Patents by Inventor Chang Ha Lim

Chang Ha Lim 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: 11367865
    Abstract: Disclosed is a method of manufacturing a composite anode material for a lithium secondary battery containing nano-sized silicon and a carbonaceous material through a single process, the method including mixing a carbonaceous material and solid silicon and performing carbothermal shock for rapidly heating the carbonaceous material so that the solid silicon is melted using the heated carbonaceous material and is dispersed and attached in the form of particles to the surface of the carbonaceous material, the size of the silicon particles, which grow on the surface of the carbonaceous material, being adjusted during the carbothermal shock. Accordingly, processing costs can be lower than conventional methods of manufacturing silicon nanoparticles, and manufacturing costs can be further reduced by simultaneously performing formation of the silicon nanoparticles and compounding with the carbonaceous material.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: June 21, 2022
    Assignee: HPK INC.
    Inventors: Chang Hyun Cho, Chang Se Woo, Kap Seung Yang, Chang Ha Lim, Chung Hyung Joh
  • Patent number: 11268215
    Abstract: Provided is a method of producing a carbon fiber, the method including: a) adding an acrylonitrile-based polymer solution to a solution containing a glycol-based compound having a boiling point of 180 to 210° C. to precipitate an acrylonitrile-based polymer; b) melt spinning the acrylonitrile-based polymer to obtain a spun fiber; and c) performing stabilization and carbonization on the spun fiber to obtain a carbon fiber.
    Type: Grant
    Filed: April 10, 2020
    Date of Patent: March 8, 2022
    Assignee: HPK INC.
    Inventors: Chang Hyun Cho, Chang Se Woo, Kap Seung Yang, Chang Ha Lim, Sun Ho Choe, Hong Min Kim, Kyung Ae Oh, Eun Ji Kim
  • Publication number: 20200378034
    Abstract: Provided is a method of producing a carbon fiber, the method including: a) adding an acrylonitrile-based polymer solution to a solution containing a glycol-based compound having a boiling point of 180 to 210° C. to precipitate an acrylonitrile-based polymer; b) melt spinning the acrylonitrile-based polymer to obtain a spun fiber; and c) performing stabilization and carbonization on the spun fiber to obtain a carbon fiber.
    Type: Application
    Filed: April 10, 2020
    Publication date: December 3, 2020
    Inventors: Chang Hyun CHO, Chang Se WOO, Kap Seung YANG, Chang Ha LIM, Sun Ho CHOE, Hong Min KIM, Kyung Ae OH, Eun Ji KIM
  • Publication number: 20200321607
    Abstract: Disclosed is a method of manufacturing a composite anode material for a lithium secondary battery containing nano-sized silicon and a carbonaceous material through a single process, the method including mixing a carbonaceous material and solid silicon and performing carbothermal shock for rapidly heating the carbonaceous material so that the solid silicon is melted using the heated carbonaceous material and is dispersed and attached in the form of particles to the surface of the carbonaceous material, the size of the silicon particles, which grow on the surface of the carbonaceous material, being adjusted during the carbothermal shock. Accordingly, processing costs can be lower than conventional methods of manufacturing silicon nanoparticles, and manufacturing costs can be further reduced by simultaneously performing formation of the silicon nanoparticles and compounding with the carbonaceous material.
    Type: Application
    Filed: November 18, 2019
    Publication date: October 8, 2020
    Applicant: HPK INC.
    Inventors: Chang Hyun CHO, Chang Se WOO, Kap Seung YANG, Chang Ha LIM, Chung Hyung JOH
  • Patent number: 8696469
    Abstract: In embodiments of the present invention improved capabilities are described for a computer program product embodied in a computer readable medium that, when executing on one or more computers, receives a request for game play, and in response to the request, causing prior game play data to be retrieved, where the prior game play data was stored in response to prior game play of another user. Further, an asynchronous game play environment may be provided where an active participant, who made the request, is able to play against and interact with an apparently live participant based on the prior game play data.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: April 15, 2014
    Assignee: Tetris Online, Inc.
    Inventors: Eui-Joon Youm, Glyn C. Thomas, Chang-ha Lim
  • Patent number: 8430755
    Abstract: In embodiments of the present invention improved capabilities are described for serving a computer game, comprising: (a) providing two separate storage facilities accessible from a server, the first storage facility comprising fast response searchable memory for storage of recently produced game play data, and the second storage facility comprising a structured database for longer term storage of game play data, the first memory having a data search and data retrieval speed that is substantially faster than the second memory; (b) receiving, at the server, a game play request from a live gaming participant with a desired opponent attribute; (c) in response to the game play request, searching the first memory, based on the attribute, to identify prior game play data corresponding to an appropriate opponent; and (d) presenting a multi-player game environment where the live gaming participant can play against and have two-way interactions with an apparently live opponent.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: April 30, 2013
    Assignee: Tetris Online, Inc.
