Patents by Inventor Jung Hyun HAN

Jung Hyun HAN 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: 20240303397
    Abstract: The present invention discloses a smoothed particle hydrodynamics (SPH)-based hyperelastic simulation method and apparatus. According to the invention, an SPH-based hyperelastic simulation apparatus includes a processor; and a memory connected to the processor, wherein the memory stores program instructions executed by the processor to define states of each of m particles in a discrete time as a set of positions and velocities, for an SPH-based deformable body composed of m particles, approximate hyperelastic energy of each of the m particles using a rest-pose volume, a material parameter, a vectorized deformation gradient, and a projection of the vectorized deformation gradient in order to optimize an objective function for solving new states of each of the m particles, search for an initial approximation of a Hessian matrix using the approximated hyperelastic energy, and simulate the SPH-based deformable body based on the searched initial approximation.
    Type: Application
    Filed: November 16, 2023
    Publication date: September 12, 2024
    Inventors: Jung Hyun HAN, Min Hyung KEE
  • Patent number: 11204150
    Abstract: The invention discloses an optical lens and a light emitting module having the same. The optical lens includes an incident surface around a recess in a center of the bottom surface; a light exit surface for emitting light incident; and a flange portion disposed between the light exit surface and a second edge of the bottom surface. A bottom of the recess has a width in a first axis direction that is greater than a width in a second axis direction orthogonal to the first axis direction. An outer diameter of the bottom surface has a length in the first axis direction that is smaller than a length in the second axis direction. The bottom surface includes a first rough region around the recess and second and third rough regions around the first rough region.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: December 21, 2021
    Assignee: YEJIA OPTICAL TECHNOLOGY (GUANGDONG) CORPORATION
    Inventor: Jung Hyun Han
  • Patent number: 10729912
    Abstract: An implantable photovoltaic device. The implantable photovoltaic device includes: at least two solar microcells configured to absorb sunlight; a thin film wire configured to connecting the at least two solar microcells to each other; a film configured to support the solar microcells; an upper encapsulation layer configured to encapsulate an upper side of the solar microcells and shield the solar microcells from the outside; and a lower encapsulation layer configured to encapsulate a lower side of the film and connect to the encapsulation layer. According to the idea of the present invention, it is possible to obtain a photovoltaic device which stably and harmlessly operates in a living body.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: August 4, 2020
    Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jongho Lee, Kwangsun Song, Yong Chul Kim, Jung Hyun Han
  • Publication number: 20180154158
    Abstract: An implantable photovoltaic device. The implantable photovoltaic device includes: at least two solar microcells configured to absorb sunlight; a thin film wire configured to connecting the at least two solar microcells to each other; a film configured to support the solar microcells; an upper encapsulation layer configured to encapsulate an upper side of the solar microcells and shield the solar microcells from the outside; and a lower encapsulation layer configured to encapsulate a lower side of the film and connect to the encapsulation layer. According to the idea of the present invention, it is possible to obtain a photovoltaic device which stably and harmlessly operates in a living body.
    Type: Application
    Filed: June 2, 2016
    Publication date: June 7, 2018
    Applicant: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jongho LEE, Kwangsun SONG, Yong Chul KIM, Jung Hyun HAN
  • Patent number: 9959670
    Abstract: The present invention relates to a method for rendering a multi-resolution terrain using GPU tessellation. A method for rendering a terrain using GPU tessellation according to an embodiment of the present invention may include: generating a quad patch to which an inner tessellation factor and an edge tessellation factor are allocated by using a quadtree including a parent node and child nodes; generating a base mesh b using the quad patch; and restoring a terrain by applying a displacement map to the base mesh.
    Type: Grant
    Filed: March 25, 2014
    Date of Patent: May 1, 2018
    Assignee: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Jung-Hyun Han, Hyeong Yeop Kang, Han Young Jang
  • Patent number: 9861568
    Abstract: The present disclosure provides a composition for improving skin condition comprising chlorophyll a or pheophorbide a as an active ingredient. According to the present disclosure, chlorophyll a or pheophorbide a exhibits an effect of improving skin wrinkles and inflammatory reaction due to ultraviolet lights. The composition of the present disclosure is characterized by oral administration and can be provided as a cosmetic composition, a pharmaceutical composition or a food composition.
    Type: Grant
    Filed: January 30, 2015
    Date of Patent: January 9, 2018
    Assignee: GWANGJU INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Yong Chul Kim, Jung Hyun Han, Hyun You, Min-Jeong Kim
  • Publication number: 20170189292
    Abstract: The present disclosure provides a composition for improving skin condition comprising chlorophyll a or pheophorbide a as an active ingredient. According to the present disclosure, chlorophyll a or pheophorbide a exhibits an effect of improving skin wrinkles and inflammatory reaction due to ultraviolet lights. The composition of the present disclosure is characterized by oral administration and can be provided as a cosmetic composition, a pharmaceutical composition or a food composition.
