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Class Information
Number: 257/E21.19
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 semiconductor device (epo) > Device having at least one potential-jump barrier or surface barrier, e.g., pn junction, depletion layer, carrier concentration layer (epo) > Device having semiconductor body comprising group iv elements or group iii-v compounds with or without impurities, e.g., doping materials (epo) > Manufacture of electrode on semiconductor body using process other than by epitaxial growth, diffusion of impurities, alloying of impurity materials, or radiation bombardment (epo) > Making electrode structure comprising conductor-insulator-semiconductor, e.g., mis gate (epo)
Description: This subclass is indented under subclass E21.158. This subclass is substantially the same in scope as ECLA classification H01L21/28E.










Sub-classes under this class:

Class Number Class Name Patents
257/E21.207 Insulator formed on nonelemental silicon semiconductor body, e.g., ge, sige, sigec (epo) 57
257/E21.191 Insulator formed on silicon semiconductor body (epo) 49


Patents under this class:
1 2 3 4 5

Patent Number Title Of Patent Date Issued
8703594 Semiconductor device having a treated gate structure and fabrication method thereof Apr. 22, 2014
8703595 N/P boundary effect reduction for metal gate transistors Apr. 22, 2014
8704294 Semiconductor device having metal gate and manufacturing method thereof Apr. 22, 2014
8703557 Methods of removing dummy fin structures when forming finFET devices Apr. 22, 2014
8691681 Semiconductor device having a metal gate and fabricating method thereof Apr. 8, 2014
8691655 Method of semiconductor integrated circuit fabrication Apr. 8, 2014
8685807 Method of forming metal gates and metal contacts in a common fill process Apr. 1, 2014
8680629 Control of flatband voltages and threshold voltages in high-k metal gate stacks and structures for CMOS devices Mar. 25, 2014
8673755 Semiconductor device having metal gate and manufacturing method thereof Mar. 18, 2014
8673759 Dry etch polysilicon removal for replacement gates Mar. 18, 2014
8674427 Nonvolatile memory device and method of manufacturing thereof Mar. 18, 2014
8669618 Manufacturing method for semiconductor device having metal gate Mar. 11, 2014
8669172 Method of manufacturing nonvolatile semiconductor device Mar. 11, 2014
8664029 Process for fabricating a capacitance type tri-axial accelerometer Mar. 4, 2014
8664053 Semiconductor device with isolation structures and gate insulating film that contain an element for threshold reduction and method of manufacturing the same Mar. 4, 2014
8664769 Semiconductor device Mar. 4, 2014
8653602 Transistor having replacement metal gate and process for fabricating the same Feb. 18, 2014
8652956 High-k metal gate electrode structures formed by separate removal of placeholder materials using a masking regime prior to gate patterning Feb. 18, 2014
8652890 Methods for fabricating integrated circuits with narrow, metal filled openings Feb. 18, 2014
8647952 Encapsulation of closely spaced gate electrode structures Feb. 11, 2014
8642468 NMOS metal gate materials, manufacturing methods, and equipment using CVD and ALD processes with metal based precursors Feb. 4, 2014
8637372 Methods for fabricating a FINFET integrated circuit on a bulk silicon substrate Jan. 28, 2014
8633118 Method of forming thin metal and semi-metal layers by thermal remote oxygen scavenging Jan. 21, 2014
8633098 Method of manufacturing a semiconductor device Jan. 21, 2014
8629046 Semiconductor device with a dislocation structure and method of forming the same Jan. 14, 2014
8617991 Method of manufacturing semiconductor device Dec. 31, 2013
8618616 FinFET structures and methods for fabricating the same Dec. 31, 2013
8604556 Gate pattern of semiconductor device and method for fabricating the same Dec. 10, 2013
8597992 Transistor and manufacturing method of the same Dec. 3, 2013
8598000 Two step poly etch LDMOS gate formation Dec. 3, 2013
8592882 Magnetic random access memory and manufacturing method thereof Nov. 26, 2013
8586475 Semiconductor device including gate electrode for applying tensile stress to silicon substrate, and method of manufacturing the same Nov. 19, 2013
8580625 Metal oxide semiconductor transistor and method of manufacturing the same Nov. 12, 2013
8575688 Trench device structure and fabrication Nov. 5, 2013
8575012 Semiconductor device production method and semiconductor device Nov. 5, 2013
8564066 Interface-free metal gate stack Oct. 22, 2013
8557694 Method for forming gate of semiconductor device Oct. 15, 2013
8551873 Method for manufacturing semiconductor device Oct. 8, 2013
8551834 Method of producing precision vertical and horizontal layers in a vertical semiconductor structure Oct. 8, 2013
8551843 Methods of forming CMOS semiconductor devices Oct. 8, 2013
8546247 Manufacturing method of semiconductor device with amorphous silicon layer formation Oct. 1, 2013
8546252 Metal gate FET having reduced threshold voltage roll-off Oct. 1, 2013
8546909 Nonvolatile semiconductor memory device having air gap proximate to element isolation region and method of manufacturing the same Oct. 1, 2013
8530312 Vertical devices and methods of forming Sep. 10, 2013
8530306 Method of forming a slit recess channel gate Sep. 10, 2013
8519474 Electronic device including an insulating layer having different thicknesses and a conductive electrode and a process of forming the same Aug. 27, 2013
8513078 Structure and method for fabricating fin devices Aug. 20, 2013
8513107 Replacement gate FinFET devices and methods for forming the same Aug. 20, 2013
8513667 Thin film transistor array panel and manufacturing method thereof Aug. 20, 2013
8507336 Method for forming metal gate and MOS transistor Aug. 13, 2013

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