Patents by Inventor Kyoung Min Kang

Kyoung Min Kang 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: 11404955
    Abstract: A method for controlling a fault of a three phase four wire interlinking converter system according to one embodiment of the present disclosure comprises obtaining a first d-q-o coordinate plane based on an internal phase angle of output voltage produced from each phase of an inverter; converting the first d-q-o coordinate plane to a second d-q-o coordinate plane based on the o-axis configured differently from the first d-q-o coordinate plane; obtaining an output voltage vector for determining a fault location by performing d-q transform on the second d-q-o coordinate plane; determining occurrence of a fault and an area related to the fault based on the output voltage vector; and in the occurrence of the fault, allocating a zero voltage vector to the area related to the fault.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: August 2, 2022
    Assignee: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Chung Yuen Won, Kwang Su Na, Mi Na Kim, Bong Yeon Choi, Kyoung Min Kang, Hoon Lee, Chang Gyun An, Tae Gyu Kim, Jun Sin Yi
  • Publication number: 20220209140
    Abstract: The present disclosure relates to an organic metal compound having the following structure of Formula 1, an organic light emitting diode (OLED) and an organic light emitting device that includes the organic metal compound. The OLED and the organic light emitting device including the organic metal compound can improve their luminous efficiency, luminous color purity and lifespan.
    Type: Application
    Filed: November 22, 2021
    Publication date: June 30, 2022
    Applicants: LG DISPLAY CO., LTD., ROHM AND HAAS ELECTRONIC MATERIALS KOREA LTD.
    Inventors: Hee-Jun PARK, Ku-Sun CHOUNG, Yoo-Jeong JEONG, Sung-Jin PARK, Jae-Min MOON, Hee-Ryong KANG, Kyoung-Jin PARK, Hyun KIM, Ga-Won LEE, Seung-Hyun YOON
  • Publication number: 20220209139
    Abstract: The present disclosure relates to an organic metal compound, an organic light emitting diode and an organic light emitting device having the compound, in particular, to an organic metal compound having the following structure of Formula 1, an organic light emitting diode (OLED) and an organic light emitting device that includes the organic metal compound. The OLED and the organic light emitting device including the organic metal compound can improve their luminous efficiency, luminous color purity and lifespan.
    Type: Application
    Filed: October 6, 2021
    Publication date: June 30, 2022
    Applicants: LG Display Co., Ltd, Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: Hee-Jun PARK, Ku-Sun CHOUNG, Yoo-Jeong JEONG, Sung-Jin PARK, Jae-Min MOON, Hee-Ryong KANG, Kyoung-Jin PARK, Hyun KIM, Ga-Won LEE, Seung-hyun YOON
  • Publication number: 20220045601
    Abstract: A method for controlling a fault of a three phase four wire interlinking converter system according to one embodiment of the present disclosure comprises obtaining a first d-q-o coordinate plane based on an internal phase angle of output voltage produced from each phase of an inverter; converting the first d-q-o coordinate plane to a second d-q-o coordinate plane based on the o-axis configured differently from the first d-q-o coordinate plane; obtaining an output voltage vector for determining a fault location by performing d-q transform on the second d-q-o coordinate plane; determining occurrence of a fault and an area related to the fault based on the output voltage vector; and in the occurrence of the fault, allocating a zero voltage vector to the area related to the fault.
    Type: Application
    Filed: September 3, 2021
    Publication date: February 10, 2022
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Chung Yuen WON, Kwang Su NA, Mi Na KIM, Bong Yeon CHOI, Kyoung Min KANG, Hoon LEE, Chang Gyun AN, Tae Gyu KIM, Jun Sin YI
  • Publication number: 20220045599
    Abstract: A method for controlling a fault of a three phase four wire interlinking converter system according to one embodiment of the present disclosure comprises obtaining a first d-q-o coordinate plane based on an internal phase angle of output voltage produced from each phase of an inverter; converting the first d-q-o coordinate plane to a second d-q-o coordinate plane based on the o-axis configured differently from the first d-q-o coordinate plane; obtaining an output voltage vector for determining a fault location by performing d-q transform on the second d-q-o coordinate plane; determining occurrence of a fault and an area related to the fault based on the output voltage vector; and in the occurrence of the fault, allocating a zero voltage vector to the area related to the fault.
