Patents by Inventor Hong Chang

Hong Chang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10115814
    Abstract: This invention discloses a semiconductor power device disposed in a semiconductor substrate. The semiconductor power device comprises a plurality of trenches each having a trench endpoint with an endpoint sidewall perpendicular to a longitudinal direction of the trench and extends vertically downward from a top surface to a trench bottom surface. The semiconductor power device further includes a trench bottom dopant region disposed below the trench bottom surface and a sidewall dopant region disposed along the endpoint sidewall wherein the sidewall dopant region extends vertically downward along the endpoint sidewall of the trench to reach the trench bottom dopant region and pick-up the trench bottom dopant region to the top surface of the semiconductor substrate.
    Type: Grant
    Filed: January 19, 2018
    Date of Patent: October 30, 2018
    Assignee: Alpha and Omega Semiconductor Incorporated
    Inventors: Yongping Ding, Lei Zhang, Hong Chang, Jongoh Kim, John Chen
  • Patent number: 10078087
    Abstract: This invention relates to electrophysiological assays that measure sodium conductance activity of a delta human epithelial sodium channel (ENaC) in the presence and absence of delta hENaC enhancers. Also, the invention generally relates to assays for identifying compounds that enhance the activity of delta hENaC, especially in an oocyte expression system. These compounds have potential application in modulating (enhancing) salty taste perception.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: September 18, 2018
    Assignee: SENOMYX, INC.
    Inventors: Bryan Moyer, Min Lu, Fernando Echeverri, Hong Chang
  • Publication number: 20180250030
    Abstract: A minimally invasive surgical device includes a main body, a buffer assembly and a cutter bit. The main body includes an inner tube and an outer tube, wherein the inner tube is disposed in the outer tube. An end of the buffer assembly is connected to the inner tube. The cutter bit is connected to another end of the buffer assembly, wherein the cutter bit has a cutting portion. When the cutting portion is in contact with an object, the buffer assembly is adapted to enable the cutter bit to move relatively to the inner tube to decrease a cutting force between the cutting portion and the object, and is adapted to enable the cutting portion to be tilted with a surface of the object.
    Type: Application
    Filed: March 1, 2018
    Publication date: September 6, 2018
    Applicant: Industrial Technology Research Institute
    Inventors: Ching-Chuan Jiang, Hsin-Hisn Shen, Ming-Chia Yang, Yun-Han Lin, Wei-Hong Chang
  • Patent number: 10062755
    Abstract: Semiconductor devices are formed using a thin epitaxial layer (nanotube) formed on sidewalls of dielectric-filled trenches. In one embodiment, a termination structure is formed in the termination area and includes an array of termination cells formed in the termination area, the array of termination cells including a first termination cell at an interface to the active area to a last termination cell, each termination cell in the array of termination cells being formed in a mesa of the first semiconductor layer and having a first width; and an end termination cell being formed next to the last termination cell in the termination area, the end termination cell being formed in an end mesa of the first semiconductor layer and having a second width greater than the first width.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: August 28, 2018
    Assignee: Alpha and Omega Semiconductor Incorporated
    Inventors: Hamza Yilmaz, Xiaobin Wang, Anup Bhalla, John Chen, Hong Chang
  • Patent number: 10056461
    Abstract: Aspects of the present disclosure discloses a method for fabricating a trench MOSFET device comprising simultaneously forming a narrow trench and a wide trench into a semiconductor substrate using a mask to defines the narrow trench and the wide trench, forming an insulating layer over the semiconductor substrate with a first portion that fills up the narrow trench and a second portion that partially fills the wide trench, removing the second portion from the wide trench completely and leaving the narrow trench filled with the first portion, forming a gate electrode, forming a body region in a top portion of the semiconductor substrate, forming a source region in a portion of the body region, removing the first portion of nitride from the narrow trench, and forming a contact plug by filling a second conductive material in the narrow trench.
    Type: Grant
    Filed: September 30, 2016
    Date of Patent: August 21, 2018
    Assignee: ALPHA AND OMEGA SEMICONDUCTOR INCORPORATED
    Inventors: Sik Lui, Hong Chang
  • Patent number: 10048274
    Abstract: In one aspect, the present invention relates to a mammalian cell-based high-throughput assay for the profiling and screening of human epithelial sodium channel (hENaC) cloned from a human kidney c-DNA library and is also expressed in other tissues including human taste tissue. The present invention further relates to amphibian oocyte-based medium-throughput electrophysiological assays for identifying human ENaC modulators, preferably ENaC enhancers. Compounds that modulate ENaC function in a cell-based ENaC assay are expected to affect salty taste in humans.
