Patents by Inventor Sang Hyun Cho

Sang Hyun Cho 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: 10221187
    Abstract: A method for producing anhydrosugar alcohol according to the present invention can increase the yield of anhydrosugar alcohol even in the absence of a catalyst or in the presence of a small amount of a transition metal salt catalyst by controlling the temperature of a high-temperature reaction, which converts sugar alcohol to anhydrosugar alcohol, in two steps, that is, a first low-temperature reaction step and a second high-temperature reaction step.
    Type: Grant
    Filed: September 15, 2015
    Date of Patent: March 5, 2019
    Assignee: SK Innovation Co., Ltd.
    Inventors: Young Bo Choi, Sung Real Son, In Hyoup Song, Sang Il Lee, Sang Hyun Cho, Dae Hyun Choo
  • Patent number: 10208197
    Abstract: The present invention relates to a polyvinyl chloride (PVC)-based compound composition, and more specifically, to a PVC-based compound composition that uses a PVC-based copolymer having internal plasticity prepared by suspension polymerization together with a PVC resin, thereby increasing compatibility with the PVC resin to shorten the gelling time, lowering the load at the time of extrusion to increase production in the same process conditions, and partially showing an impact modifier substitution effect.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: February 19, 2019
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Sung Hyub Baek, Ji Woo Kim, Hyeok Chil Kwon, Jee Hyoung Lee, Sang Hyun Cho, Kwang Heon Hyun
  • Patent number: 10103392
    Abstract: A membrane-electrode assembly (MEA) for fuel cells includes an electricity-generating array including an anode, a cathode, and an electrolyte membrane. A subgasket array includes an anode subgasket surrounding a periphery of the anode and a cathode subgasket surrounding a periphery of the cathode. A junction array includes a polar junction and a nonpolar junction surrounding a periphery of the electrolyte membrane and attaching the anode subgasket and the cathode subgasket to each other.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: October 16, 2018
    Assignee: HYUNDAI MOTOR COMPANY
    Inventors: Bo Ki Hong, Kook Il Han, Ji Yeon Park, Byeong Heon Jeong, Sang Hyun Cho, Chae Won Lim
  • Patent number: 10053571
    Abstract: The present invention provides a polymer emulsion having heat sealability for a blister package, and a method for preparing the same. Since the polymer emulsion of the present invention includes latex particles having an average particle diameter of a nanosize and a low unimodal particle size distribution, it may exhibit uniform and stable emulsion properties, particularly excellent heat sealability, and thus may be suitably used for a blister package and on the like. Furthermore, the polymer emulsion of the present invention is polymerized in an aqueous medium without using an organic solvent, and thus enables provision of a blister package with minimized harmfulness to a human body and the environment.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: August 21, 2018
    Assignee: HANWHA CHEMICAL CORPORATION
    Inventors: Su Jin Lee, Dae Won Cho, Jeong Hyun Choi, Sang Hyun Cho
  • Patent number: 10001416
    Abstract: A temperature sensor having calibration function according to temperature, a method of operating the same, and a device including the same are provided. The temperature sensor includes a reference circuit configured to generate at least one temperature information signal that varies according to a temperature, and generate at least one reference signal that is substantially constant relative to the temperature; and a digital temperature generator configured to receive the at least one temperature information signal and the at least one reference signal generated by the reference circuit, and generate a digital temperature information signal indicative of the temperature based on the at least one temperature information signal and the at least one reference signal, wherein one of the reference circuit and the digital temperature generator is configured to receive a calibration signal and adjust the at least one reference signal based on the calibration signal.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: June 19, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Hyun Cho, Myoung Oh Ki, Joo Sung Lee, Hyoung Jong Ko, Sang Ho Kim, Ho Jin Park, Seoung Jae Yoo
  • Patent number: 9991546
    Abstract: A fuel cell stack assembly device is provided. The assembly device includes a stack guide apparatus that arranges and stacks fuel cells using a plurality of guide bars and a press unit that repeatedly moves vertically based on the stack guide apparatus and presses the fuel cells stacked on the stack guide apparatus. A roller structure includes a roller in rolling contact with the guide bar and is installed at the press unit. A weight detection portion detects weight that is applied to the roller by the guide bar. Additionally, a controller determines whether the guide bar is at the home position based on a detection signal of the weight detection portion and operates the press unit.
    Type: Grant
    Filed: May 2, 2016
    Date of Patent: June 5, 2018
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Nam Gu Lee, Kyung Sik Son, Sang Hyun Cho
  • Publication number: 20180128690
    Abstract: A temperature sensor, a processor including the same, and a method of operating the same are provided.
