Patents by Inventor On Chang

On 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: 11625473
    Abstract: A method and apparatus with selective combined authentication performs a single authentication based on a first modality among plural modalities, and in response to the single authentication having failed, determines whether to perform a combined authentication by a combination of two or more of the plural modalities, and selectively, depending on a result of the determining of whether to perform the combined authentication, performs the combined authentication.
    Type: Grant
    Filed: February 7, 2019
    Date of Patent: April 11, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jihye Kim, Seungju Han, Jaejoon Han, Minsu Ko, SungUn Park, Chang Kyu Choi
  • Patent number: 11626220
    Abstract: A surface-mountable over-current protection device comprises at least one PTC material layer, a first conductive layer, a second conductive layer, a first electrode, a second electrode, an insulating layer, and a cover layer. The PTC material layer comprises crystalline polymer and conductive fillers dispersed therein. The first conductive layer and the second conductive layer are disposed on a first surface and a second surface of the PTC material layer, respectively. The first electrode and the second electrode are electrically connected to the first conductive layer and the second conductive layer, respectively. The insulating layer is disposed between the first electrode and the second electrode for insulation. The cover layer includes a fluorine-containing polymer, and wraps around an entire outer surface of the surface-mountable over-current protection device.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: April 11, 2023
    Assignee: POLYTRONICS TECHNOLOGY CORP.
    Inventors: Feng Ji Li, Yi-Hsuan Lee, Yung Hsien Chang
  • Patent number: 11626873
    Abstract: An off chip driver circuit includes a pull-up circuit and a pull-down circuit. The pull-up circuit includes several first transistors and a first resistance circuit coupled between the first transistors and a input/output pad. The first transistors generate a first voltage to the first resistance circuit. The first resistance circuit transmits, in response to a first control signal, the first voltage to the input/output pad and to have a variable resistance according to the first control signal. The pull-down circuit includes several second transistors and a second resistance circuit coupled between the second transistors and the input/output pad. The second transistors generate a second voltage to the second resistance circuit. The second resistance circuit transmits, in response to a second control signal, the second voltage to the input/output pad and to have a variable resistance according to the second control signal.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: April 11, 2023
    Assignee: NANYA TECHNOLOGY CORPORATION
    Inventor: Chang-Ting Wu
  • Patent number: 11626518
    Abstract: A semiconductor device includes a substrate; a fin protruding above the substrate, the fin including a compound semiconductor material that includes a semiconductor material and a first dopant, the first dopant having a different lattice constant than the semiconductor material, where a concentration of the first dopant in the fin changes along a first direction from an upper surface of the fin toward the substrate; a gate structure over the fin; a channel region in the fin and directly under the gate structure; and source/drain regions on opposing sides of the gate structure, the source/drain regions including a second dopant, where a concentration of the second dopant at a first location within the channel region is higher than that at a second location within the channel region, where the concentration of the first dopant at the first location is lower than that at the second location.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: April 11, 2023
    Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.
    Inventors: Shahaji B. More, Shih-Chieh Chang, Cheng-Han Lee
  • Patent number: 11622652
    Abstract: A cooking device includes a heating unit and an oil discharge roast pan mounted to the heating unit. The oil discharge roast pan includes a pan body, a plurality of oil discharge holes extending through top and bottom surfaces of the pan body, and a plurality of protrusions protruding downwardly from the bottom surface.
    Type: Grant
    Filed: October 8, 2019
    Date of Patent: April 11, 2023
    Assignee: Tsann Kuen (Zhangzhou) Enterprise Co., Ltd.
    Inventor: Wenyu Chang
  • Patent number: 11627521
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). A network providing device includes at least one transceiver, and at least one processor operatively coupled with the at least one transceiver. The at least one processor is configured to acquire a measurement result of a signal transmitted by a first cellular network, and transmit, to a router, a control message for setting a router to access a network identified on the basis of the measurement result. The network comprises at least one of the first cellular network and a second cellular network.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: April 11, 2023
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yeonchul Shin, Hyeongmin Nam, Suhyun Kim, Inkook Chang, Joonsung Chun, Chulhoon Hwang
  • Patent number: 11623563
    Abstract: A sound generating apparatus for a vehicle includes: a motor controller that generates a motor torque corresponding to a target sound; and an output device that outputs the target sound based on vibration generated by the motor torque to generate a sound of the vehicle without requiring an external amplifier or a separate actuator, thus preventing increases in cost and weight.