    Type: Grant
    Filed: August 10, 2011
    Date of Patent: August 14, 2018
    Assignee: SENOMYX INC.
    Inventors: Guy Servant, Hong Chang, Cyril Redcrow, Sumita Ray, Imran Clark, Bryan Moyer
  • Patent number: 10035745
    Abstract: A method of purifying crude sevoflurane comprising (i) providing crude sevoflurane and an aqueous base to a first centrifugal separator, wherein the crude sevoflurane comprises sevoflurane and hexafluoroisopropanol; (ii) mixing the crude sevoflurane and the aqueous base in the first centrifugal separator; and (iii) separating the sevoflurane from the aqueous base in the first centrifugal separator, thereby purifying the crude sevoflurane.
    Type: Grant
    Filed: July 30, 2016
    Date of Patent: July 31, 2018
    Assignees: BAXTER INTERNATIONAL INC., BAXTER HEALTHCARE SA
    Inventors: Yongxian Zeng, Hong-Chang Lee, Linas Kudzma
  • Publication number: 20180212047
    Abstract: A group III-V device structure is provided. The group III-V device structure includes a channel layer formed over a substrate and an active layer formed over the channel layer. The group III-V device structure also includes a gate structure formed over the active layer and a source electrode and a drain electrode formed over the active layer. The source electrode and the drain electrode are formed on opposite sides of the gate structure. The group III-V device structure further includes a through via structure formed through the channel layer, the active layer and a portion of the substrate, and the through via structure is electrically connected to the source electrode or the drain electrode.
    Type: Application
    Filed: March 16, 2017
    Publication date: July 26, 2018
    Applicant: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Ming-Hong CHANG, Chih-Yuan CHAN, Shen-Ping WANG, Chung-Cheng CHEN, Chien-Li KUO, Po-Tao CHU
  • Publication number: 20180200403
    Abstract: The present disclosure provides a film composed of a polymer mixture, wherein the polymer mixture includes: a hydrophobic composition including polycaprolactone (PCL); and at least one hydrophilic polymer selected from a group consisting of alginate, gelatin, hyaluronic acid, polyvinyl alcohol (PVA), carboxymethyl cellulose (CMC), polyethylene glycol (PEG), collagen, demineralized bone matrix (DBM), bone morphogenetic protein (BMP), albumin, chitosan, fibrin, polyoxyethylene, polyvinylpyrrolidone, wherein the weight ratio of the hydrophobic composition to the hydrophilic polymer is about 1:0.01-100, and wherein the film has the effect of preventing leakage from a surgical wound or a diffuse wound.
    Type: Application
    Filed: December 21, 2017
    Publication date: July 19, 2018
    Applicant: Industrial Technology Research Institute
    Inventors: Wei-Hong CHANG, Ming-Chia YANG, Yun-Han LIN, Kun-Mao KUO, Yu-Chi WANG, Hsin-Hsin SHEN, Li-Jie LIN
  • Patent number: 10020380
    Abstract: This invention discloses a semiconductor power device disposed in a semiconductor substrate including an active cell areas and a termination area. The semiconductor power device further comprises a plurality of gate trenches formed at a top portion of the semiconductor substrate in the active cell area wherein each of the gate trenches is partially filled with a conductive gate material with a top portion of the trenches filled by a high density plasma (HDP) insulation layer. The semiconductor power device further comprises mesa areas of the semiconductor substrate disposed between the gate trenches wherein the mesa areas are recessed and having a top mesa surface disposed vertically below a top surface of the HDP insulation layer wherein the HDP insulation layer covering over the conductive gate material constituting a stick-out boundary-defining layer surrounding the recessed mesa areas in the active cell areas between the gate trenches.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: July 10, 2018
    Assignee: Alpha and Omega Semiconductor Incorporated
    Inventors: Wenjun Li, Paul Thorup, Hong Chang, Yeeheng Lee, Yang Xiang, Jowei Dun, Hongyong Xue, Yiming Gu
  • Publication number: 20180169295
    Abstract: The present disclosure provides a film composed of a polymer mixture, wherein the polymer mixture includes: a hydrophobic composition including polycaprolactone (PCL); and at least one hydrophilic polymer selected from a group consisting of: alginate, gelatin, chitosan, hyaluronic acid, collagen, demineralized bone matrix (DSM), carboxymethyl cellulose (CMC), fibrin, polyoxyethylene, polyethylene glycol (PEG) and polyvinylpyrrolidone, wherein the weight ratio of the hydrophobic composition to the at least one hydrophilic polymer is about 1:0.01-100, and wherein the film has the effect of preventing leakage from a surgical wound or a diffuse wound.
