Patents by Inventor Geol CHOI

Geol CHOI 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: 10639261
    Abstract: The present invention relates to a method for preparing 3,6-anhydro-L-galactose, and use thereof. More specifically, 3,6-anhydro-L-galactose, which is a monosaccharide constituting agar, is produced in a high yield through chemical and enzymatic methods, and the physiological activities thereof such as whitening, moisturizing, antioxidant, antiinflammatory activities and the like are displayed, thereby enabling industrial use thereof.
    Type: Grant
    Filed: August 10, 2018
    Date of Patent: May 5, 2020
    Assignee: Korea University Research and Business Foundation
    Inventors: Kyoung Heon Kim, In Geol Choi, Nam Joo Kang, Eun-Ju Yun, Sae Young Lee, Ji Hye Kim, Young Ah Kim, Bo Bae Kim, Eun Ji Baek
  • Patent number: 10548828
    Abstract: The present invention relates to a use of 3,6-anhydro-L-galactose for preventing dental caries. More specifically, 3,6-anhydro-L-galactose inhibits the growth of oral microorganisms and exhibits anti-caries activity to inhibit the production of acids caused by the consumption of a carbon source by the oral microorganisms. Thus, 3,6-anhydro-L-galactose can be used in pharmaceuticals, food products, oral hygiene preparations, etc. for preventing, ameliorating or treating oral diseases caused by oral microorganisms, such as dental caries, gingivitis, periodontitis, oral mucosal ulcer, halitosis or xerostomia.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: February 4, 2020
    Assignee: Korea University Research and Business Foundation
    Inventors: Kyoung Heon Kim, In-Geol Choi, Eun-Ju Yun, Ah-Reum Lee
  • Patent number: 10405387
    Abstract: Provided is a light emission device. When the size of an input voltage exceeds a minimum light emission voltage, all light emission elements emit light always irrespective of the size of a voltage, and as the size of the voltage decreases, the light emission device has a configuration in which the light emission elements are connected in parallel with each other, and as the size of the voltage increases, the light emission device has a configuration in which the light emission elements are connected in series with each other.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: September 3, 2019
    Assignee: LUMENS CO., LTD.
    Inventors: Soo Geun Yoo, Hong Geol Choi, Ho Young Lee, Myeong Kook Gong
  • Publication number: 20190132913
    Abstract: Provided is a light emission device. When the size of an input voltage exceeds a minimum light emission voltage, all light emission elements emit light always irrespective of the size of a voltage, and as the size of the voltage decreases, the light emission device has a configuration in which the light emission elements are connected in parallel with each other, and as the size of the voltage increases, the light emission device has a configuration in which the light emission elements are connected in series with each other.
    Type: Application
    Filed: November 20, 2018
    Publication date: May 2, 2019
    Applicant: LUMENS CO., LTD.
    Inventors: Soo Geun YOO, Hong Geol CHOI, Ho Young LEE, Myeong Kook GONG
  • Publication number: 20190024069
    Abstract: The present invention relates to a heat-resistant agarase and a monosaccharide production method using same. More particularly, in the present invention, a heat-resistant agarase may be used to produce galactose and 3,6-anhydro-L-galactose at high yield by efficiently breaking down agarose or agar without a chemical pretreatment, a neutralization process, or an agarotriose hydrolase treatment process.
    Type: Application
    Filed: January 17, 2017
    Publication date: January 24, 2019
    Applicant: Korea University Research and Business Foundation
    Inventors: Kyoung Heon KIM, In-Geol CHOI, Jung Hyun KIM, Eun-Ju YUN
  • Patent number: 10165637
    Abstract: Provided is a light emission device. When the size of an input voltage exceeds a minimum light emission voltage, all light emission elements emit light always irrespective of the size of a voltage, and as the size of the voltage decreases, the light emission device has a configuration in which the light emission elements are connected in parallel with each other, and as the size of the voltage increases, the light emission device has a configuration in which the light emission elements are connected in series with each other.
    Type: Grant
    Filed: May 30, 2018
    Date of Patent: December 25, 2018
    Assignee: LUMENS CO., LTD.
    Inventors: Soo Geun Yoo, Hong Geol Choi, Ho Young Lee, Myeong Kook Gong
  • Publication number: 20180344607
    Abstract: The present invention relates to a method for preparing 3,6-anhydro-L-galactose, and use thereof. More specifically, 3,6-anhydro-L-galactose, which is a monosaccharide constituting agar, is produced in a high yield through chemical and enzymatic methods, and the physiological activities thereof such as whitening, moisturizing, antioxidant, antiinflammatory activities and the like are displayed, thereby enabling industrial use thereof.
