Patents by Inventor Byung-sam Choi

Byung-sam 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).

  • Publication number: 20240110170
    Abstract: The present disclosure relates to a modified polypeptide having xylanase activity and the use thereof.
    Type: Application
    Filed: December 15, 2021
    Publication date: April 4, 2024
    Applicant: CJ CHEILJEDANG CORPORATION
    Inventors: Tae Joo YANG, Jihyun SHIM, Eun Jung CHOI, Byung-sam SON, Jae Yong PARK
  • Patent number: 10375858
    Abstract: Disclosed is a housing for electronic/electrical that includes an inner panel and an outer panel, a strip of metal plate, and a strip of shape memory material. The inner panel and the outer panel are disposed parallel to each other at regular intervals to define an internal space. The strip of metal plate extends from an inner surface of the outer panel. The strip of shape memory material extends from an inner surface of the inner panel and is attached or detached to/from the metal plate on the outer panel while changing into an original straight shape or a bent shape according to a temperature variation. Here, when the temperature increase beyond a first transition temperature, the shape memory material straightens to form a heat transfer path. At a low temperature environment, the shape memory material bends and is separated from the metal plate to interrupt the heat transfer path.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: August 6, 2019
    Assignee: Hyundai Motor Company
    Inventors: Jin Woo Kwak, Kyong Hwa Song, Byung Sam Choi, Han Saem Lee
  • Publication number: 20170172013
    Abstract: Disclosed is a housing for electronic/electrical that includes an inner panel and an outer panel, a strip of metal plate, and a strip of shape memory material. The inner panel and the outer panel are disposed parallel to each other at regular intervals to define an internal space. The strip of metal plate extends from an inner surface of the outer panel. The strip of shape memory material extends from an inner surface of the inner panel and is attached or detached to/from the metal plate on the outer panel while changing into an original straight shape or a bent shape according to a temperature variation. Here, when the temperature increase beyond a first transition temperature, the shape memory material straightens to form a heat transfer path. At a low temperature environment, the shape memory material bends and is separated from the metal plate to interrupt the heat transfer path.
    Type: Application
    Filed: February 27, 2017
    Publication date: June 15, 2017
    Inventors: Jin Woo Kwak, Kyong Hwa Song, Byung Sam Choi, Han Saem Lee
  • Patent number: 9603288
    Abstract: A housing for electronic/electrical components includes an inner panel and an outer panel, a strip of metal plate, and a strip of shape memory material. The inner panel and the outer panel are disposed parallel to each other to define an internal space. The strip of metal plate extends from an inner surface of the outer panel. The strip of shape memory material extends from an inner surface of the inner panel and is attached to or detached from the metal plate on the outer panel while changing into an original straight shape or a bent shape according to a temperature variation. When the temperature increases beyond a first transition temperature, the shape memory material straightens to form a heat transfer path. When the temperature falls below a second transition temperature, the shape memory material bends and is separated from the metal plate to interrupt the heat transfer path.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: March 21, 2017
    Assignee: Hyundai Motor Company
    Inventors: Jin Woo Kwak, Kyong Hwa Song, Byung Sam Choi, Han Saem Lee
  • Patent number: 9401500
    Abstract: A battery and battery package is disclosed which improves a battery's heat dissipation capability by using an aluminum material and a phase change material capable of maintaining a suitable temperature through phase change according to a temperature in order to prevent a battery from being deteriorated in terms of performance. More specifically, battery package has a top case and a bottom case as a battery cell case for housing a battery cell. The top and bottom cases are adhered to each other, and either or both the top and bottom cases includes: a top sheet plate repeatedly undulated at predetermined intervals to form a plurality of unidirectionally extended convex parts to be filled with a phase change material; a bottom sheet plate formed in a flat shape and adhered to the top sheet plate; and a phase change material filled in between the convex parts and the bottom sheet plate.
