Patents by Inventor Cheol Hwan Kim

Cheol Hwan Kim 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: 10861685
    Abstract: The fluoro-based polymer composite target for sputtering according to the present invention is excellent in adhesion with a metal electrode to which a voltage is applied, can prevent bending, and is capable of stably forming plasma by imparting conductivity even with industrially widely used DC and MF power supply systems, thereby allowing a fluorinated polymer to be effectively deposited on an adherend by sputtering.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: December 8, 2020
    Assignee: KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY
    Inventors: Sang Jin Lee, Jae Heung Lee, Woo Jin Choi, Cheol Hwan Kim, Sung Hyun Kim, Seong Geun Cho, Dong Seok Ham, Kwang Je Kim, Dong Soon Park, Jae Seong Park
  • Patent number: 10851789
    Abstract: A scroll compressor is provided, that may include a connection groove to reduce discharge resistance. The scroll compressor may include a fixed scroll including a fixed end plate and a feed wrap and an orbiting scroll, rotating with respect to the fixed scroll and including an orbiting end plate and an orbiting wrap, and structure in which a connection groove having a concave groove shape provided at an inner surface of the fixed end plate to allow a refrigerant to flow through the connection groove depending on an overlapping state of the fixed wrap and the connection groove, thereby providing an effect of increasing opening efficiency of discharge holes at a beginning of discharge.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: December 1, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Yong Kyu Choi, Cheol Hwan Kim, Howon Lee
  • Patent number: 10830237
    Abstract: A compressor is provided having an integrated flow path structure in which an oil flow path and an intermediate pressure flow path are integrated into one in a compression unit, thereby simplifying a flow path of the compression unit. The compressor may include at least one integrated flow path in which the oil flow path and the refrigerant gas flow are integrated into one in a fixed scroll. The at least one integrated flow path may connect an intermediate pressure chamber and a compression chamber in a compressors unit. The at least one integrated flow path may provide a compressed refrigerant in the compression chamber to the intermediate pressure chamber and provide oil in the intermediate pressure chamber to the compression chamber, simplifying the flow path of the compression unit.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: November 10, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Yong Kyu Choi, Nara Han, Cheol Hwan Kim, Byeongchul Lee
  • Publication number: 20200340477
    Abstract: A compressor is provided which is configured to allow lubrication of a thrust surface through an oil groove formed in a thrust surface of a fixed scroll. Also, a scroll compressor is provided which smoothly supplies oil to a thrust surface of a fixed scroll by including a fixed scroll having an oil groove formed in the thrust surface of a fixed scroll sidewall, and allows an injection pressure acting on an orbiting scroll in an upward direction to be added by supplying the oil guided to the oil groove to the thrust surface of the fixed scroll such that an overturn moment generated in the orbiting scroll may be offset.
    Type: Application
    Filed: June 29, 2020
    Publication date: October 29, 2020
    Inventors: Sang Baek PARK, Jungsun CHOI, Cheol Hwan KIM, Byeongchul LEE
  • Patent number: 10816000
    Abstract: A scroll compressor is provided which is capable of supplying oil stored in an oil storage chamber upward through a rotary shaft to lubricate a bearing portion.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: October 27, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Cheol Hwan Kim, Kangwook Lee, Byeongchul Lee, Yong Kyu Choi
  • Patent number: 10808698
    Abstract: A scroll compressor, and more particularly, to a scroll compressor including a communication groove which may decrease discharge resistance is provided. The scroll compressor may include a fixed scroll having a fixed end plate and a fixed wrap, and an orbiting scroll configured to perform an orbiting movement about the fixed scroll and having an orbiting end plate and an orbiting wrap. A communication groove in the form of a recessed groove may be formed in an inner surface of the orbiting end plate, and a refrigerant may flow through the communication groove according to a state in which the fixed wrap overlaps the communication groove such that there is an effect in that an opening efficiency of a discharge hole is improved at an initial stage of discharge.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: October 20, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Yong Kyu Choi, Cheol Hwan Kim, Kangwook Lee, Jungsun Choi
  • Patent number: 10781817
    Abstract: A scroll compressor is provided capable of supplying oil stored in an oil storage chamber upward through a rotary shaft to supply the oil to a compression device and to lubricate a bearing portion. The scroll compressor may include a casing, a drive motor, a rotary shaft, a main frame, a fixed scroll, and an orbiting scroll. A medium pressure chamber may be formed in or at a middle of the main frame, the fixed scroll, and the orbiting scroll. A pocket groove configured to guide oil discharged through the oil hole to the medium pressure chamber may be formed in an upper surface of the orbiting scroll, and a differential pressure path configured to guide the oil guided to the medium pressure chamber to the compression chamber may be provided in the fixed scroll.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: September 22, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Kangwook Lee, Taekyoung Kim, Cheol Hwan Kim, Byeongchul Lee
  • Patent number: 10739662
    Abstract: The present application relates to an electrochromic device. In one aspect, the electrochromic device includes an electrochromic element including a first electrode, a second electrode, an electrochromic layer, an ion storage layer and the second electrode. The electrochromic device also includes controller configured to change a state of the electrochromic element to change to at least one of a first state having a first transmittance, a second state having a second transmittance, a third state having a third transmittance, or a fourth state having a fourth transmittance by applying power to the electrochromic element. When a first voltage is applied to the electrochromic element in a first state, the electrochromic element becomes the second state, and when the first voltage is applied to the electrochromic element in a fourth state, the electrochromic element becomes the third state.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: August 11, 2020
    Assignee: LeapHigh Inc.