    Type: Application
    Filed: January 8, 2018
    Publication date: May 10, 2018
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Hyun CHO, Hyung Jong KO, Kyung Soo PARK, Seoung Jae YOO, Sang Ho KIM, Ho Jin PARK
  • Publication number: 20180109747
    Abstract: An analog-to-digital converter configured to convert an analog signal into a digital signal includes a first converter configured to receive an input signal of an analog type, compare the input signal with a plurality of reference signals, select one of the plurality of reference signals based on the comparison, and output an upper bit that is a portion of the digital signal based on the selected reference signal, a second converter configured to perform an oversampling operation n times based on a residue signal indicating a difference between an upper analog signal corresponding to the upper bit value and the input signal and output an intermediate bit value of the digital signal corresponding to the first to n-th oversampling signals generated respectively during the oversampling operations performed n times, and a third converter configured to output a lower bit value of the digital signal corresponding to the n-th oversampling signal.
    Type: Application
    Filed: September 28, 2017
    Publication date: April 19, 2018
    Inventors: Youngcheol Chae, Sang-hyun Cho, Min-ho Kwon, Seung-hyun Lim, Woo-jin Jo
  • Patent number: 9880060
    Abstract: A temperature sensor, a processor including the same, and a method of operating the same are provided. The temperature sensor includes: a reference circuit configured to receive a supply voltage provided from outside the processor and utilized by a logic block of the processor for operation of the logic block, and generate, using the supply voltage, at least one temperature information signal that varies according to a temperature of the logic block and at least one reference signal that is substantially constant relative to the temperature of the logic block; and a digital temperature generator configured to receive the at least one temperature information signal and the at least one reference signal generated by the reference circuit, and generate a digital temperature information signal indicative of the temperature of the logic block based on the at least one temperature information signal and the at least one reference signal.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: January 30, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sang Hyun Cho, Hyung Jong Ko, Kyung Soo Park, Seoung Jae Yoo, Sang Ho Kim, Ho Jin Park
  • Publication number: 20180006321
    Abstract: An apparatus for supplying a component of a fuel cell stack includes a cartridge in which a plurality of components is stacked, a gripper for vacuum-adsorbing an uppermost component among the plurality of components stacked in the cartridge, and a lift generating unit for generating a lift force to lift only the uppermost component among the plurality of components, wherein the lift generating unit includes a plurality of air jet holes disposed symmetrically in a lower portion of the gripper and causes air to be blown toward an upper surface of the uppermost component.
    Type: Application
    Filed: August 30, 2016
    Publication date: January 4, 2018
    Inventors: Sang Hyun CHO, Nam Gu LEE
  • Publication number: 20170339360
    Abstract: An image sensor chip includes an internal voltage generator for generating internal voltages using an external voltage received at a first terminal of the image sensor chip, a temperature sensor for generating a temperature voltage, a selection circuit for outputting one of the external voltage, the internal voltages, and the temperature voltage, a digital code generation circuit for generating a digital code using an output voltage of the selection circuit, and a second terminal for outputting the digital code from the image sensor chip.
    Type: Application
    Filed: May 10, 2017
    Publication date: November 23, 2017
    Inventors: SANG HYUN CHO, JI YONG PARK, DAE HWA PAIK, KYOUNG MIN KOH, MIN HO KWON, SEUNG HYUN LIM
  • Publication number: 20170253608
    Abstract: A method for producing anhydrosugar alcohol according to the present invention can increase the yield of anhydrosugar alcohol even in the absence of a catalyst or in the presence of a small amount of a transition metal salt catalyst by controlling the temperature of a high-temperature reaction, which converts sugar alcohol to anhydrosugar alcohol, in two steps, that is, a first low-temperature reaction step and a second high-temperature reaction step.
    Type: Application
    Filed: September 15, 2015
    Publication date: September 7, 2017
    Inventors: Young Bo Choi, Sung Real Son, In Hyoup Song, Sang Il Lee, Sang Hyun Cho, Dae Hyun Choo
  • Publication number: 20170204261
    Abstract: The present invention provides a polymer emulsion having heat sealability for a blister package, and a method for preparing the same. Since the polymer emulsion of the present invention includes latex particles having an average particle diameter of a nanosize and a low unimodal particle size distribution, it may exhibit uniform and stable emulsion properties, particularly excellent heat sealability, and thus may be suitably used for a blister package and on the like. Furthermore, the polymer emulsion of the present invention is polymerized in an aqueous medium without using an organic solvent, and thus enables provision of a blister package with minimized harmfulness to a human body and the environment.