    Inventors: Eui-Joon Youm, Chang-ha Lim
  • Patent number: 8357045
    Abstract: In embodiments of the present invention improved capabilities are described for a computer program product embodied in a computer readable medium that, when executing on one or more computers, receives a request for game play, and in response to the request, causing prior game play data to be retrieved, where the prior game play data was stored in response to prior game play of another user. Further, an asynchronous game play environment may be provided where an active participant, who made the request, is able to play against and interact with an apparently live participant based on the prior game play data.
    Type: Grant
    Filed: December 15, 2009
    Date of Patent: January 22, 2013
    Assignee: Tetris Online, Inc.
    Inventors: Eui-Joon Youm, Glyn C. Thomas, Chang-ha Lim
  • Publication number: 20120064968
    Abstract: In embodiments of the present invention improved capabilities are described for serving a computer game, comprising: (a) providing two separate storage facilities accessible from a server, the first storage facility comprising fast response searchable memory for storage of recently produced game play data, and the second storage facility comprising a structured database for longer term storage of game play data, the first memory having a data search and data retrieval speed that is substantially faster than the second memory; (b) receiving, at the server, a game play request from a live gaming participant with a desired opponent attribute; (c) in response to the game play request, searching the first memory, based on the attribute, to identify prior game play data corresponding to an appropriate opponent; and (d) presenting a multi-player game environment where the live gaming participant can play against and have two-way interactions with an apparently live opponent.
    Type: Application
    Filed: January 24, 2011
    Publication date: March 15, 2012
    Inventors: Eui-Joon Youm, Chang-ha Lim
  • Publication number: 20110030577
    Abstract: A functional cotton spray composition includes: 100 parts by weight of cotton fibers having a length of 3 mm or less; 0.5 to 5 parts by weight of a phase change material; 0.5 to 1 parts by weight of a titanium dioxide photoactive catalyst; 0.5 to 2 parts by weight of at least one natural pigment selected from the group consisting of a pine needle powder, a green tea powder, a mugwort powder, an indigo plant powder, a gardenia powder, a charcoal powder and a yellow soil powder; 0.5 to 5 parts by weight of a dispersant; 5 to 20 parts by weight of a viscosity improver; 10 to 20 parts by weight of an organic flame retardant; 5 to 15 parts by weight of an inorganic flame retardant; 0.5 to 3 parts by weight of an antimicrobial and antifungal agent; and 300 to 600 parts by weight of viscosity-controlling water.
    Type: Application
    Filed: August 7, 2009
    Publication date: February 10, 2011
    Inventor: Chang Ha Lim
  • Patent number: 7879252
    Abstract: A functional cotton spray composition includes: 100 parts by weight of cotton fibers having a length of 3 mm or less; 0.5 to 5 parts by weight of a phase change material; 0.5 to 1 parts by weight of a titanium dioxide photoactive catalyst; 0.5 to 2 parts by weight of at least one natural pigment selected from the group consisting of a pine needle powder, a green tea powder, a mugwort powder, an indigo plant powder, a gardenia powder, a charcoal powder and a yellow soil powder; 0.5 to 5 parts by weight of a dispersant; 5 to 20 parts by weight of a viscosity improver; 10 to 20 parts by weight of an organic flame retardant; 5 to 15 parts by weight of an inorganic flame retardant; 0.5 to 3 parts by weight of an antimicrobial and antifungal agent; and 300 to 600 parts by weight of viscosity-controlling water.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: February 1, 2011
    Inventor: Chang Ha Lim
  • Publication number: 20100160038
    Abstract: In embodiments of the present invention improved capabilities are described for a computer program product embodied in a computer readable medium that, when executing on one or more computers, receives a request for game play, and in response to the request, causing prior game play data to be retrieved, where the prior game play data was stored in response to prior game play of another user. Further, an asynchronous game play environment may be provided where an active participant, who made the request, is able to play against and interact with an apparently live participant based on the prior game play data.
    Type: Application
    Filed: December 15, 2009
    Publication date: June 24, 2010
    Inventors: Eui-Joon Youm, Glyn C. Thomas, Chang-ha Lim