    Type: Application
    Filed: January 30, 2015
    Publication date: July 6, 2017
    Inventors: Yong Chul KIM, Jung Hyun HAN, Hyun YOU, Min-Jeong KIM
  • Publication number: 20170116780
    Abstract: The present invention relates to a method for rendering a multi-resolution terrain using GPU tessellation. A method for rendering a terrain using GPU tessellation according to an embodiment of the present invention may include: generating a quad patch to which an inner tessellation factor and an edge tessellation factor are allocated by using a quadtree including a parent node and child nodes; generating a base mesh b using the quad patch; and restoring a terrain by applying a displacement map to the base mesh.
    Type: Application
    Filed: March 25, 2014
    Publication date: April 27, 2017
    Inventors: Jung-Hyun HAN, Hyeong Yeop KANG, Han Young JANG
  • Patent number: 8785598
    Abstract: Provided are a coenzyme Q10 nanoparticle, a method of preparing the same and a composition having the nanoparticle. According to the present invention, Coenzyme Q10 may be dissolved in only a water-miscible organic solvent, and easily made into a nano-sized particle and solubilized under a low energy condition, for example, by simple stirring. The coenzyme Q10 may be dispersion-stabilized by an amino acid or protein. The coenzyme Q10 is formed in a nano-sized particle and solubilized, an absorption rate may be increased and simultaneously deliver the amino acid and protein with the nanoparticle. Thus, the coenzyme Q10 nanoparticle can be effectively used in food, cosmetics and medicine.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: July 22, 2014
    Assignee: Korea Research Institute of Bioscience and Biotechnology
    Inventors: Bong Hyun Chung, Jung Hyun Han
  • Patent number: 8758822
    Abstract: The present invention relates to a method for manufacturing uniform size polymeric nanoparticles containing poorly soluble drugs, and more particularly, to a method for manufacturing uniform size polymeric nanoparticles containing poorly soluble drugs, including a first step of dissolving a biodegradable polymer in a non-volatile polar organic solvent, a second step of adding poorly soluble drugs to water and the biodegradable polymer solution to produce a dispersion, and a third step of adding the dispersion to emulsifier solutions in a batch under the condition of low mechanical energy level stirring.
    Type: Grant
    Filed: April 30, 2009
    Date of Patent: June 24, 2014
    Assignee: Korea Research Institute of Bioscience and Biotechnology
    Inventors: Bong Hyun Chung, Yong Taik Lim, Jung Hyun Han
  • Patent number: 8734762
    Abstract: The present invention relates to a perfluorocarbon nanoemulsion containing quantum dot nanoparticles and a method for preparing the same, more specifically, relates to a method for preparing a multifunctional perfluorocarbon nanoemulsion which simultaneously shows the fluorine-based magnetic resonance properties of perfluorocarbon and the optical properties of quantum dot nanoparticles, the method comprising dispersing quantum dot nanoparticles, modified with a fluorine end group, in perfluorocarbon, and then adding an aqueous emulsifier solution containing lipid to the dispersion. The disclosed perfluorocarbon nanoemulsion containing quantum dot nanoparticles has excellent biocompatibility and simultaneously shows optical properties and magnetic resonance properties, and thus can be used as a contrast agent for multi-mode molecular imaging. Accordingly, the nanoemulsion can be used to study cell and small-animal molecular imaging in various fields, including biological and medical fields.
    Type: Grant
    Filed: August 20, 2008
    Date of Patent: May 27, 2014
    Assignee: Korea Research Institute of Bioscience and Biotechnology
    Inventors: Bong Hyun Chung, Yong Taik Lim, Bang Sil Choi, Jung Hyun Han
  • Patent number: 8593451
    Abstract: A method of generating a 3D complex octree map. A plurality of points each having 3D location information are detected from a range image. A space having the detected plurality of points is represented using grids. If points in a grid forms a plane, the grid is not subdivided and planar information about the plane is stored. A space not forming a plane is subdivided, thereby enhancing the storage efficiency.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: November 26, 2013
    Assignees: Samsung Electronics Co., Ltd., Korea University Research and Business Foundation
    Inventors: Yeon-Ho Kim, Joon-Kee Cho, Jung-Hyun Han, Yonh-hyun Jo
  • Publication number: 20120041178
    Abstract: Provided are a coenzyme Q10 nanoparticle, a method of preparing the same and a composition having the nanoparticle. According to the present invention, Coenzyme Q10 may be dissolved in only a water-miscible organic solvent, and easily made into a nano-sized particle and solubilized under a low energy condition, for example, by simple stirring. The coenzyme Q10 may be dispersion-stabilized by an amino acid or protein. The coenzyme Q10 is formed in a nano-sized particle and solubilized, an absorption rate may be increased and simultaneously deliver the amino acid and protein with the nanoparticle. Thus, the coenzyme Q10 nanoparticle can be effectively used in food, cosmetics and medicine.