    Type: Application
    Filed: December 22, 2016
    Publication date: June 21, 2018
    Applicant: Industrial Technology Research Institute
    Inventors: Ming-Chia YANG, Wei-Hong CHANG, Yun-Han LIN, Kun-Mao KUO, Li-Jie LIN, Tai-Horng YOUNG
  • Publication number: 20180145167
    Abstract: This invention discloses a semiconductor power device disposed in a semiconductor substrate. The semiconductor power device comprises a plurality of trenches each having a trench endpoint with an endpoint sidewall perpendicular to a longitudinal direction of the trench and extends vertically downward from a top surface to a trench bottom surface. The semiconductor power device further includes a trench bottom dopant region disposed below the trench bottom surface and a sidewall dopant region disposed along the endpoint sidewall wherein the sidewall dopant region extends vertically downward along the endpoint sidewall of the trench to reach the trench bottom dopant region and pick-up the trench bottom dopant region to the top surface of the semiconductor substrate.
    Type: Application
    Filed: January 19, 2018
    Publication date: May 24, 2018
    Inventors: Yongping Ding, Lei Zhang, Hong Chang, Jongoh Kim, John Chen
  • Publication number: 20180130880
    Abstract: Semiconductor devices are formed using a thin epitaxial layer (nanotube) formed on sidewalls of dielectric-filled trenches. In one embodiment, a termination structure is formed in the termination area and includes an array of termination cells formed in the termination area, the array of termination cells including a first termination cell at an interface to the active area to a last termination cell, each termination cell in the array of termination cells being formed in a mesa of the first semiconductor layer and having a first width; and an end termination cell being formed next to the last termination cell in the termination area, the end termination cell being formed in an end mesa of the first semiconductor layer and having a second width greater than the first width.
    Type: Application
    Filed: January 10, 2018
    Publication date: May 10, 2018
    Inventors: Hamza Yilmaz, Xiaobin Wang, Anup Bhalla, John Chen, Hong Chang
  • Patent number: 9964822
    Abstract: An active array matrix substrate of a display panel includes a number of scan lines parallel to each other and arranged in a first metal layer of a first substrate, a number of data lines parallel to each other and arranged in a second metal layer of the first substrate, a number of gate electrodes arranged in the first metal layer, a number of source electrodes arranged in the second metal layer, and a number of drain electrodes arranged in the second metal layer. The source electrode includes at least one source extending portion spaced from and configured to overlap with the first metal layer. The drain electrode includes at least one drain extending portion spaced from and configured to overlap with the first metal layer.
    Type: Grant
    Filed: October 19, 2015
    Date of Patent: May 8, 2018
    Assignee: Century Technology (Shenzhen) Corporation Limited
    Inventors: Ming-Tsung Wang, Chih-Chung Liu, Yi-Hsiu Cheng, Zhi-Hong Chang
  • Publication number: 20180097078
    Abstract: Aspects of the present disclosure discloses a method for fabricating a trench MOSFET device comprising simultaneously forming a narrow trench and a wide trench into a semiconductor substrate using a mask to defines the narrow trench and the wide trench, forming an insulating layer over the semiconductor substrate with a first portion that fills up the narrow trench and a second portion that partially fills the wide trench, removing the second portion from the wide trench completely and leaving the narrow trench filled with the first portion, forming a gate electrode, forming a body region in a top portion of the semiconductor substrate, forming a source region in a portion of the body region, removing the first portion of nitride from the narrow trench, and forming a contact plug by filling a second conductive material in the narrow trench.
