Patents by Inventor Keeyun LEE

Keeyun LEE 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).

  • Method for manufacturing coal-based geopolymer foam including silica fume
    Patent number: 11939262
    Abstract: Disclosed herein are a lightweight geopolymer foam with low thermal conductivity and a manufacturing method therefor in which coal bottom ash and fly ash are used together as materials for the geopolymer foam and silica fume is added to a mixed solution of an alkali activator and sodium hydroxide. The geopolymer foam can be utilized for improving insulation performance and safety for a structure constructed with eco-friendly cement.
    Type: Grant
    Filed: March 25, 2021
    Date of Patent: March 26, 2024
    Assignee: HEUNGKUK IND.CO., LTD.
    Inventors: Keeyun Lee, Hyo Kim, Jihoi Heo
  • METHOD FOR MANUFACTURING COAL-BASED GEOPOLYMER FOAM INCLUDING SILICA FUME
    Publication number: 20230202923
    Abstract: Disclosed herein are a lightweight geopolymer foam with low thermal conductivity and a manufacturing method therefor in which coal bottom ash and fly ash are used together as materials for the geopolymer foam and silica fume is added to a mixed solution of an alkali activator and sodium hydroxide. The geopolymer foam can be utilized for improving insulation performance and safety for a structure constructed with eco-friendly cement.
    Type: Application
    Filed: March 25, 2021
    Publication date: June 29, 2023
    Applicant: HEUNGKUK IND.CO.,LTD.
    Inventors: Keeyun LEE, Hyo KIM, Jihoi HEO
  • Game service method and system
    Patent number: 10086294
    Abstract: Provided is a game service method and system. The game service method may include providing a game service to terminals of game users over a network; setting rankings of the game users based on progress results of the game service; storing and managing a game log of a previous game played by a first game user of a predetermined ranking or greater in association with the first game user; and providing a replay service to replay the previous game played by the first game user on a terminal of a second game user based on the game log stored in association with the first game user, in response to a request from the terminal of the second game user.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: October 2, 2018
    Assignees: NHN Entertainment Corporation, NHN Studio629 Corporation
    Inventor: Keeyun Lee
  • GAME SERVICE METHOD AND SYSTEM
    Publication number: 20150328543
    Abstract: Provided is a game service method and system. The game service method may include providing a game service to terminals of game users over a network; setting rankings of the game users based on progress results of the game service; storing and managing a game log of a previous game played by a first game user of a predetermined ranking or greater in association with the first game user; and providing a replay service to replay the previous game played by the first game user on a terminal of a second game user based on the game log stored in association with the first game user, in response to a request from the terminal of the second game user.
    Type: Application
    Filed: May 18, 2015
    Publication date: November 19, 2015
    Inventor: Keeyun LEE