    Type: Application
    Filed: June 21, 2021
    Publication date: February 10, 2022
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Chung Yuen WON, Kwang Su NA, Mi Na KIM, Bong Yeon CHOI, Kyoung Min KANG, Hoon LEE, Chang Gyun AN, Tae Gyu KIM, Jun Sin YI
  • Patent number: 11149120
    Abstract: Provided is a method for manufacturing thermoplastic polymer particles, the method comprising the steps of: supplying a thermoplastic polymer resin to an extruder and extruding the same; supplying the extruded thermoplastic polymer resin and air to a nozzle, bringing the thermoplastic polymer resin into contact with the air to granulate the thermoplastic polymer resin, and then discharging the granulated thermoplastic polymer resin; and supplying discharged thermoplastic polymer particles to a cooling unit to cool the thermoplastic polymer particles, and then collecting the cooled thermoplastic polymer particles.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: October 19, 2021
    Inventors: Hee-Jung Lee, Sung Yong Kang, Kyoung Min Kang, Min Gyung Kim, Chang-Young Park, Jae Ho Lim, Jun Ho Choi, Jae Han Song, Yu Jin Go
  • Patent number: 11118019
    Abstract: The present invention provides thermoplastic polyurethane particles, which are formed in a continuous matrix phase from a thermoplastic polyurethane resin and have a particle diameter of 200-500 ?m. In a differential scanning calorimetry (DSC) curve of the thermoplastic polyurethane particles, derived from the analysis of a temperature rise of 10° C./min by DSC, a peak of the cold crystallization temperature (Tcc) is shown at a temperature between the glass transition temperature (Tg) and the melting point (Tm). The thermoplastic polyurethane particles have a compression degree of 10-20%.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: September 14, 2021
    Inventors: Min Gyung Kim, Sung Yong Kang, Kyoung Min Kang, Hee-Jung Lee, Chang-Young Park, Jae Ho Lim, Jun Ho Choi, Jae Han Song, Yu Jin Go
  • Publication number: 20210253802
    Abstract: Provided are thermoplastic polymer particles having an aspect ratio of 1.00 or more and less than 1.05, and a roundness of 0.95 to 1.00. The thermoplastic polymer particles are formed from a thermoplastic polymer resin in a continuous matrix phase. The thermoplastic polymer particles show a peak cold crystallization temperature (Tcc) at a temperature between a glass transition temperature (Tg) and the melting point (Tm) in a differential scanning calorimetry (DSC) curve which is derived from temperature rise analysis at 10° C./min by differential scanning calorimetry.
    Type: Application
    Filed: March 25, 2021
    Publication date: August 19, 2021
    Applicant: LG Hausys, Ltd.
    Inventors: Jae Ho Lim, Sung Yong Kang, Kyoung Min Kang, Hee-Jung Lee, Min Gyung Kim, Chang-Young Park, Jun Ho Choi, Jae Han Song, Yu Jin Go
  • Patent number: 11066527
    Abstract: The present invention provides polylactic acid particles, which are formed in a continuous matrix phase from a polylactic acid resin and have a particle diameter of 1 to 100 ?m. In a differential scanning calorimetry (DSC) curve of the polylactic acid particles, derived from the analysis by DSC using a temperature rise of 10° C./min, a peak of the cold crystallization temperature (Tcc) is shown at a temperature between the glass transition temperature (Tg) and the melting point (Tm). The polylactic acid particles have an aspect ratio of more than or equal to 1.00 and less than 1.05 and a roundness of 0.95 to 1.00. The polylactic acid particles have a flow time of 20 to 30 seconds.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: July 20, 2021
    Inventors: Kyoung Min Kang, Sung Yong Kang, Hee-Jung Lee, Min Gyung Kim, Chang-Young Park, Jae Ho Lim, Jun Ho Choi, Jae Han Song, Yu Jin Go
  • Patent number: 11001677
    Abstract: Provided are thermoplastic polymer particles having an aspect ratio of 1.00 or more and less than 1.05, and a roundness of 0.95 to 1.00. The thermoplastic polymer particles are formed from a thermoplastic polymer resin in a continuous matrix phase. The thermoplastic polymer particles show a peak cold crystallization temperature (Tcc) at a temperature between a glass transition temperature (Tg) and the melting point (Tm) in a differential scanning calorimetry (DSC) curve which is derived from temperature rise analysis at 10° C./min by differential scanning calorimetry.