    Inventors: Sang Hyun Park, Byoung Dong Kim, Yun Chul Choi, Sang Woo Yoo, Cheol Hwan Kim, Jin Ah Sohn
  • Patent number: 10697455
    Abstract: A compressor is provided which is configured to allow lubrication of a thrust surface through an oil groove formed in a thrust surface of a fixed scroll. Also, a scroll compressor is provided which smoothly supplies oil to a thrust surface of a fixed scroll by including a fixed scroll having an oil groove formed in the thrust surface of a fixed scroll sidewall, and allows an injection pressure acting on an orbiting scroll in an upward direction to be added by supplying the oil guided to the oil groove to the thrust surface of the fixed scroll such that an overturn moment generated in the orbiting scroll may be offset.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: June 30, 2020
    Assignee: LG ELECTRONICS INC.
    Inventors: Sang baek Park, Jungsun Choi, Cheol Hwan Kim, Byeongchul Lee
  • Publication number: 20200088199
    Abstract: A scroll compressor is provided capable of supplying oil stored in an oil storage chamber upward through a rotary shaft to supply the oil to a compression device and to lubricate a bearing portion. The scroll compressor may include a casing, a drive motor, a rotary shaft, a main frame, a fixed scroll, and an orbiting scroll. A medium pressure chamber may be formed in or at a middle of the main frame, the fixed scroll, and the orbiting scroll. A pocket groove configured to guide oil discharged through the oil hole to the medium pressure chamber may be formed in an upper surface of the orbiting scroll, and a differential pressure path configured to guide the oil guided to the medium pressure chamber to the compression chamber may be provided in the fixed scroll.
    Type: Application
    Filed: November 22, 2019
    Publication date: March 19, 2020
    Inventors: Kangwook LEE, Taekyoung KIM, Cheol Hwan KIM, Byeongchul LEE
  • Publication number: 20200088194
    Abstract: A scroll compressor, and more particularly, to a scroll compressor including a communication groove which may decrease discharge resistance is provided. The scroll compressor may include a fixed scroll having a fixed end plate and a fixed wrap, and an orbiting scroll configured to perform an orbiting movement about the fixed scroll and having an orbiting end plate and an orbiting wrap. A communication groove in the form of a recessed groove may be formed in an inner surface of the orbiting end plate, and a refrigerant may flow through the communication groove according to a state in which the fixed wrap overlaps the communication groove such that there is an effect in that an opening efficiency of a discharge hole is improved at an initial stage of discharge.
    Type: Application
    Filed: November 22, 2019
    Publication date: March 19, 2020
    Inventors: Yong Kyu CHOI, Cheol Hwan Kim, Kangwook Lee, Jungsun Choi
  • Publication number: 20190384134
    Abstract: In the electrochromic device according to an embodiment of the present application, when the first voltage is applied to the electrochromic device in a state that the electrochromic element has the first state, the electrochromic device becomes the second state, and when the first voltage is applied to the electrochromic element in a state that the electrochromic element has the fourth state, the electrochromic element becomes the third state.
    Type: Application
    Filed: August 30, 2019
    Publication date: December 19, 2019
    Inventors: Sang Hyun Park, Byoung Dong Kim, Hyun Jong Kim, Cheol Hwan Kim, Sang Woo Yoo, Yun Chul Choi, Sung Joong Kim, Kwang Jin Jeon, Hyeon Jun Kong, Jin Ah Sohn
  • Publication number: 20190345942
    Abstract: A scroll compressor includes a drive motor, a rotary shaft coupled to the drive motor, a main frame disposed below the drive motor, a fixed scroll disposed below the main frame, an orbiting scroll disposed between the main frame and the fixed scroll and eccentrically coupled to the rotary shaft, and an Oldham's ring coupled to the main frame and the orbiting scroll and configured to restrict rotation of the orbiting scroll relative to the fixed scroll. The Oldham's ring includes: a ring body, a first key that receives a first fixing boss of the ring body and that is configured to couple to the main frame, and a second key that receives a second fixing boss of the ring body and that is configured to couple to the orbiting scroll.
