Patents by Inventor Chang-Heon Kim

Chang-Heon 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: 10468547
    Abstract: Disclosed are a silicon wafer having a complex structure, a method of fabricating the same, and a solar cell using the same, wherein the silicon wafer is configured such that an oriented silicon wafer has a pyramid pattern formed through wet etching and additionally has nanowires formed in the direction in which silicon crystals are oriented on the pyramid pattern, and is further doped with POCl3.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: November 5, 2019
    Assignee: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Chae Hwan Jeong, Jong Hwan Lee, Ho Sung Kim, Chang Heon Kim
  • Patent number: 9972732
    Abstract: One embodiment of the present invention relates to a method for manufacturing solar cells having a nano-micro composite structure on a silicon substrate and solar cells manufactured thereby. The technical problem to be solved is to provide a method for manufacturing solar cells and solar cells manufactured thereby, the method being capable of forming micro wires in various sizes according to the lithographic design of a photoresist and forming nano wires, which have various sizes and aspect ratios, by adjusting the concentration of a wet etching solution and immersion time.
    Type: Grant
    Filed: December 2, 2016
    Date of Patent: May 15, 2018
    Assignee: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Chae Hwan Jeong, Jong Hwan Lee, Chang Heon Kim, Ho Sung Kim
  • Publication number: 20170084765
    Abstract: One embodiment of the present invention relates to a method for manufacturing solar cells having a nano-micro composite structure on a silicon substrate and solar cells manufactured thereby. The technical problem to be solved is to provide a method for manufacturing solar cells and solar cells manufactured thereby, the method being capable of forming micro wires in various sizes according to the lithographic design of a photoresist and forming nano wires, which have various sizes and aspect ratios, by adjusting the concentration of a wet etching solution and immersion time.
    Type: Application
    Filed: December 2, 2016
    Publication date: March 23, 2017
    Inventors: Chae Hwan Jeong, Jong Hwan Lee, Chang Heon Kim, Ho Sung Kim
  • Patent number: 9530914
    Abstract: One embodiment of the present invention relates to a method for manufacturing solar cells having a nano-micro composite structure on a silicon substrate and solar cells manufactured thereby. The technical problem to be solved is to provide a method for manufacturing solar cells and solar cells manufactured thereby, the method being capable of forming micro wires in various sizes according to the lithographic design of a photoresist and forming nano wires, which have various sizes and aspect ratios, by adjusting the concentration of a wet etching solution and immersion time.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: December 27, 2016
    Assignee: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Chae Hwan Jeong, Jong Hwan Lee, Chang Heon Kim, Ho Sung Kim
  • Publication number: 20160181455
    Abstract: Disclosed are a silicon wafer having a complex structure, a method of fabricating the same, and a solar cell using the same, wherein the silicon wafer is configured such that an oriented silicon wafer has a pyramid pattern formed through wet etching and additionally has nanowires formed in the direction in which silicon crystals are oriented on the pyramid pattern, and is further doped with POCl3.
    Type: Application
    Filed: December 20, 2013
    Publication date: June 23, 2016
    Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Chae Hwan JEONG, Jong Hwan LEE, Ho Sung KIM, Chang Heon KIM
  • Patent number: 9235351
    Abstract: An optical disc drive, and a method of driving the optical disc drive are provided. Where the optical disc drive has a connectivity or a compatibility with a host that is incompatible with the optical disc drive, a file system and device information accepted by the host are provided. The host may have a compatibility with limited external medium devices and a specific command set for data exchange. The optical disc drive and the method of driving the optical disc drive may transmit compatible information to the host and select the specific command set accepted by the host, so that the optical disc drive is compatible with the host.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: January 12, 2016
    Assignee: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Soon-gyu Jeong, Dong-hwan Lim, Hyung-kyoon Kim, Dong-jin Lee, Chang-heon Kim, Won Kim
  • Publication number: 20150270425
    Abstract: One embodiment of the present invention relates to a method for manufacturing solar cells having a nano-micro composite structure on a silicon substrate and solar cells manufactured thereby. The technical problem to be solved is to provide a method for manufacturing solar cells and solar cells manufactured thereby, the method being capable of forming micro wires in various sizes according to the lithographic design of a photoresist and forming nano wires, which have various sizes and aspect ratios, by adjusting the concentration of a wet etching solution and immersion time.