    Type: Application
    Filed: September 30, 2016
    Publication date: April 5, 2018
    Inventors: Sik Lui, Hong Chang
  • Patent number: 9899474
    Abstract: Semiconductor devices includes a thin epitaxial layer (nanotube) formed on sidewalls of mesas formed in a semiconductor layer. In one embodiment, a semiconductor device includes a first semiconductor layer, a second semiconductor layer formed thereon and of the opposite conductivity type, and a first epitaxial layer formed on mesas of the second semiconductor layer. An electric field along a length of the first epitaxial layer is uniformly distributed.
    Type: Grant
    Filed: June 8, 2017
    Date of Patent: February 20, 2018
    Assignee: Alpha and Omega Semiconductor, Inc.
    Inventors: Hamza Yilmaz, Xiaobin Wang, Anup Bhalla, John Chen, Hong Chang
  • Publication number: 20180042833
    Abstract: A cleaning cream containing PVA particles has PVA particles being uniformly dispersed in a cleaning cream. Moisture content of the cleaning cream is at the range of 0.1˜23%. The cleaning cream comprises a least a surfactant. The PVA particles has glycerol and PVA in which molecular weight of the PVA is 110,000˜120,000. The PVA particles remain as particle form in the cleaning cream.
    Type: Application
    Filed: August 4, 2017
    Publication date: February 15, 2018
    Inventors: Hong-Chang Yan, You-Hong Lu, Fang-Yun Lin
  • Patent number: 9892124
    Abstract: The disclosed invention relates generally to a method and device for transferring a file. In accordance with one embodiment, the method may include, receiving a file transfer request including information of a file and the file receiver; separating the file into multiple file segments; pushing the multiple file segments to the file receiver; if receiving a retransfer request sent by the file receiver, pushing the file segment assigned by the retransfer request to the file receiver; if receiving an acknowledgement sent by the file receiver, ending the file transferring, the acknowledgement indicating all of the multiple file segments being received by the file receiver. The method and device provided in the disclosed embodiments can transfer file more reliable.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: February 13, 2018
    Assignee: TENCENT TECHNOLOGY (SHENZHEN) COMPANY LIMITED
    Inventors: Hong-Chang Zhou, Jie Chen, Pu Cai, Xiao-Jie Dong, Sheng-Yu Yin
  • Patent number: 9887283
    Abstract: This invention discloses a semiconductor power device disposed in a semiconductor substrate. The semiconductor power device comprises a plurality of trenches each having a trench endpoint with an endpoint sidewall perpendicular to a longitudinal direction of the trench and extends vertically downward from a top surface to a trench bottom surface. The semiconductor power device further includes a trench bottom dopant region disposed below the trench bottom surface and a sidewall dopant region disposed along the endpoint sidewall wherein the sidewall dopant region extends vertically downward along the endpoint sidewall of the trench to reach the trench bottom dopant region and pick-up the trench bottom dopant region to the top surface of the semiconductor substrate.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: February 6, 2018
    Assignee: Alpha and Omega Semiconductor Incorporated
    Inventors: Yongping Ding, Lei Zhang, Hong Chang, Jongoh Kim, John Chen
  • Patent number: 9865694
    Abstract: A plurality of gate trenches is formed into a semiconductor substrate in an active cell region. One or more other trenches are formed in a different region. Each gate trench has a first conductive material in lower portions and a second conductive material in upper portions. In the gate trenches, a first insulating layer separates the first conductive material from the substrate, a second insulating layer separates the second conductive material from the substrate and a third insulating material separates the first and second conductive materials. The other trenches contain part of the first conductive material in a half-U shape in lower portions and part of the second conductive material in upper portions. In the other trenches, the third insulating layer separates the first and second conductive materials. The first insulating layer is thicker than the third insulating layer, and the third insulating layer is thicker than the second.
    Type: Grant
    Filed: January 23, 2017
    Date of Patent: January 9, 2018
    Assignee: ALPHA AND OMEGA SEMICONDUCTOR INCORPORATED
    Inventors: Yeeheng Lee, Lingpeng Guan, Hongyong Xue, Yiming Gu, Yang Xiang, Terence Huang, Sekar Ramamoorthy, Wenjun Li, Hong Chang, Madhur Bobde, Paul Thorup, Hamza Yilmaz