram) (epo) > Read-only memory structures (rom), i.e., nonvolatile memory structures (epo) > Electrically programmable (eprom), i.e., floating gate memory structures (epo) > With conductive layer as control gate (epo) > With source and drain on same level and with cell select transistor (epo)
Description: This subclass is indented under subclass E21.681. This subclass is substantially the same in scope as ECLA classification H01L21/8247M4.










Sub-classes under this class:

Class Number Class Name Patents
257/E21.691 Simultaneous fabrication of periphery and memory cells (epo) 124


Patents under this class:
1 2 3 4 5 6

Patent Number Title Of Patent Date Issued
8679916 Non-volatile semiconductor memory device and process of manufacturing the same Mar. 25, 2014
8604536 Semiconductor device and method of manufacturing the same Dec. 10, 2013
8530309 Memory device and method for fabricating the same Sep. 10, 2013
8470670 Method for making semiconductor device Jun. 25, 2013
8446011 Devices and memory arrays including bit lines and bit line contacts May. 21, 2013
8319271 NAND-type nonvolatile semiconductor memory device Nov. 27, 2012
8198157 Methods of forming non-volatile memory devices including dummy word lines Jun. 12, 2012
8193059 Bit line structure and method for the production thereof Jun. 5, 2012
8163614 Method for forming NAND typed memory device Apr. 24, 2012
8159020 Non-volatile two transistor semiconductor memory cell and method for producing the same Apr. 17, 2012
8114736 Integrated circuit system with memory system Feb. 14, 2012
8115246 Semiconductor device including protrusion type isolation layer Feb. 14, 2012
8098527 Semiconductor memory device and manufacturing method thereof Jan. 17, 2012
7999303 NAND-type nonvolatile semiconductor memory device Aug. 16, 2011
7972923 Non-volatile memory device and method of manufacturing the same Jul. 5, 2011
7919823 EEPROM array with well contacts Apr. 5, 2011
7875922 Nonvolatile semiconductor memory and process of producing the same Jan. 25, 2011
7869279 EEPROM memory device and method of programming memory cell having N erase pocket and program and access transistors Jan. 11, 2011
7804123 Nonvolatile semiconductor memory Sep. 28, 2010
7791126 Non-volatile memory device Sep. 7, 2010
7781823 Nonvolatile semiconductor memory Aug. 24, 2010
7709884 Non-volatile two transistor semiconductor memory cell and method for producing the same May. 4, 2010
7696561 Non-volatile memory device, method of manufacturing the same and method of operating the same Apr. 13, 2010
7692252 EEPROM array with well contacts Apr. 6, 2010
7652323 Semiconductor device having step gates and method of manufacturing the same Jan. 26, 2010
7638878 Devices and systems including the bit lines and bit line contacts Dec. 29, 2009
7590004 Nonvolatile semiconductor memory having a plurality of interconnect layers Sep. 15, 2009
7585755 Method of fabricating non-volatile memory device Sep. 8, 2009
7579239 Method for the manufacture of a non-volatile memory device and memory device thus obtained Aug. 25, 2009
7553725 Nonvolatile memory devices and methods of fabricating the same Jun. 30, 2009
7547941 NAND non-volatile two-bit memory and fabrication method Jun. 16, 2009
7501321 NAND flash memory with densely packed memory gates and fabrication process Mar. 10, 2009
7485917 Split gate flash memory cell and fabrication method thereof Feb. 3, 2009
7473601 Method of fabricating flash memory device using sidewall process Jan. 6, 2009
7473602 Method of forming source contact of NAND flash memory Jan. 6, 2009
7456466 NAND flash memory device and method of manufacturing the same Nov. 25, 2008
7432159 Electrically erasable programmable read-only memory (EEPROM) device and methods of fabricating the same Oct. 7, 2008
7429513 Method of manufacturing a semiconductor device Sep. 30, 2008
7417281 Semiconductor device with a selection gate and a peripheral gate Aug. 26, 2008
7387934 Nonvolatile semiconductor memory and manufacturing method for the same Jun. 17, 2008
7358561 Source lines for NAND memory devices Apr. 15, 2008
7314803 Method for producing a semiconductor structure Jan. 1, 2008
7303954 Method for manufacturing NAND flash device Dec. 4, 2007
7276414 NAND memory arrays and methods Oct. 2, 2007
7274065 Source lines for NAND memory devices Sep. 25, 2007
7268041 Method of forming source contact of flash memory device Sep. 11, 2007
7238572 Method of manufacturing EEPROM cell Jul. 3, 2007
7202129 Source lines for NAND memory devices Apr. 10, 2007
7183157 Nonvolatile memory devices Feb. 27, 2007
7176088 Bitline structure and method for production thereof Feb. 13, 2007

1 2 3 4 5 6










 
 
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