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Class Information
Number: 438/257
Name: Semiconductor device manufacturing: process > Making field effect device having pair of active regions separated by gate structure by formation or alteration of semiconductive active regions > Having insulated gate (e.g., igfet, misfet, mosfet, etc.) > Having additional gate electrode surrounded by dielectric (i.e., floating gate)
Description: Process for making an insulated gate field effect transistor wherein an additional gate electrode completely separated by dielectric from a first insulated gate electrode is formed.

Sub-classes under this class:

Class Number Class Name Patents
438/266 Having additional, nonmemory control electrode or channel portion (e.g., for accessing field effect transistor structure, etc.) 742
438/258 Including additional field effect transistor (e.g., sense or access transistor, etc.) 1,146
438/262 Including elongated source or drain region disposed under thick oxide regions (e.g., buried or diffused bitline, etc.) 351
438/259 Including forming gate electrode in trench or recess in substrate 1,074
438/261 Multiple interelectrode dielectrics or nonsilicon compound gate insulator 847
438/265 Oxidizing sidewall of gate electrode 314
438/260 Textured surface of gate insulator or gate electrode 234
438/264 Tunneling insulator 1,028

Patents under this class:

Patent Number Title Of Patent Date Issued
8710602 Method and system for providing magnetic junctions having improved characteristics Apr. 29, 2014
8710574 Dual gate electronic memory cell and device with dual gate electronic memory cells Apr. 29, 2014
8709892 Nanoparticles in a flash memory using chaperonin proteins Apr. 29, 2014
8709888 Hybrid CMOS nanowire mesh device and PDSOI device Apr. 29, 2014
8706837 System and method for managing switch and information handling system SAS protocol communication Apr. 22, 2014
8704319 Method and system for providing magnetic layers having insertion layers for use in spin transfer torque memories Apr. 22, 2014
8692316 Isolation structures for FinFET semiconductor devices Apr. 8, 2014
8691648 Methods for fabricating semiconductor memory with process induced strain Apr. 8, 2014
8691647 Memory devices containing a high-K dielectric layer Apr. 8, 2014
8691633 Metal structure for memory device Apr. 8, 2014
8686487 Semiconductor devices and electronic systems comprising floating gate transistors Apr. 1, 2014
8685815 Hafnium tantalum titanium oxide films Apr. 1, 2014
8680609 Depletion mode semiconductor device with trench gate and manufacturing method thereof Mar. 25, 2014
8679915 Non-volatile semiconductor device and method of fabricating embedded non-volatile semiconductor memory device with sidewall gate Mar. 25, 2014
8679914 Method of forming a chalcogenide material and methods of forming a resistive random access memory device including a chalcogenide material Mar. 25, 2014
8674424 Memory device with charge storage layers at the sidewalls of the gate and method for fabricating the same Mar. 18, 2014
8674414 Three-dimensional nonvolatile memory devices including interposed floating gates Mar. 18, 2014
8674356 Electrically measurable on-chip IC serial identifier and methods for producing the same Mar. 18, 2014
8673719 DRAM with a nanowire access transistor Mar. 18, 2014
8673715 Memory device and method of fabricating thereof Mar. 18, 2014
8669607 Methods and apparatus for non-volatile memory cells with increased programming efficiency Mar. 11, 2014
8669157 Non-volatile memory cell having a heating element and a substrate-based control gate Mar. 11, 2014
8664712 Flash memory cell on SeOI having a second control gate buried under the insulating layer Mar. 4, 2014
8659069 Gate structures Feb. 25, 2014
8659068 Dynamic memory structure Feb. 25, 2014
8658496 Etch stop layer for memory cell reliability improvement Feb. 25, 2014
8658495 Method of fabricating erasable programmable single-poly nonvolatile memory Feb. 25, 2014
8653581 HTO offset for long Leffective, better device performance Feb. 18, 2014
8653579 Semiconductor storage device Feb. 18, 2014
8652902 Floating gate semiconductor memory device and method for producing such a device Feb. 18, 2014
8652895 Semiconductor memory device and a method of manufacturing the same Feb. 18, 2014
8647946 Control gate Feb. 11, 2014
8643079 Nanocrystal formation using atomic layer deposition and resulting apparatus Feb. 4, 2014
8642458 Method of fabricating nonvolatile memory device Feb. 4, 2014
8637919 Nonvolatile memory device Jan. 28, 2014
8637389 Resist feature and removable spacer pitch doubling patterning method for pillar structures Jan. 28, 2014
8637366 Nonvolatile memory cell without a dielectric antifuse having high- and low-impedance states Jan. 28, 2014
8633072 Method of manufacturing semiconductor device Jan. 21, 2014
8629491 Semiconductor memory device and method of manufacturing the same Jan. 14, 2014
8629427 Topological insulator-based field-effect transistor Jan. 14, 2014
8624314 Semiconductor device and method for manufacturing semiconductor device Jan. 7, 2014
8623726 Method for filling a physical isolation trench and integrating a vertical channel array with a periphery circuit Jan. 7, 2014
8623671 ALD processing techniques for forming non-volatile resistive switching memories Jan. 7, 2014
8617991 Method of manufacturing semiconductor device Dec. 31, 2013
8617961 Post-gate isolation area formation for fin field effect transistor device Dec. 31, 2013
8617951 Method of manufacturing a semiconductor memory device having a floating gate Dec. 31, 2013
8614474 Thin film transistor memory and display unit including the same Dec. 24, 2013
8614126 Method of making a three-dimensional memory array with etch stop Dec. 24, 2013
8614125 Nonvolatile memory devices and methods of forming the same Dec. 24, 2013
8614124 SONOS ONO stack scaling Dec. 24, 2013

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