    Type: Grant
    Filed: July 31, 2020
    Date of Patent: April 11, 2023
    Assignees: HYUNDAI MOTOR COMPANY, KIA MOTORS CORPORATION
    Inventors: Kyoung Jin Chang, Young Hoon Cho, Do Hong Lee
  • Patent number: 11626554
    Abstract: A light emitting device including a first light emitting part, a second light emitting part, and a third light emitting part each including an n-type semiconductor layer, a p-type semiconductor layer, and an active layer therebetween, a first contact member electrically contacting a first surface of the n-type semiconductor layer of the second light emitting part; and a second contact member electrically contacting the n-type semiconductor layer of the third light emitting part, in which the first contact member extends to the first light emitting part to electrically contact the n-type semiconductor layer of the first light emitting part, the first contact member and the second contact member overlap one another, and the second contact member has a width that gradually decreases in a downward direction.
    Type: Grant
    Filed: August 25, 2022
    Date of Patent: April 11, 2023
    Assignee: Seoul Viosys Co., Ltd.
    Inventors: Jong Min Jang, Chang Yeon Kim
  • Patent number: 11626259
    Abstract: A membrane circuit structure having a plurality of switch regions includes first, second and third membranes and a spacer layer. The second membrane is beneath the first membrane, and a lower surface of the second membrane is provided with a conductive pattern in at least one of the switch regions. The spacer layer is disposed between the first and second membranes. The third membrane is beneath the second membrane, and an upper surface of the third membrane is provided with first and second trigger portions separated from each other in the at least one of the switch regions, and the conductive pattern is able to be in contact with the first and second trigger portions, so that the first and second trigger portions are able to be electrically connected to each other through the conductive pattern.
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: April 11, 2023
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventors: Lei-Lung Tsai, Sheng-Fan Chang, Chin-Sung Pan
  • Patent number: 11624166
    Abstract: Provided is a toothed drum type oil recovery device, which includes: a recovery drum having a center coupled to a rotary shaft and having a plurality of tooth units formed around an outer circumference thereof, wherein one side of the recovery drum is disposed in the water to which oil is spilled so that the oil is recovered by the tooth unit at one side of the recovery drum according to the rotation; and a separation unit containing an oil separating liquid and disposed at the other side of the recovery drum, wherein when the tooth unit moves onto the oil separating liquid at the other side of the recovery drum according to the rotation of the recovery drum, the oil separating liquid is introduced into a space between the tooth units adjacent to each other by means of a capillary action to separate the oil from the tooth unit.
    Type: Grant
    Filed: July 1, 2021
    Date of Patent: April 11, 2023
    Assignee: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Seong-Jin Kim, Myoung-Woon Moon, Seo-Hyun Cho, Young-A Lee, Chang-Hwi Sim
  • Patent number: 11625104
    Abstract: In some examples, an electronic device includes a click pad. In some examples, the electronic device includes circuitry disposed under the click pad. In some examples, the circuitry is to activate to reduce click pad travel from a first distance to a second distance. In some examples, the circuitry is to activate in response to a stylus detection.
    Type: Grant
    Filed: February 22, 2022
    Date of Patent: April 11, 2023
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Yi Yun Chang, Hung Sung Pan, Chen Jie Wu
  • Patent number: 11626134
    Abstract: A heat-assisted magnetic recording (HAMR) device is configured to write regions of neutral polarity on a magnetic media during a same pass of the recording head in which other regions are written of positive polarity and negative polarity. The various disclosed write techniques may facilitate creation of “zero state” (substantially net zero polarity) transition zones between each pair of data bits of opposite polarity and/or may facilitate the encoding of three different logical states (e.g., 1, 0, and ?1) on the media.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: April 11, 2023
    Assignee: SEAGATE TECHNOLOGY LLC
    Inventors: Thomas Young Chang, Philip L. Steiner, Zengyuan Liu
  • Patent number: 11622692
    Abstract: A signal processing apparatus includes a memory configured to store instructions; and a processor configured to execute the instructions to obtain a signal; obtain a frequency band spectrum by applying a Fast Fourier Transform (FFT) to the obtained signal; and remove noise from the obtained spectrum by applying a first filter and a second filter, which are different from each other, to the obtained frequency band spectrum.