    Type: Application
    Filed: December 18, 2012
    Publication date: September 24, 2015
    Inventors: Chae Hwan Jeong, Jong Hwan Lee, Chang Heon Kim, Ho Sung Kim
  • Patent number: 8936940
    Abstract: The present invention relates to a method of producing secondary metabolites with a high yield using plant cell culture, and a medium for the production of secondary metabolites. More specifically, the method of the present invention is characterized in that the plant cell culture is conducted by adding a saccharide mixture to the culture medium as a carbon source, to increase the productivity of the secondary metabolites. For example, the present invention establishes the method of increasing the productivity of secondary metabolites and shortening the culture time by the use of the mixture of glucose and fructose in the plant cell culture, thereby contributing in producing useful secondary metabolites on an industrial scale using plant cell culture.
    Type: Grant
    Filed: June 2, 2006
    Date of Patent: January 20, 2015
    Assignee: Samyang Biopharmaceuticals Corporation
    Inventors: Jin-Ah Kim, Chang-Heon Kim, Jai-Young Song, Ho-Joon Choi
  • Patent number: 8101411
    Abstract: The present invention relates to a method of producing corosolic acid by using plant cells that produce corosolic acid. More particularly, the present invention relates to a method of producing corosolic acid by using plant cell suspension cultures comprising the steps of: inducing a callus from a tissue of a plant producing corosolic acid; preparing a cell line capable of being cultured in liquid culture medium from the induced callus; culturing the cell line in a suspension culture; and isolating corosolic acid from the culture solution. The present invention has advantage of maximizing productivity by utilizing two-stage culture, treatment with inducing agent, and high cell-density culture in the suspension culture of plant cells producing corosolic acid.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: January 24, 2012
    Assignee: Samyang Genex Corporation
    Inventors: Chang-Heon Kim, Jin-Ah Kim, Jai-Young Song, Ho-Joon Choi
  • Publication number: 20100329089
    Abstract: An optical disc drive, and a method of driving the optical disc drive are provided. Where the optical disc drive has a connectivity or a compatibility with a host that is incompatible with the optical disc drive, a file system and device information accepted by the host are provided. The host may have a compatibility with limited external medium devices and a specific command set for data exchange. The optical disc drive and the method of driving the optical disc drive may transmit compatible information to the host and select the specific command set accepted by the host, so that the optical disc drive is compatible with the host.
    Type: Application
    Filed: June 24, 2010
    Publication date: December 30, 2010
    Applicant: Toshiba Samsung Storage Technology Korea Corporation
    Inventors: Soon-gyu Jeong, Dong-hwan Lim, Hyung-kyoon Kim, Dong-jin Lee, Chang-heon Kim, Won Kim
  • Publication number: 20100159545
    Abstract: The present invention relates to a method of producing corosolic acid by using plant cells that produce corosolic acid. More particularly, the present invention relates to a method of producing corosolic acid by using plant cell suspension cultures comprising the steps of: inducing a callus from a tissue of a plant producing corosolic acid; preparing a cell line capable of being cultured in liquid culture medium from the induced callus; culturing the cell line in a suspension culture; and isolating corosolic acid from the culture solution. The present invention has advantage of maximizing productivity by utilizing two-stage culture, treatment with inducing agent, and high cell-density culture in the suspension culture of plant cells producing corosolic acid.
    Type: Application
    Filed: June 30, 2006
    Publication date: June 24, 2010
    Applicant: SAMYANG GENEX CORPORATION
    Inventors: Chang-Heon Kim, Jin-An Kim, Jai-Young Song, Ho-Joon Choi
  • Publication number: 20090317877
    Abstract: The present invention relates to a method of producing secondary metabolites with a high yield using plant cell culture, and a medium for the production of secondary metabolites. More specifically, the method of the present invention is characterized in that the plant cell culture is conducted by adding a saccharide mixture to the culture medium as a carbon source, to increase the productivity of the secondary metabolites. For example, the present invention establishes the method of increasing the productivity of secondary metabolites and shortening the culture time by the use of the mixture of glucose and fructose in the plant cell culture, thereby contributing in producing useful secondary metabolites on an industrial scale using plant cell culture.
    Type: Application
    Filed: June 2, 2006
    Publication date: December 24, 2009
    Inventors: Jin-Ah Kim, Chang-Heon Kim, Jai-Young Song, Ho-Joon Choi