    Type: Application
    Filed: May 10, 2019
    Publication date: November 14, 2019
    Inventors: Sang Baek PARK, Jungsun CHOI, Cheol Hwan KIM
  • Publication number: 20190345933
    Abstract: A scroll compressor includes a casing; a drive motor; a rotary shaft; a fixed scroll including a fixed wrap; and an orbiting scroll eccentrically coupled to rotary shaft and including an orbiting wrap configured to engage with the fixed wrap. At least one of the fixed wrap or the orbiting wrap defines an offset section that is defined between the fixed wrap and the orbiting wrap and that is greater than an orbital radius corresponding to a distance between the fixed wrap and the orbiting wrap in a state in which a center of the fixed scroll is aligned to a center of the orbiting scroll. The offset section is disposed at a contact portion between the fixed wrap and the orbiting wrap. The contact portion has a maximum length based on a rotation angle of the rotary shaft being within a pre-set range with respect to a reference point.
    Type: Application
    Filed: May 10, 2019
    Publication date: November 14, 2019
    Inventors: Jungsun CHOI, Sang Baek PARK, Cheol Hwan KIM
  • Patent number: 10237398
    Abstract: The present invention relates to an apparatus for reverse power feeding in accordance with communication line environments and a method thereof, which measure line resistance (e.g., a difference in impedance depending on a distance between a customer premise (CP) and a distribution point (DP)) of a communication line (e.g., a twisted pair copper wire) connected to a distribution point at a customer premise and reflect the measured line resistance to perform stable power feeding to the distribution point.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: March 19, 2019
    Assignee: UBIQUOSS INC.
    Inventors: Cheol Hwan Kim, Jae Kug Kim
  • Publication number: 20190024664
    Abstract: A scroll compressor is provided which is capable of supplying oil stored in an oil storage chamber upward through a rotary shaft to lubricate a bearing portion.
    Type: Application
    Filed: December 4, 2017
    Publication date: January 24, 2019
    Inventors: Cheol Hwan Kim, Kangwook Lee, Byeongchul Lee, Yong Kyu Choi
  • Publication number: 20190010945
    Abstract: A scroll compressor is provided, that may include a connection groove to reduce discharge resistance. The scroll compressor may include a fixed scroll including a fixed end plate and a feed wrap and an orbiting scroll, rotating with respect to the fixed scroll and including an orbiting end plate and an orbiting wrap, and structure in which a connection groove having a concave groove shape provided at an inner surface of the fixed end plate to allow a refrigerant to flow through the connection groove depending on an overlapping state of the fixed wrap and the connection groove, thereby providing an effect of increasing opening efficiency of discharge holes at a beginning of discharge.
    Type: Application
    Filed: December 4, 2017
    Publication date: January 10, 2019
    Inventors: Yong Kyu CHOI, Cheol Hwan Kim, Howon Lee
  • Publication number: 20180372103
    Abstract: A compressor is provided having an integrated flow path structure in which an oil flow path and an intermediate pressure flow path are integrated into one in a compression unit, thereby simplifying a flow path of the compression unit. The compressor may include at least one integrated flow path in which the oil flow path and the refrigerant gas flow are integrated into one in a fixed scroll. The at least one integrated flow path may connect an intermediate pressure chamber and a compression chamber in a compressors unit. The at least one integrated flow path may provide a compressed refrigerant in the compression chamber to the intermediate pressure chamber and provide oil in the intermediate pressure chamber to the compression chamber, simplifying the flow path of the compression unit.
    Type: Application
    Filed: December 4, 2017
    Publication date: December 27, 2018
    Inventors: Yong Kyu CHOI, Nara Han, Cheol Hwan Kim, Byeongchul Lee
  • Publication number: 20180372099
    Abstract: A scroll compressor, and more particularly, to a scroll compressor including a communication groove which may decrease discharge resistance is provided. The scroll compressor may include a fixed scroll having a fixed end plate and a fixed wrap, and an orbiting scroll configured to perform an orbiting movement about the fixed scroll and having an orbiting end plate and an orbiting wrap. A communication groove in the form of a recessed groove may be formed in an inner surface of the orbiting end plate, and a refrigerant may flow through the communication groove according to a state in which the fixed wrap overlaps the communication groove such that there is an effect in that an opening efficiency of a discharge hole is improved at an initial stage of discharge.
    Type: Application
    Filed: December 4, 2017
    Publication date: December 27, 2018
    Inventors: Yong Kyu CHOI, Cheol Hwan Kim, Kangwook Lee, Jungsun Choi
  • Publication number: 20180372098
    Abstract: A compressor is provided which is configured to allow lubrication of a thrust surface through an oil groove formed in a thrust surface of a fixed scroll. Also, a scroll compressor is provided which smoothly supplies oil to a thrust surface of a fixed scroll by including a fixed scroll having an oil groove formed in the thrust surface of a fixed scroll sidewall, and allows an injection pressure acting on an orbiting scroll in an upward direction to be added by supplying the oil guided to the oil groove to the thrust surface of the fixed scroll such that an overturn moment generated in the orbiting scroll may be offset.
    Type: Application
    Filed: December 4, 2017
    Publication date: December 27, 2018
    Inventors: Sang baek PARK, Jungsun Choi, Cheol Hwan Kim, Byeongchul Lee