    Type: Grant
    Filed: November 23, 2011
    Date of Patent: July 26, 2016
    Assignee: Hyundai Motor Company
    Inventors: Jin Woo Kwak, Kyong Hwa Song, Han Saem Lee, Byung Sam Choi, Chi Hoon Choi
  • Patent number: 9296935
    Abstract: Disclosed is a micro particle for a thermal control material capable of being applied as a highly thermal conductive material for thermal control, and an apparatus and a method of producing the micro particle for the thermal control material by using an ultrasonic high-temperature vibration scheme. More specifically, a Boron Nitride (BN) particle having a plate shape and an excellent thermal conductivity is coated on a PCM having a shape of a micro bead, to increase the thermal conduction to the inside PCM, so that a phase change is easily generated, and which allows an easy treatment of the PCM in a liquid state at a temperature equal to or higher than a melting point of the PCM.
    Type: Grant
    Filed: December 2, 2014
    Date of Patent: March 29, 2016
    Assignee: Hyundai Motor Company
    Inventors: Han Saem Lee, Do Suck Han, Jin Woo Kwak, Chi Hoon Choi, Kyong Hwa Song, Byung Sam Choi
  • Patent number: 9296871
    Abstract: The present disclosure provides a high heat radiation composite material including a hybrid filler comprising expanded graphite filled with expandable polymeric beads, and a fabrication method thereof. In the method, a dispersion solution is prepared by dispersing expandable polymeric beads in ethanol. Expanded graphite is immersed in the dispersion solution, and heat-treated to remove ethanol, thereby producing the hybrid filler. The hybrid filler is dispersed into the matrix polymer via an extrusion/injection process, thereby producing the composite material.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: March 29, 2016
    Assignee: Hyundai Motor Company
    Inventors: Kyong Hwa Song, Han Saem Lee, Jin Woo Kwak, Byung Sam Choi
  • Patent number: 9065160
    Abstract: Disclosed is a radiant heat plate and a battery cell module having the same. The radiant heat plate is interposed between battery cells. The radiant heat plate includes a high-thermal conductivity plate with excellent thermal conductivity and a composite sheet fixedly laminated on both surfaces of the high-thermal conductivity plate. Here, the composite sheet is formed of a thermoplastic elastomer composite filled with a high-thermal conductivity filler.
    Type: Grant
    Filed: April 11, 2012
    Date of Patent: June 23, 2015
    Assignee: Hyundai Motor Company
    Inventors: Jin Woo Kwak, Kyong Hwa Song, Han Saem Lee, Byung Sam Choi
  • Publication number: 20150152308
    Abstract: Disclosed is a micro particle for a thermal control material capable of being applied as a highly thermal conductive material for thermal control, and an apparatus and a method of producing the micro particle for the thermal control material by using an ultrasonic high-temperature vibration scheme. More specifically, a Boron Nitride (BN) particle having a plate shape and an excellent thermal conductivity is coated on a PCM having a shape of a micro bead, to increase the thermal conduction to the inside PCM, so that a phase change is easily generated, and which allows an easy treatment of the PCM in a liquid state at a temperature equal to or higher than a melting point of the PCM.
    Type: Application
    Filed: December 2, 2014
    Publication date: June 4, 2015
    Inventors: Han Saem Lee, Do Suck Han, Jin Woo Kwak, Chi Hoon Choi, Kyong Hwa Song, Byung Sam Choi
  • Patent number: 9017570
    Abstract: Disclosed is a hybrid filler for an electromagnetic shielding composite material and a method of manufacturing the hybrid filler, by which electromagnetic shielding and absorbing capabilities are improved and heat generated by electromagnetic absorption is effectively removed. The hybrid filler for an electromagnetic shielding composite material includes an expandable graphite (EG) having a plurality of pores, and magnetic particles integrated with a carbon nanotube (CNT) on outer surfaces thereof in a mixed manner, wherein the magnetic particles are inserted into the pores of the EG.