    Type: Grant
    Filed: June 18, 2020
    Date of Patent: April 11, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chang Mok Choi, Dae Geun Jang
  • Patent number: 11624964
    Abstract: An optical switch structure includes a substrate, a first electrical contact, a first material having a first conductivity type electrically connected to the first electrical contact, a second material having a second conductivity type coupled to the first material, and a second electrical contact electrically connected to the second material. The optical switch structure also includes a waveguide structure disposed between the first electrical contact and the second electrical contact and comprising a waveguide core coupled to the substrate and including a first material characterized by a first index of refraction and a first electro-optic coefficient and a waveguide cladding at least partially surrounding the waveguide core and including a second material characterized by a second index of refraction and a second electro-optic.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: April 11, 2023
    Assignee: Psiquantum, Corp.
    Inventors: Chia-Ming Chang, Hung-Hsi Lin, Gary Gibson
  • Patent number: 11625302
    Abstract: A method of programming a nonvolatile memory device includes: receiving a programming command, data for a plurality of pages, and an address corresponding to a selected word-line; programming the data for one of the pages to an unselected word-line; reading data of a previously programmed page from the selected word-line; and programming the data for the remaining pages and the data of the previously programmed page to the selected word-line.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: April 11, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyung-Min Kang, Dongku Kang, Su Chang Jeon, Won-Taeck Jung
  • Patent number: 11624285
    Abstract: An airfoil of either of a turbine blade or a turbine vane includes a cooling passage; at least one disk body disposed on an inner wall of the cooling passage and configured to reduce a flow cross-sectional area of the cooling passage to increase a fluid pressure of cooling fluid flowing through the cooling passage; and at least one through-hole formed in each of the at least one disk body such that the cooling fluid flows through the at least one through-hole and forms a vortex on a downstream side of the at least one through-hole. The cooling passage includes an inlet supplied with the cooling fluid and an end opposite to the inlet, and the at least one disk body is disposed at the inlet of the cooling passage and is configured to increase the fluid pressure of the cooling fluid flowing into the cooling passage.
    Type: Grant
    Filed: February 17, 2022
    Date of Patent: April 11, 2023
    Assignee: DOOSAN ENERBILITY CO., LTD.
    Inventor: Chang Yong Lee
  • Patent number: 11624431
    Abstract: A linear actuator (1) and the centrifugal safety device (50) thereof is disclosed. The safety device (50) includes an outer socket (51) having a stop portion (512) and a first accommodation portion (513), an inner socket (53) having a raised portion (531) and a second accommodation portion (532) and a centrifugal assembly (55) having a centrifugal block (551) and an elastic element (555). The inner socket (53) drives the centrifugal assembly (55) to rotate. If the centrifugal force of the centrifugal block (551) is smaller than the elasticity of the elastic element (555), then the centrifugal block (551) is limited in the second accommodation portion (532) by the elastic element (555), or else the centrifugal block (551) moves into the first accommodation portion (513) and clamped by the raised portion (531) and the stop portion (512).
    Type: Grant
    Filed: April 13, 2022
    Date of Patent: April 11, 2023
    Assignee: TIMOTION TECHNOLOGY CO., LTD.
    Inventor: Yu-Chang Lin
  • Patent number: 11624067
    Abstract: This invention generally relates to a composition and its method of use for inducing adult stem cell (ASC) expansion and/or derivation in vitro, using miR-302-like pre-miRNAs, shRNAs and/or siRNAs, all of which contain a shared sequence of 5?-UAAGUGCUUC CAUGUUU-3? (SEQ ID NO: 7) in the 5?-end, and further in conjunction with the use of some wound-healing-related defined factors, including but not limited to basic fibroblast growth factor (bFGF)/fibroblast growth factor 2 (FGF-2), leukemia inhibitory factor (LIF), insulin-like growth factor (IGF), Epidermal growth factor (EGF), platelet-derived growth factor (PDGF), vascular endothelial growth factor (VEGF), transforming growth factor (TGF), tumor necrosis factor (TNF), stem cell factor (SCF), homeobox proteins (HOX), Notch, GSK, Wnt/beta-Catenin signals, interleukins, and/or bone morphogenetic proteins (BMPs).
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: April 11, 2023
    Inventors: Shi-Lung Lin, Samantha Chang-Lin, Donald Chang
  • Patent number: D982999
    Type: Grant
    Filed: April 20, 2021
    Date of Patent: April 11, 2023
    Inventor: Shao Peng Chang
  • Patent number: D983165
    Type: Grant
    Filed: June 6, 2020
    Date of Patent: April 11, 2023
    Assignee: GOOGLE LLC
    Inventors: Maj Isabelle Olsson, Willy Carteau, Diana Chang, Katherine Morgenroth, Carl Cepress