    Type: Application
    Filed: July 8, 2015
    Publication date: July 20, 2017
    Inventors: Su Jin LEE, Dae Won CHO, Jeong Hyun CHOI, Sang Hyun CHO
  • Publication number: 20170162887
    Abstract: An apparatus of supplying a fuel cell stack material is provided. The apparatus includes a moving part in which a plurality of gas diffusion layers (GDLs) diffusing a gas fuel and supporting a catalyst layer are stacked and a cartridge having the moving part movably disposed therein. An adsorption pad is disposed above the cartridge to adsorb the plurality of gas diffusion layers and a nozzle part is configured to spray air above the plurality of gas diffusion layers to generate a lift on the plurality of gas diffusion layers.
    Type: Application
    Filed: July 11, 2016
    Publication date: June 8, 2017
    Inventors: Sang Hyun Cho, Nam Gu Lee
  • Patent number: 9669547
    Abstract: A producing method of a fuel cell stack includes a transfer robot configured to clamp and to transfer a membrane electrode assembly (MEA) and a gas diffusion layer (GDL) component. A feeding testing unit is configured to check a stacked status of the MEA and the GDL component while the MEA and the GDL component are transferred and stacked by the transfer robot. A control unit is configured to receive a signal of the feeding test unit and to transmit an error signal when it is determined that the MEA and the GDL component are erroneously stacked.
    Type: Grant
    Filed: December 3, 2014
    Date of Patent: June 6, 2017
    Assignees: Hyundai Motor Company, Kia Motors Corporation
    Inventors: Sang Hyun Cho, Joook Park, Nam Gu Lee
  • Publication number: 20170092977
    Abstract: A fuel cell stack assembly device is provided. The assembly device includes a stack guide apparatus that arranges and stacks fuel cells using a plurality of guide bars and a press unit that repeatedly moves vertically based on the stack guide apparatus and presses the fuel cells stacked on the stack guide apparatus. A roller structure includes a roller in rolling contact with the guide bar and is installed at the press unit. A weight detection portion detects weight that is applied to the roller by the guide bar. Additionally, a controller determines whether the guide bar is at the home position based on a detection signal of the weight detection portion and operates the press unit.
    Type: Application
    Filed: May 2, 2016
    Publication date: March 30, 2017
    Inventors: Nam Gu Lee, Kyung Sik Son, Sang Hyun Cho
  • Patent number: 9598519
    Abstract: The present invention relates to a resin for a blister package and a preparation method thereof. The resin for a blister package according to the present invention is a water-soluble resin which can minimize a hazard to a human body due to residual of a solvent, and particularly, a resin layer formed by using the resin can show an excellent heat seal property and is hardly deformed at the heat seal temperature condition.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: March 21, 2017
    Assignee: Hanwha Chemical Corporation
    Inventors: Jeong Hyun Choi, Sin-Won Kang, Jung Ho Kong, Sang Hyun Cho
  • Publication number: 20160272804
    Abstract: The present invention relates to a polyvinyl chloride (PVC)-based compound composition, and more specifically, to a PVC-based compound composition that uses a PVC-based copolymer having internal plasticity prepared by suspension polymerization together with a PVC resin, thereby increasing compatibility with the PVC resin to shorten the gelling time, lowering the load at the time of extrusion to increase production in the same process conditions, and partially showing an impact modifier substitution effect.
    Type: Application
    Filed: November 25, 2014
    Publication date: September 22, 2016
    Inventors: Sung Hyub BAEK, Ji Woo KIM, Hyeok Chil KWON, Jae Hyoung LEE, Sang Hyun CHO, Kwang Heon HYUN
  • Publication number: 20160087298
    Abstract: A producing method of a fuel cell stack includes a transfer robot configured to clamp and to transfer a membrane electrode assembly (MEA) and a gas diffusion layer (GDL) component. A feeding testing unit is configured to check a stacked status of the MEA and the GDL component while the MEA and the GDL component are transferred and stacked by the transfer robot. A control unit is configured to receive a signal of the feeding test unit and to transmit an error signal when it is determined that the MEA and the GDL component are erroneously stacked.
    Type: Application
    Filed: December 3, 2014
    Publication date: March 24, 2016
    Inventors: Sang Hyun CHO, Joook Park, Nam Gu Lee
  • Patent number: 9281704
    Abstract: A method of controlling a load current is provided. By the method, a battery voltage control operation is begun when a battery voltage becomes lower than a first threshold value, whether a gradient of the battery voltage is a positive gradient or a negative gradient is determined at an interval of a reference or, alternatively, predetermined control time, the load current is controlled based on the gradient of the battery voltage at an interval of the reference or, alternatively, predetermined control time, and the battery voltage control operation is finished when the battery voltage becomes higher than a second threshold value.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: March 8, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dong-Hun Heo, Sang-Hyun Cho, Hyung-Jong Ko