    Type: Application
    Filed: August 10, 2018
    Publication date: December 6, 2018
    Applicant: Korea University Research and Business Foundation
    Inventors: Kyoung Heon Kim, In-Geol Choi, Nam Joo Kang, Eun-Ju Yun, Sae Young Lee, Ji Hye Kim, Young Ah Kim, Bo Bae Kim, Eun Ji Baek
  • Publication number: 20180280272
    Abstract: The present invention relates to a use of 3,6-anhydro-L-galactose for preventing dental caries. More specifically, 3,6-anhydro-L-galactose inhibits the growth of oral microorganisms and exhibits anti-caries activity to inhibit the production of acids caused by the consumption of a carbon source by the oral microorganisms. Thus, 3,6-anhydro-L-galactose can be used in pharmaceuticals, food products, oral hygiene preparations, etc. for preventing, ameliorating or treating oral diseases caused by oral microorganisms, such as dental caries, gingivitis, periodontitis, oral mucosal ulcer, halitosis or xerostomia.
    Type: Application
    Filed: October 14, 2016
    Publication date: October 4, 2018
    Applicant: Korea University Research and Business Foundation
    Inventors: Kyoung Heon Kim, In-Geol Choi, Eun-Ju Yun, Ah-Reum Lee
  • Publication number: 20180279427
    Abstract: Provided is a light emission device. When the size of an input voltage exceeds a minimum light emission voltage, all light emission elements emit light always irrespective of the size of a voltage, and as the size of the voltage decreases, the light emission device has a configuration in which the light emission elements are connected in parallel with each other, and as the size of the voltage increases, the light emission device has a configuration in which the light emission elements are connected in series with each other.
    Type: Application
    Filed: May 30, 2018
    Publication date: September 27, 2018
    Applicant: LUMENS CO., LTD.
    Inventors: Soo Geun YOO, Hong Geol CHOI, Ho Young LEE, Myeong Kook GONG
  • Patent number: 10071041
    Abstract: The present invention relates to a method for preparing 3,6-anhydro-L-galactose, and use thereof. More specifically, 3,6-anhydro-L-galactose, which is a monosaccharide constituting agar, is produced in a high yield through chemical and enzymatic methods, and the physiological activities thereof such as whitening, moisturizing, antioxidant, anti-inflammatory activities and the like are displayed, thereby enabling industrial use thereof.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: September 11, 2018
    Assignee: Korea University Research and Business Foundation
    Inventors: Kyoung Heon Kim, In Geol Choi, Nam Joo Kang, Eun Ju Yun, Sae Young Lee, Ji Hye Kim, Young Ah Kim, Bo Bae Kim, Eun Ji Baek
  • Publication number: 20180226808
    Abstract: The present invention relates to a battery module balancing method using a single inductor. The battery module balancing method can balance a plurality of battery cells using a single inductor in each of battery modules having modularized battery cells, and balance the plurality of modules using a single inductor. Thus, the battery module balancing method can reduce the number of balancing operations and raise balancing power, thereby improving balancing efficiency.
    Type: Application
    Filed: February 1, 2018
    Publication date: August 9, 2018
    Inventors: Bong Koo KANG, Sang Won LEE, Kyung Min LEE, Yoon Geol CHOI
  • Patent number: 10020660
    Abstract: The present invention relates to a technique for implementing a bidirectional DC-DC converter applied to an energy storage system. The bidirectional DC-DC converter includes a magnetically coupled inductor and a charging/discharging voltage storage unit between a DC link power supply and a battery power supply, and implements a high gain through a two-step voltage transformation process when a charging process or discharging process is performed. Thus, the bidirectional DC-DC converter can reduce the construction cost of the battery cell, guarantee a high voltage available range, and reduce the influence of leakage inductance.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: July 10, 2018
    Assignee: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Bong Koo Kang, Sang Won Lee, Kyung Min Lee, Yoon Geol Choi
  • Patent number: 10015853
    Abstract: Provided is a light emission device. When the size of an input voltage exceeds a minimum light emission voltage, all light emission elements emit light always irrespective of the size of a voltage, and as the size of the voltage decreases, the light emission device has a configuration in which the light emission elements are connected in parallel with each other, and as the size of the voltage increases, the light emission device has a configuration in which the light emission elements are connected in series with each other.
    Type: Grant
    Filed: August 27, 2017
    Date of Patent: July 3, 2018
    Assignee: LUMENS CO., LTD.