    Type: Grant
    Filed: July 24, 2012
    Date of Patent: April 28, 2015
    Assignee: Hyundai Motor Company
    Inventors: Jin Woo Kwak, Kyong Hwa Song, Han Saem Lee, Byung Sam Choi
  • Patent number: 8926300
    Abstract: Disclosed is a micro particle for a thermal control material capable of being applied as a highly thermal conductive material for thermal control, and an apparatus and a method of producing the micro particle for the thermal control material by using an ultrasonic high-temperature vibration scheme. More specifically, a Boron Nitride (BN) particle having a plate shape and an excellent thermal conductivity is coated on a PCM having a shape of a micro bead, to increase the thermal conduction to the inside PCM, so that a phase change is easily generated, and which allows an easy treatment of the PCM in a liquid state at a temperature equal to or higher than a melting point of the PCM.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: January 6, 2015
    Assignee: Hyundai Motor Company
    Inventors: Han Saem Lee, Do Suck Han, Jin Woo Kwak, Chi Hoon Choi, Kyong Hwa Song, Byung Sam Choi
  • Publication number: 20140339461
    Abstract: The present disclosure provides a high heat radiation composite material including a hybrid filler comprising expanded graphite filled with expandable polymeric beads, and a fabrication method thereof. In the method, a dispersion solution is prepared by dispersing expandable polymeric beads in ethanol. Expanded graphite is immersed in the dispersion solution, and heat-treated to remove ethanol, thereby producing the hybrid filler. The hybrid filler is dispersed into the matrix polymer via an extrusion/injection process, thereby producing the composite material.
    Type: Application
    Filed: August 1, 2014
    Publication date: November 20, 2014
    Inventors: Kyong Hwa Song, Han Saem Lee, Jin Woo Kwak, Byung Sam Choi
  • Patent number: 8829063
    Abstract: The present disclosure provides a high heat radiation composite material including a hybrid filler comprising expanded graphite filled with expandable polymeric beads, and a fabrication method thereof. In the method, a dispersion solution is prepared by dispersing expandable polymeric beads in ethanol. Expanded graphite is immersed in the dispersion solution, and heat-treated to remove ethanol, thereby producing the hybrid filler. The hybrid filler is dispersed into the matrix polymer via an extrusion/injection process, thereby producing the composite material.
    Type: Grant
    Filed: July 3, 2012
    Date of Patent: September 9, 2014
    Assignee: Hyundai Motor Company
    Inventors: Kyong Hwa Song, Han Saem Lee, Jin Woo Kwak, Byung Sam Choi
  • Publication number: 20130299732
    Abstract: Disclosed is a hybrid filler for an electromagnetic shielding composite material and a method of manufacturing the hybrid filler, by which electromagnetic shielding and absorbing capabilities are improved and heat generated by electromagnetic absorption is effectively removed. The hybrid filler for an electromagnetic shielding composite material includes an expandable graphite (EG) having a plurality of pores, and magnetic particles integrated with a carbon nanotube (CNT) on outer surfaces thereof in a mixed manner, wherein the magnetic particles are inserted into the pores of the EG.
    Type: Application
    Filed: July 24, 2012
    Publication date: November 14, 2013
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Jin Woo Kwak, Kyong Hwa Song, Han Saem Lee, Byung Sam Choi
  • Publication number: 20130277439
    Abstract: Disclosed is a housing for electronic/electrical that includes an inner panel and an outer panel, a strip of metal plate, and a strip of shape memory material. The inner panel and the outer panel are disposed parallel to each other at regular intervals to define an internal space. The strip of metal plate extends from an inner surface of the outer panel. The strip of shape memory material extends from an inner surface of the inner panel and is attached or detached to/from the metal plate on the outer panel while changing into an original straight shape or a bent shape according to a temperature variation. Here, when the temperature increase beyond a first transition temperature, the shape memory material straightens to form a heat transfer path. At a low temperature environment, the shape memory material bends and is separated from the metal plate to interrupt the heat transfer path.
