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Class Information
Number: 257/390
Name: Active solid-state devices (e.g., transistors, solid-state diodes) > Field effect device > Having insulated electrode (e.g., mosfet, mos diode) > Insulated gate field effect transistor in integrated circuit > Matrix or array of field effect transistors (e.g., array of fets only some of which are completed, or structure for mask programmed read-only memory (rom))
Description: Subject matter wherein the integrated circuit contains a two dimensional array of IGFETs, only some of which are completed devices, or the integrated circuit contains structure for a mask programmed read-only memory device.


Sub-classes under this class:

Class Number Class Name Patents
257/391 Selected groups of complete field effect devices having different threshold voltages (e.g., different channel dopant concentrations) 347


Patents under this class:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

Patent Number Title Of Patent Date Issued
7397093 Semiconductor devices with sidewall conductive patterns methods of fabricating the same Jul. 8, 2008
7391064 Memory device with a selection element and a control line in a substantially similar layer Jun. 24, 2008
7375391 Semiconductor device with split gate electrode structure and method for manufacturing the semiconductor device May. 20, 2008
7368781 Contactless flash memory array May. 6, 2008
7364951 Nonvolatile semiconductor memory device and method for manufacturing the same Apr. 29, 2008
7365389 Memory cell having enhanced high-K dielectric Apr. 29, 2008
7358120 Silicon-on-insulator (SOI) read only memory (ROM) array and method of making a SOI ROM Apr. 15, 2008
7358562 NROM flash memory devices on ultrathin silicon Apr. 15, 2008
7355220 Array substrate Apr. 8, 2008
7355231 Memory circuitry with oxygen diffusion barrier layer received over a well base Apr. 8, 2008
7348640 Memory device Mar. 25, 2008
7338866 Strapping word lines of NAND memory devices Mar. 4, 2008
7339231 Semiconductor device and an integrated circuit card Mar. 4, 2008
7339239 Vertical NROM NAND flash memory array Mar. 4, 2008
7335956 Capacitor device with vertically arranged capacitor regions of various kinds Feb. 26, 2008
7332378 Integrated circuit memory system with dummy active region Feb. 19, 2008
7327002 Industrial control circuit using a single-chip microprocessor Feb. 5, 2008
7323726 Method and apparatus for coupling to a common line in an array Jan. 29, 2008
7323741 Semiconductor nonvolatile memory device Jan. 29, 2008
7321153 Semiconductor memory device and corresponding programming method Jan. 22, 2008
7319603 Semiconductor memory device layout comprising high impurity well tap areas for supplying well voltages to N wells and P wells Jan. 15, 2008
7315073 Semiconductor device having an oxide film formed on a semiconductor substrate sidewall of an element region and on a sidewall of a gate electrode Jan. 1, 2008
7312473 Display device and electronic device using the same Dec. 25, 2007
7312503 Semiconductor memory device including MOS transistors each having a floating gate and a control gate Dec. 25, 2007
7309892 Semiconductor element and semiconductor memory device using the same Dec. 18, 2007
7307296 Flash memory and fabrication method thereof Dec. 11, 2007
7307332 Semiconductor device and method for fabricating the same Dec. 11, 2007
7304355 Three-dimensional-memory-based self-test integrated circuits and methods Dec. 4, 2007
7279742 Transistor structure with a curved channel, memory cell and memory cell array for DRAMs, and methods for fabricating a DRAM Oct. 9, 2007
7279418 Plastically deformable irreversible storage medium and method of producing one such medium Oct. 9, 2007
7276413 NROM flash memory devices on ultrathin silicon Oct. 2, 2007
7276769 Semiconductor integrated circuit device Oct. 2, 2007
7274056 Semiconductor constructions Sep. 25, 2007
7271433 High-density single transistor vertical memory gain cell Sep. 18, 2007
7268389 Nonvolatile semiconductor memory Sep. 11, 2007
7259415 Long retention time single transistor vertical memory gain cell Aug. 21, 2007
7250646 TFT mask ROM and method for making same Jul. 31, 2007
7247916 Nonvolatile semiconductor memory and manufacturing method for the same Jul. 24, 2007
7244985 Non-volatile memory array Jul. 17, 2007
7244653 Method and structure in the manufacture of mask read only memory Jul. 17, 2007
7244638 Semiconductor memory device and method of production Jul. 17, 2007
7244995 Scrambling method to reduce wordline coupling noise Jul. 17, 2007
7235848 Nonvolatile memory with spacer trapping structure Jun. 26, 2007
7233024 Three-dimensional memory device incorporating segmented bit line memory array Jun. 19, 2007
7230305 Semiconductor memory device including a flash memory cell array and a mask read-only memory cell array Jun. 12, 2007
7227255 Semiconductor device and method of producing the same Jun. 5, 2007
7227233 Silicon-on-insulator (SOI) Read Only Memory (ROM) array and method of making a SOI ROM Jun. 5, 2007
7227232 Contactless mask programmable ROM Jun. 5, 2007
7227220 Semiconductor devices having buried bit lines and methods of manufacturing semiconductor devices having buried bit lines Jun. 5, 2007
7208379 Pitch multiplication process Apr. 24, 2007

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