    Type: Application
    Filed: April 6, 2010
    Publication date: February 16, 2012
    Applicant: Korea Research Institute of Bioscience and Biotechnology
    Inventors: Bong Hyun Chung, Jung Hyun Han
  • Publication number: 20110212032
    Abstract: The present invention relates to polymer particles showing magnetic properties and fluorescent properties simultaneously and a preparation method thereof More specifically, relates to polymer particles for near infrared (NIR)/magnetic resonance (MR) bimodal molecular imaging, contain a magnetic nanomaterial and an NIR fluorescent material, and a preparation method thereof The disclosed polymer particles show magnetic properties and fluorescent properties simultaneously, and thus are useful as contrast agents for NIR/MR bimodal molecular imaging.
    Type: Application
    Filed: August 20, 2008
    Publication date: September 1, 2011
    Applicant: Korea Research Institute of Bioscience and Biotechnology
    Inventors: Bong Hyun Chung, Yong Taik LIm, Jung Hyun Han
  • Publication number: 20110193859
    Abstract: A method of generating a 3D complex octree map. A plurality of points each having 3D location information are detected from a range image. A space having the detected plurality of points is represented using grids. If points in a grid forms a plane, the grid is not subdivided and planar information about the plane is stored. A space not forming a plane is subdivided, thereby enhancing the storage efficiency.
    Type: Application
    Filed: February 8, 2011
    Publication date: August 11, 2011
    Applicants: SAMSUNG ELECTRONICS CO., LTD, Korea University Research and Business Foundation
    Inventors: Yeon-Ho Kim, Joon-Kee Cho, Jung-Hyun Han, Yonh-hyun Jo
  • Publication number: 20110171269
    Abstract: The present invention relates to a method for manufacturing uniform size polymeric nanoparticles containing poorly soluble drugs, and more particularly, to a method for manufacturing uniform size polymeric nanoparticles containing poorly soluble drugs, including a first step of dissolving a biodegradable polymer in a non-volatile polar organic solvent, a second step of adding poorly soluble drugs to water and the biodegradable polymer solution to produce a dispersion, and a third step of adding the dispersion to emulsifier solutions in a batch under the condition of low mechanical energy level stirring.
    Type: Application
    Filed: April 30, 2009
    Publication date: July 14, 2011
    Applicant: KOREA RESEARCH INSTITUTE OF BIOSCIENCE AND BIOTECHNOLOGY
    Inventors: Bong Hyun Chung, Yong Taik Lim, Jung Hyun Han
  • Publication number: 20110020225
    Abstract: The present invention relates to porous polymer particles containing a charged molecule immobilized therein and a method for preparing the same. According to the disclosed invention, porous particles can be prepared using a biocompatible polymer and, at the same time, a charged molecule can be immobilized in the pores of the porous particles, such that various charged molecules can be loaded in the porous particles. In addition, various kinds of drugs or functional materials can be loaded into the porous particles of the present invention by electrostatic attraction and absorption or adsorption by a capillary phenomenon occurring due to porous properties.
    Type: Application
    Filed: August 5, 2008
    Publication date: January 27, 2011
    Applicant: KOREA RESEARCH INSTITUTE OF BIOSCIENCE AND BIOTECHNOLOGY
    Inventors: Bong Hyun Chung, Yong Taik Lim, Jung Hyun Han
  • Publication number: 20100233094
    Abstract: The present invention relates to a perfluorocarbon nanoemulsion containing quantum dot nanoparticles and a method for preparing the same, more specifically, relates to a method for preparing a multifunctional perfluorocarbon nanoemulsion which simultaneously shows the fluorine-based magnetic resonance properties of perfluorocarbon and the optical properties of quantum dot nanoparticles, the method comprising dispersing quantum dot nanoparticles, modified with a fluorine end group, in perfluorocarbon, and then adding an aqueous emulsifier solution containing lipid to the dispersion. The disclosed perfluorocarbon nanoemulsion containing quantum dot nanoparticles has excellent biocompatibility and simultaneously shows optical properties and magnetic resonance properties, and thus can be used as a contrast agent for multi-mode molecular imaging. Accordingly, the nanoemulsion can be used to study cell and small-animal molecular imaging in various fields, including biological and medical fields.
    Type: Application
    Filed: August 20, 2008
    Publication date: September 16, 2010
    Applicant: Korea Research Institute of Bioscience and Biotech
    Inventors: Bong Hyun Chung, Yong Taik Lim, Bang Sil Choi, Jung Hyun Han
  • Publication number: 20100053335
    Abstract: The present invention relates to a system for measuring image quality of moving pictures. The system comprises a transmitter, for transmitting encoded image data through a channel, and a receiver, for receiving the encoded image data and analyzing image information from the received image data to measure the image quality of moving pictures. The receiver includes a reception data input unit for receiving the encoded image data, a reception information analysis unit for analyzing a bitstream from the received image data in order to extract image information including loss or non-loss, a motion vector, and coordinates of each block, and an image quality measurement unit for applying a weight to each block by using the extracted image information and calculating the number of lost blocks reflecting weights to measure image quality.
    Type: Application
    Filed: February 6, 2009
    Publication date: March 4, 2010
    Applicant: SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION
    Inventors: Seung Seok HONG, Ji Tae SHIN, Yo Han KIM, Hyoung Won KWAK, Poong Up LEE, Duk Gu SUNG, Jung Hyun HAN, Beom Gon YU, Young Sang CHO