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Class Information
Number: 257/E21.646
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)
Description: This subclass is indented under subclass E21.645. This subclass is substantially the same in scope as ECLA classification H01L21/8242.










Sub-classes under this class:

Class Number Class Name Patents
257/E21.647 Characterized by type of capacitor (epo) 357
257/E21.662 Read-only memory structures (rom), i.e., nonvolatile memory structures (epo) 170
257/E21.661 Static random access memory structures (sram) (epo) 876


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12

Patent Number Title Of Patent Date Issued
8703552 Method and structure for forming capacitors and memory devices on semiconductor-on-insulator (SOI) substrates Apr. 22, 2014
8703566 Transistors comprising a SiC-containing channel Apr. 22, 2014
8686486 Memory device Apr. 1, 2014
8680596 Semiconductor device and method for manufacturing the same Mar. 25, 2014
8673729 finFET eDRAM strap connection structure Mar. 18, 2014
8658538 Method of fabricating memory device Feb. 25, 2014
8647988 Memory device and method of fabricating the same Feb. 11, 2014
8648403 Dynamic memory cell structures Feb. 11, 2014
8637363 Methods of manufacturing a semiconductor device having a node array Jan. 28, 2014
8637376 Method of manufacturing semiconductor device Jan. 28, 2014
8624313 Method of manufacturing semiconductor memory device Jan. 7, 2014
8624350 Semiconductor device and method of fabricating the same Jan. 7, 2014
8617949 Capacitor and method for making same Dec. 31, 2013
8618615 Semiconductor device and fabrication method thereof Dec. 31, 2013
8604532 Computing apparatus employing dynamic memory cell structures Dec. 10, 2013
8598643 Nonvolatile semiconductor memory device and method of manufacturing the same Dec. 3, 2013
8575669 Fabricating technique of a highly integrated semiconductor device in which a capacitor is formed between adjacent gate patterns by using a nanotube process Nov. 5, 2013
8574926 Magnetic memory and manufacturing method thereof Nov. 5, 2013
8574985 Methods for depositing high-K dielectrics Nov. 5, 2013
8569798 Semicondcutor device comprising transistor Oct. 29, 2013
8564038 Nonvolatile semiconductor memory device including resistive element Oct. 22, 2013
8558348 Variable resistance memory device and methods of forming the same Oct. 15, 2013
8541284 Method of manufacturing string floating gates with air gaps in between Sep. 24, 2013
8541828 Methods for depositing high-K dielectrics Sep. 24, 2013
8537610 Techniques for providing a semiconductor memory device Sep. 17, 2013
8536635 Semiconductor structure and fabrication method thereof Sep. 17, 2013
8530312 Vertical devices and methods of forming Sep. 10, 2013
8518774 Manufacturing process for zero-capacitor random access memory circuits Aug. 27, 2013
8497544 Repairing defects in a nonvolatile semiconductor memory module utilizing a heating element Jul. 30, 2013
8476693 Nonvolatile semiconductor memory and method for manufacturing the same Jul. 2, 2013
8471321 Semiconductor device comprising capacitor and method of fabricating the same Jun. 25, 2013
8466504 DRAM with dopant stop layer and method of fabricating the same Jun. 18, 2013
8455875 Embedded DRAM for extremely thin semiconductor-on-insulator Jun. 4, 2013
8450783 Semiconductor device May. 28, 2013
8445387 Epitaxial silicon growth May. 21, 2013
8445350 Semiconductor device and method of manufacturing the same May. 21, 2013
8445343 Methods of fabricating semiconductor devices including semiconductor layers formed in stacked insulating layers May. 21, 2013
8426925 Memory device and method of fabricating the same Apr. 23, 2013
8415721 Field side sub-bitline nor flash array and method of fabricating the same Apr. 9, 2013
8415728 Memory device and method of fabricating the same Apr. 9, 2013
8409946 Methods of forming field effect transistors, pluralities of field effect transistors, and DRAM circuitry comprising a plurality of individual memory cells Apr. 2, 2013
8399936 Through substrate via semiconductor components Mar. 19, 2013
8378497 Contact structures and semiconductor devices including the same Feb. 19, 2013
8372748 Method for forming semiconductor device Feb. 12, 2013
8368134 Nonvolatile memory device and method for fabricating the same Feb. 5, 2013
8367497 Method to reduce trench capacitor leakage for random access memory device Feb. 5, 2013
8357600 Method for fabricating buried gate using pre landing plugs Jan. 22, 2013
8354702 Inexpensive electrode materials to facilitate rutile phase titanium oxide Jan. 15, 2013
8343830 Semiconductor device and method for manufacturing the same Jan. 1, 2013
8334556 DRAM semiconductor device with pad electrode Dec. 18, 2012

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