    Type: Grant
    Filed: March 9, 2018
    Date of Patent: May 11, 2021
    Inventors: Jae Ho Lim, Sung Yong Kang, Kyoung Min Kang, Hee-Jung Lee, Min Gyung Kim, Chang-Young Park, Jun Ho Choi, Jae Han Song, Yu Jin Go
  • Patent number: 10808088
    Abstract: Provided are a thermoplastic composite and a preparation method therefor, the composite comprising: a fiber structure having a network structure comprising at least one layer of fiber woven sheet; thermoplastic resin particles having a particle diameter of 1-50 ?m; and a particulate flame retardant, wherein the thermoplastic resin particles and the particulate flame retardant are impregnated into the fiber structure. In addition, a panel comprising a thermo-compressed product of the thermoplastic composite is provided.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: October 20, 2020
    Assignee: LG HAUSYS, LTD.
    Inventors: Kyoung-Min Kang, Sung-Yong Kang, Min-Gyung Kim, Chang-Young Park, Jae-Ho Lim
  • Publication number: 20200316819
    Abstract: Provided is a method for manufacturing thermoplastic polymer particles, the method comprising the steps of: supplying a thermoplastic polymer resin to an extruder and extruding the same; supplying the extruded thermoplastic polymer resin and air to a nozzle, bringing the thermoplastic polymer resin into contact with the air to granulate the thermoplastic polymer resin, and then discharging the granulated thermoplastic polymer resin; and supplying discharged thermoplastic polymer particles to a cooling unit to cool the thermoplastic polymer particles, and then collecting the cooled thermoplastic polymer particles.
    Type: Application
    Filed: March 9, 2018
    Publication date: October 8, 2020
    Applicant: LG Hausys, Ltd.
    Inventors: Hee-Jung Lee, Sung Yong Kang, Kyoung Min Kang, Min Gyung Kim, Chang-Young Park, Jae Ho Lim, Jun Ho Choi, Jae Han Song, Yu Jin Go
  • Patent number: 10647824
    Abstract: A thermoplastic elastomer (TPE) resin powder includes spherical particles of a thermoplastic elastomer resin. The spherical particles have an average particle diameter of 50 ?m to 300 ?m. The thermoplastic elastomer resin powder is suitable for a powder slush molding (PSM) process, and the molded article produced therefrom has excellent surface characteristics.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: May 12, 2020
    Assignee: LG HAUSYS, LTD.
    Inventors: Deok-Ryul Hwang, Sung-Yong Kang, Jun-Beom Shin, Kyoung-Min Kang
  • Publication number: 20200071470
    Abstract: Provided are thermoplastic polymer particles having an aspect ratio of 1.00 or more and less than 1.05, and a roundness of 0.95 to 1.00. The thermoplastic polymer particles are formed from a thermoplastic polymer resin in a continuous matrix phase. The thermoplastic polymer particles show a peak cold crystallization temperature (Tcc) at a temperature between a glass transition temperature (Tg) and the melting point (Tm) in a differential scanning calorimetry (DSC) curve which is derived from temperature rise analysis at 10° C./min by differential scanning calorimetry.
    Type: Application
    Filed: March 9, 2018
    Publication date: March 5, 2020
    Applicant: LG Hausys, Ltd.
    Inventors: Jae Ho Lim, Sung Yong Kang, Kyoung Min Kang, Hee-Jung Lee, Min Gyung Kim, Chang-Young Park, Jun Ho Choi, Jae Han Song, Yu Jin Go
  • Publication number: 20200032005
    Abstract: The present invention provides thermoplastic polyurethane particles, which are formed in a continuous matrix phase from a thermoplastic polyurethane resin and have a particle diameter of 200-500 ?m. In a differential scanning calorimetry (DSC) curve of the thermoplastic polyurethane particles, derived from the analysis of a temperature rise of 10° C./min by DSC, a peak of the cold crystallization temperature (Tcc) is shown at a temperature between the glass transition temperature (Tg) and the melting point (Tm). The thermoplastic polyurethane particles have a compression degree of 10-20%.