    Inventors: Soo Geun Yoo, Hong Geol Choi, Ho Young Lee, Myeong Kook Gong
  • Patent number: 9902983
    Abstract: The present invention relates to agarooligosaccharide hydrolase and a method for producing 3,6-anhydro-L-galactose and galactose from agarose by using the same. More specifically, the production yield of 3,6-anhydro-L-galactose and galactose from agarose, that is, the saccharification yield, is improved by using ?-agarooligosaccharide hydrolase having an agarotriose hydrolytic activity.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: February 27, 2018
    Assignee: Korea University Research and Business Foundation
    Inventors: Kyoung Heon Kim, In-Geol Choi, Chan Hyoung Lee, Hee Taek Kim, Eun-Ju Yun
  • Publication number: 20180019606
    Abstract: The present invention relates to a battery cell balancing circuit for balancing battery cells of a battery pack using a single inductor. The battery cell balancing circuit includes a first access unit, a second access unit and an electrical energy transfer unit for an electrical energy path of a battery pack. The battery cell balancing circuit selectively connects a strong cell or weak cell of the battery pack to a single inductor by controlling switching operations of switches of the first and second access units and the electrical energy transfer unit, thereby performing battery cell balancing. Thus, the power efficiency of the battery pack can be improved, and the size and price thereof can be reduced.
    Type: Application
    Filed: July 13, 2017
    Publication date: January 18, 2018
    Inventors: Bong Koo KANG, Sang Won LEE, Kyung Min LEE, Yoon Geol CHOI
  • Publication number: 20170360671
    Abstract: The present invention relates to a method for preparing 3,6-anhydro-L-galactose, and use thereof. More specifically, 3,6-anhydro-L-galactose, which is a monosaccharide constituting agar, is produced in a high yield through chemical and enzymatic methods, and the physiological activities thereof such as whitening, moisturizing, antioxidant, anti-inflammatory activities and the like are displayed, thereby enabling industrial use thereof.
    Type: Application
    Filed: August 29, 2017
    Publication date: December 21, 2017
    Applicant: Korea University Research and Business Foundation
    Inventors: Kyoung Heon Kim, In Geol Choi, Nam Joo Kang, Eun Ju Yun, III, Sae Young Lee, Ji Hye Kim, Young Ah Kim, Bo Bae Kim, Eun Ji Baek
  • Publication number: 20170354001
    Abstract: Provided is a light emission device. When the size of an input voltage exceeds a minimum light emission voltage, all light emission elements emit light always irrespective of the size of a voltage, and as the size of the voltage decreases, the light emission device has a configuration in which the light emission elements are connected in parallel with each other, and as the size of the voltage increases, the light emission device has a configuration in which the light emission elements are connected in series with each other.
    Type: Application
    Filed: August 27, 2017
    Publication date: December 7, 2017
    Applicant: LUMENS CO., LTD.
    Inventors: Soo Geun YOO, Hong Geol CHOI, Ho Young LEE, Myeong Kook GONG
  • Patent number: 9824952
    Abstract: Disclosed herein is a light emitting device package strip capable of being used for a display application or an illumination application. The light emitting device package strip may include: a light emitting device package; and an upper adhesive sheet attached onto an upper surface of the light emitting device package so as to support the light emitting device package, wherein the light emitting device package includes: a flip-chip light emitting device having a first electrode pad and a second electrode pad; and a molding member formed to enclose side surfaces and an upper surface of the light emitting device such that the first electrode pad and the second electrode pad are exposed.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: November 21, 2017
    Assignee: LUMENS CO., LTD.
    Inventors: Hong-Geol Choi, Sung-Ok Choi, Sang-Hyub Gim, Seung-Hyun Oh, Yun-Geon Cho, Bo-Gyun Kim, Suk-Min Han, Jun-Hyeok Han
  • Patent number: 9788377
    Abstract: Provided is a light emission device. When the size of an input voltage exceeds a minimum light emission voltage, all light emission elements emit light always irrespective of the size of a voltage, and as the size of the voltage decreases, the light emission device has a configuration in which the light emission elements are connected in parallel with each other, and as the size of the voltage increases, the light emission device has a configuration in which the light emission elements are connected in series with each other.
    Type: Grant
    Filed: November 20, 2016
    Date of Patent: October 10, 2017
    Assignee: LUMENS CO., LTD.
    Inventors: Soo Geun Yoo, Hong Geol Choi, Ho Young Lee, Myeong Kook Gong
  • Publication number: 20170126028
    Abstract: The present invention relates to a technique for implementing a bidirectional DC-DC converter applied to an energy storage system. The bidirectional DC-DC converter includes a magnetically coupled inductor and a charging/discharging voltage storage unit between a DC link power supply and a battery power supply, and implements a high gain through a two-step voltage transformation process when a charging process or discharging process is performed. Thus, the bidirectional DC-DC converter can reduce the construction cost of the battery cell, guarantee a high voltage available range, and reduce the influence of leakage inductance.
    Type: Application
    Filed: October 28, 2016
    Publication date: May 4, 2017
    Inventors: Bong Koo KANG, Sang Won LEE, Kyung Min LEE, Yoon Geol CHOI