Patents by Inventor Chul-woo Oh

Chul-woo Oh 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: 11978857
    Abstract: The present disclosure provides a non-aqueous electrolyte including an additive for a non-aqueous electrolyte represented by Formula 1 below: wherein, R1 to R5 may each independently be any one selected from the group consisting of H, an alkenyl group having 2 to 20 carbon atoms, an alkynyl group having 2 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, a cycloalkenyl group having 3 to 12 carbon atoms, and a nitrile group.
    Type: Grant
    Filed: September 29, 2022
    Date of Patent: May 7, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventors: Hyung Tae Kim, Chul Haeng Lee, Jeong Woo Oh, Byung Chun Park, Young Mi Seo, Sung Guk Park
  • Patent number: 11973189
    Abstract: A non-aqueous electrolyte for a lithium secondary battery and a lithium secondary battery including the same are disclosed herein. In some embodiments, a non-aqueous electrolyte for a lithium secondary battery includes an organic solvent, a lithium salt, and a compound represented by Formula 1. In some embodiments, the compound represented by Formula 1 is present in an amount of 0.5 part by weight to 5 parts by weight based on 100 parts by weight of the non-aqueous electrolyte.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: April 30, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventors: Jeong Woo Oh, Chul Haeng Lee, Yoo Sun Kang
  • Publication number: 20240109858
    Abstract: The present invention relates to a compound capable of lowering the flammability of a non-aqueous electrolyte when included in the non-aqueous electrolyte and improving the life properties of a battery by forming an electrode-electrolyte interface which is stable at high temperatures and low in resistance, and relates to a compound represented by Formula I descried herein, a non-aqueous electrolyte solution and a lithium secondary battery both including the compound, n, m, Ak, and X are described herein.
    Type: Application
    Filed: March 23, 2022
    Publication date: April 4, 2024
    Applicants: LG Chem, Ltd., LG Energy Solution, Ltd.
    Inventors: Jung Keun Kim, Su Jeong Kim, Mi Sook Lee, Won Kyun Lee, Duk Hun Jang, Jeong Ae Yoon, Kyoung Hoon Kim, Chul Haeng Lee, Mi Yeon Oh, Kil Sun Lee, Jung Min Lee, Esder Kang, Chan Woo Noh, Chul Eun Yeom
  • Patent number: 11916197
    Abstract: An electrolyte solution additive for a secondary battery, a non-aqueous electrolyte solution including the same, and a lithium secondary battery including the same are disclosed herein. To be specific, the above non-aqueous electrolyte solution includes the electrolyte solution additive comprising the compound represented by Formula 1: wherein, in Formula 1, R1 and R2 are each independently an unsubstituted or substituted alkylene group having 1 to 5 carbon atoms, and L is a direct bond, —O—, —COO—, —RO—, or —R?COO—, wherein R and R? are each independently an alkylene group having 1 to 10 carbon atoms. The additive has an excellent effect of scavenging a decomposition product generated from a lithium salt.
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: February 27, 2024
    Assignee: LG Energy Solution, Ltd.
    Inventors: Jeong Woo Oh, Chul Haeng Lee, Sung Guk Park
  • Patent number: 9164529
    Abstract: A high-voltage power supply to output a plus/minus high-voltage, which is applied to image forming apparatuses, includes a plus high-voltage output unit outputting the plus high-voltage by using a Pulse Width Modulation (PWM) signal, a minus high-voltage operation control unit charging a certain voltage while the plus high-voltage output unit is outputting the plus high-voltage, a minus high-voltage output unit outputting the minus high-voltage by using the certain voltage charged in the minus high-voltage operation control unit, and a minus high-voltage blocking unit to block the output of the minus high-voltage from the minus high-voltage output unit while the plus high-voltage output unit is outputting the plus high-voltage.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: October 20, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chul-woo Oh, Jong-hwa Cho
  • Patent number: 9008531
    Abstract: A constant current-type high-voltage power supply apparatus which is used in an image forming apparatus includes a leakage current detection unit that detects a leakage current leaked from at least one output terminal of the constant current-type high-voltage power supply apparatus and outputs the detected leakage current, a direct current voltage output unit that outputs different direct current (DC) voltages according to whether the leakage current detected by the leakage current detection unit is input, and a power control unit that controls power supply to the constant current-type high-voltage power supply apparatus according to the output DC voltage.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: April 14, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chul-woo Oh, Jong-hwa Cho
  • Patent number: 8884466
    Abstract: A high voltage power supply (HVPS) including first and second high voltage output controllers controlling output of a high voltage output signal; and a plurality of transformers transforming an output signal provided from the first and second high voltage output controller, disposed outside of the first and second high voltage controllers on the substrate, wherein output terminals in the secondary sides of the plurality of transformers are disposed along the edge of the substrate. Therefore, the volume of a system can be minimized by arranging circuits in each component for high voltage output in parallel, and spark and discharge can be reduced by minimizing interference between the primary sides and the secondary sides of the components for high voltage output, thereby preventing damage to a product.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: November 11, 2014
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Chul-woo Oh
  • Publication number: 20140161478
    Abstract: A constant current-type high-voltage power supply apparatus which is used in an image forming apparatus includes a leakage current detection unit that detects a leakage current leaked from at least one output terminal of the constant current-type high-voltage power supply apparatus and outputs the detected leakage current, a direct current voltage output unit that outputs different direct current (DC) voltages according to whether the leakage current detected by the leakage current detection unit is input, and a power control unit that controls power supply to the constant current-type high-voltage power supply apparatus according to the output DC voltage.