    Type: Application
    Filed: August 23, 2012
    Publication date: October 24, 2013
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Jin Woo Kwak, Kyong Hwa Song, Byung Sam Choi, Han Saem Lee
  • Publication number: 20130266837
    Abstract: Disclosed is a heat radiation plate for a battery module, which can effectively radiate heat accumulated in a battery module, and the battery module having the heat radiation plate. To this end, the heat radiation plate is inserted in an interlayer manner between battery cells. The heat radiation plate includes high-polymer matrix layers and a filler layer inserted in an interlayer manner between the high-polymer matrix layers, in which the filler layer is made of a conductive fiber having a three-dimensional (3D) web structure.
    Type: Application
    Filed: July 11, 2012
    Publication date: October 10, 2013
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Han Saem Lee, Kyong Hwa Song, Jin Woo Kwak, Byung Sam Choi
  • Publication number: 20130264511
    Abstract: Disclosed is a composite material for shielding broadband electromagnetic waves and a method for its production. More particularly, a composite material for shielding broadband electromagnetic waves that absorbs low frequency electromagnetic waves and reflects high frequency electromagnetic waves is disclosed. The composite material for shielding broadband electromagnetic waves may be a polymer composite prepared by mixing a matrix composition including a matrix-forming polymer impregnated with a carbonaceous conductive nano material with a filler composite including a filler-forming polymer impregnated with a magnetic material. The magnetic material impregnated in the filler-forming polymer may be distributed in the matrix composite.
    Type: Application
    Filed: July 13, 2012
    Publication date: October 10, 2013
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Byung Sam Choi, Kyong Hwa Song, Han Saem Lee, Jin Woo Kwak
  • Publication number: 20130252040
    Abstract: The present invention provides a heat control plate and a battery cell module having the same. The heat control plate is used as an interfacial component interposed between battery cells. The heat control plate includes a planar composite sheet, a plurality of heat radiating ribbons, a planar heating layer, and a conductive strap. The plurality of heat radiating ribbons penetrate the composite sheet and protrude from both right and left sides of the composite sheet at both ends thereof. The planar heating layer is attached to one or both of upper and lower surfaces of the composite sheet and generates heat upon application of a voltage. The conductive strap applies a supply voltage to the planar heating layer. The planar composite sheet can have a high thermal conductivity. The planar composite sheet can have a thermal conductivity greater than about 3 W/mK.
    Type: Application
    Filed: July 2, 2012
    Publication date: September 26, 2013
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Jin Woo Kwak, Kyong Hwa Song, Han Saem Lee, Young Joon Chang, Byung Sam Choi
  • Publication number: 20130244078
    Abstract: Disclosed is a radiating apparatus for a battery cell which uses an interface plate which can effectively radiate heat accumulated in the battery. In particular, an aluminum-elastomer structure composite material with excellent thermal conductivity is used as the interface plate. Further, the radiating apparatus includes an outer case having cooling channels, through which cooling air passes to discharge heat generated from a battery cell, and a battery cell and an interface plate which are provided within the outer case and which are alternately stacked to make surface-contact with each other. The interface plate advantageously discharges the heat accumulated in the battery cell using aluminum-elastomer structure composite material.
    Type: Application
    Filed: July 3, 2012
    Publication date: September 19, 2013
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Jin Woo Kwak, Kyong Hwa Song, Han Saem Lee, You Sung Moon, Byung Sam Choi
  • Publication number: 20130240261
    Abstract: The present disclosure provides a composite material for shielding an electromagnetic wave, and more particularly, a composite material for shielding an electromagnetic wave, which can effectively shield an electromagnetic wave generated in an electronic component. The composite material of the disclosure has a multi-layer structure including: an electromagnetic wave-shielding layer for shielding an electromagnetic wave; and a thermally conductive layer stacked under the electromagnetic wave-shielding layer for dissipating heat generated when the electromagnetic wave is absorbed, wherein the electromagnetic wave-shielding layer includes a material including a magnetic material and a carbon-based conductive material added to a thermoplastic resin.
    Type: Application
    Filed: May 25, 2012
    Publication date: September 19, 2013
    Applicant: HYUNDAI MOTOR COMPANY
    Inventors: Kyong Hwa Song, Han Saem Lee, Jin Woo Kwak, Byung Sam Choi