    Type: Application
    Filed: March 9, 2018
    Publication date: January 30, 2020
    Applicant: LG Hausys, Ltd.
    Inventors: Min Gyung Kim, Sung Yong Kang, Kyoung Min Kang, Hee-Jung Lee, Chang-Young Park, Jae Ho Lim, Jun Ho Choi, Jae Han Song, Yu Jin Go
  • Publication number: 20200032049
    Abstract: The present invention provides polylactic acid particles, which are formed in a continuous matrix phase from a polylactic acid resin and have a particle diameter of 1 to 100 ?m. In a differential scanning calorimetry (DSC) curve of the polylactic acid particles, derived from the analysis by DSC using a temperature rise of 10° C./min, a peak of the cold crystallization temperature (Tcc) is shown at a temperature between the glass transition temperature (Tg) and the melting point (Tm). The polylactic acid particles have an aspect ratio of more than or equal to 1.00 and less than 1.05 and a roundness of 0.95 to 1.00. The polylactic acid particles have a flow time of 20 to 30 seconds.
    Type: Application
    Filed: March 9, 2018
    Publication date: January 30, 2020
    Applicant: LG Hausys, Ltd.
    Inventors: Kyoung Min Kang, Sung Yong Kang, Hee-Jung Lee, Min Gyung Kim, Chang-Young Park, Jae Ho Lim, Jun Ho Choi, Jae Han Song, Yu Jin Go
  • Publication number: 20200032012
    Abstract: Provided are a thermoplastic composite and a preparation method therefor, the composite comprising: a fiber structure having a network structure comprising at least one layer of fiber woven sheet; thermoplastic resin particles having a particle diameter of 1-50 ?m; and a particulate flame retardant, wherein the thermoplastic resin particles and the particulate flame retardant are impregnated into the fiber structure. In addition, a panel comprising a thermo-compressed product of the thermoplastic composite is provided.
    Type: Application
    Filed: June 21, 2017
    Publication date: January 30, 2020
    Inventors: Kyoung-Min KANG, Sung-Yong KANG, Min-Gyung KIM, Chang-Young PARK, Jae-Ho LIM
  • Patent number: 10508176
    Abstract: Disclosed herein is a foamable resin composition for a foam sheet including polylactic acid resin particles, each of the particles having a particle size of about 1 ?m to about 100 ?m. A process for preparing a particulate polylactic acid resin includes: introducing a polylactic acid resin and then forming a molten polylactic acid spray solution; and injecting the molten polylactic acid spray solution by a melt spray method and simultaneously cooling the molten polylactic acid spray solution to obtain a particulate polylactic acid. In addition, disclosed herein is a process for preparing a foam sheet using the foamable resin composition for a foam sheet including a polylactic acid resin.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: December 17, 2019
    Assignee: LG HAUSYS, LTD.
    Inventors: Jun-Beom Shin, Sung-Yong Kang, Min-Hee Lee, Hea-Won Kwon, Kyoung-Min Kang
  • Patent number: 10450409
    Abstract: Disclosed is a polymer powder having an average particle diameter of 20 ?m to 300 ?m, with a particle diameter of less than 10 ?m of 10 mass % or less, and a particle diameter of greater than 300 ?m of 10 mass % or less. Further, disclosed is a method for preparing a polymer powder, comprising: forming a melt of a polymer; introducing a supercritical fluid into the melt of the polymer to form a mixed composition; and spraying the mixed composition to prepare the polymer powder.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: October 22, 2019
    Assignee: LG HAUSYS, LTD.
    Inventors: Kyoung-Min Kang, Sung-Yong Kang, Jun-Beom Shin, Deok-Ryul Hwang
  • Patent number: 10017620
    Abstract: The present invention relates to a colloid composition for forming a foam sheet including: polylactic acid resin particles having an average diameter of 1 ?m to 100 ?m obtained by pulverizing fibrous particles of a polylactic acid resin.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: July 10, 2018
    Assignee: LG HAUSYS, LTD.
    Inventors: Jun-Beom Shin, Sung-Yong Kang, Min-Hee Lee, Hea-Won Kwon, Kyoung-Min Kang