    Type: Application
    Filed: December 10, 2012
    Publication date: June 12, 2014
    Applicant: Samsung Electronics Co., Ltd
    Inventors: Chul-woo OH, Jong-hwa CHO
  • Publication number: 20140105632
    Abstract: A high-voltage power supply to output a plus/minus high-voltage, which is applied to image forming apparatuses, includes a plus high-voltage output unit outputting the plus high-voltage by using a Pulse Width Modulation (PWM) signal, a minus high-voltage operation control unit charging a certain voltage while the plus high-voltage output unit is outputting the plus high-voltage, a minus high-voltage output unit outputting the minus high-voltage by using the certain voltage charged in the minus high-voltage operation control unit, and a minus high-voltage blocking unit to block the output of the minus high-voltage from the minus high-voltage output unit while the plus high-voltage output unit is outputting the plus high-voltage.
    Type: Application
    Filed: December 16, 2013
    Publication date: April 17, 2014
    Applicant: SAMSUNG Electronics Co., Ltd.
    Inventors: Chul-woo OH, Jong-hwa CHO
  • Patent number: 8634738
    Abstract: A high-voltage power supply to output a plus/minus high-voltage, which is applied to image forming apparatuses, includes a plus high-voltage output unit outputting the plus high-voltage by using a Pulse Width Modulation (PWM) signal, a minus high-voltage operation control unit charging a certain voltage while the plus high-voltage output unit is outputting the plus high-voltage, a minus high-voltage output unit outputting the minus high-voltage by using the certain voltage charged in the minus high-voltage operation control unit, and a minus high-voltage blocking unit to block the output of the minus high-voltage from the minus high-voltage output unit while the plus high-voltage output unit is outputting the plus high-voltage.
    Type: Grant
    Filed: January 28, 2010
    Date of Patent: January 21, 2014
    Assignee: SAMSUNG Electronics Co., Ltd.
    Inventors: Chul-woo Oh, Jong-hwa Cho
  • Patent number: 8487475
    Abstract: A power supply apparatus, an apparatus, and a method of supplying power are provided. The power supply apparatus including a high voltage generating unit, which generates one or more output voltages by using an input voltage, and which is implemented as a chip. The one or more output terminals are on a same circuit board as the high voltage generating unit, to output the generated one or more output voltages. The chip includes a transforming unit to transform the input voltage into one or more transformed voltages that are different from one another, and a rectifying unit to rectify the transformed voltages into rectified voltages, and to determine the rectified voltages as the generated one or more output voltages.
    Type: Grant
    Filed: July 9, 2012
    Date of Patent: July 16, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-hwa Cho, Joong-gi Kwon, Jong-yang Choo, Chul-woo Oh
  • Publication number: 20130016990
    Abstract: A power supply apparatus, an apparatus, and a method of supplying power are provided. The power supply apparatus including a high voltage generating unit, which generates one or more output voltages by using an input voltage, and which is implemented as a chip. The one or more output terminals are on a same circuit board as the high voltage generating unit, to output the generated one or more output voltages. The chip includes a transforming unit to transform the input voltage into one or more transformed voltages that are different from one another, and a rectifying unit to rectify the transformed voltages into rectified voltages, and to determine the rectified voltages as the generated one or more output voltages.
    Type: Application
    Filed: July 9, 2012
    Publication date: January 17, 2013
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jong-Hwa Cho, Joong-gi Kwon, Jong-yang Choo, Chul-woo Oh
  • Publication number: 20130009487
    Abstract: A high voltage power supply (HVPS) including first and second high voltage output controllers controlling output of a high voltage output signal; and a plurality of transformers transforming an output signal provided from the first and second high voltage output controller, disposed outside of the first and second high voltage controllers on the substrate, wherein output terminals in the secondary sides of the plurality of transformers are disposed along the edge of the substrate. Therefore, the volume of a system can be minimized by arranging circuits in each component for high voltage output in parallel, and spark and discharge can be reduced by minimizing interference between the primary sides and the secondary sides of the components for high voltage output, thereby preventing damage to a product.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 10, 2013
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Chul-woo OH
  • Patent number: 8350407
    Abstract: A high voltage power supply apparatus comprising a first circuit disposed on a prepared substrate, and for receiving a first voltage and generating a second voltage that is previously set according to the first voltage, and a second circuit for amplifying and rectifying the second voltage to generate a plurality of high voltage signals, wherein the first circuit and the second circuit are embodied as a single module, wherein at least a portion of the single module is surrounded by an insulator.
    Type: Grant
    Filed: January 15, 2010
    Date of Patent: January 8, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-hwa Cho, Joong-gi Kwon, Jong-yang Choo, Chul-woo Oh
  • Patent number: 8340539
    Abstract: A constant current-type high-voltage power supply apparatus which is used in an image forming apparatus includes a leakage current detection unit that detects a leakage current leaked from at least one output terminal of the constant current-type high-voltage power supply apparatus and outputs the detected leakage current, a direct current voltage output unit that outputs different direct current (DC) voltages according to whether the leakage current detected by the leakage current detection unit is input, and a power control unit that controls power supply to the constant current-type high-voltage power supply apparatus according to the output DC voltage.
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: December 25, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chul-woo Oh, Jong-hwa Cho
  • Publication number: 20120294044
    Abstract: Provided is a high-voltage power supply including a board having at least one bent portion separating a first region of the board from a second region of the board, the first region not being coplanar with the second region of the board; a first circuit, on the first region of the board, generating a second voltage according to a first voltage; and a second circuit, on the second region of the board, amplifying the second voltage and then rectifying the amplified second voltage.
    Type: Application
    Filed: August 8, 2012
    Publication date: November 22, 2012
    Applicant: Samsung Electronics Co. Ltd.
    Inventors: Chul-woo OH, Joong-gi Kwon
  • Patent number: 8283806
    Abstract: A high voltage power supply (HVPS) including first and second high voltage output controllers controlling output of a high voltage output signal; and a plurality of transformers transforming an output signal provided from the first and second high voltage output controller, disposed outside of the first and second high voltage controllers on the substrate, wherein output terminals in the secondary sides of the plurality of transformers are disposed along the edge of the substrate. Therefore, the volume of a system can be minimized by arranging circuits in each component for high voltage output in parallel, and spark and discharge can be reduced by minimizing interference between the primary sides and the secondary sides of the components for high voltage output, thereby preventing damage to a product.
    Type: Grant
    Filed: March 18, 2011
    Date of Patent: October 9, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Chul-woo Oh
  • Patent number: 8283807
    Abstract: A high voltage power supply (HVPS) including first and second high voltage output controllers controlling output of a high voltage output signal; and a plurality of transformers transforming an output signal provided from the first and second high voltage output controller, disposed outside of the first and second high voltage controllers on the substrate, wherein output terminals in the secondary sides of the plurality of transformers are disposed along the edge of the substrate. Therefore, the volume of a system can be minimized by arranging circuits in each component for high voltage output in parallel, and spark and discharge can be reduced by minimizing interference between the primary sides and the secondary sides of the components for high voltage output, thereby preventing damage to a product.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: October 9, 2012
    Inventor: Chul-woo Oh
  • Patent number: 8274176
    Abstract: In a provided power supply unit, a plurality of circuit elements are integrated into a chip, wherein the circuit elements generate one or more output voltages by using an input voltage. Thus, although the number of voltages, which can be generated by the power supply apparatus, is remarkably large, the power supply apparatus can be miniaturized. In addition, an apparatus, in which the power supply apparatus is installed, can be miniaturized.
    Type: Grant
    Filed: December 21, 2007
    Date of Patent: September 25, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-hwa Cho, Joong-gi Kwon, Jong-yang Choo, Chul-woo Oh
  • Patent number: 8260167
    Abstract: Provided is a high-voltage power supply including a board having at least one bent portion separating a first region of the board from a second region of the board, the first region not being coplanar with the second region of the board; a first circuit, on the first region of the board, generating a second voltage according to a first voltage; and a second circuit, on the second region of the board, amplifying the second voltage and then rectifying the amplified second voltage.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: September 4, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Chul-woo Oh, Joong-gi Kwon