Patents by Inventor Sang Hea Shim

Sang Hea Shim 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: 20230405524
    Abstract: The present disclosure relates to biocide compositions, formulations and methods for using formulations. In particular the present disclosure relates to biocide compositions and their use in treating reverse osmosis membranes.
    Type: Application
    Filed: August 21, 2023
    Publication date: December 21, 2023
    Inventors: Sang Hea SHIM, Chung Soo KIM
  • Publication number: 20230071077
    Abstract: The present disclosure relates to biocide compositions, formulations and methods for using formulations. In particular the present disclosure relates to biocide compositions and their use in effecting biocidal activity in subterranean oil and gas wells being drilled, completed, worked over or produced.
    Type: Application
    Filed: November 11, 2022
    Publication date: March 9, 2023
    Inventors: Sang Hea SHIM, Chung Soo KIM
  • Patent number: 11499089
    Abstract: The present disclosure relates to biocide compositions, formulations and methods for using formulations. In particular the present disclosure relates to biocide compositions and their use in effecting biocidal activity in subterranean oil and gas wells being drilled, completed, worked over or produced.
    Type: Grant
    Filed: July 12, 2021
    Date of Patent: November 15, 2022
    Assignees: JUSTEQ, LLC, ACCULAB, CO., LTD.
    Inventors: Sang Hea Shim, Chung Soo Kim
  • Publication number: 20210339195
    Abstract: The present disclosure relates to biocide compositions, formulations and methods for using formulations. In particular the present disclosure relates to biocide compositions and their use in treating reverse osmosis membranes.
    Type: Application
    Filed: May 10, 2021
    Publication date: November 4, 2021
    Inventors: Sang Hea SHIM, Chung Soo KIM
  • Publication number: 20210340430
    Abstract: The present disclosure relates to biocide compositions, formulations and methods for using formulations. In particular the present disclosure relates to biocide compositions and their use in effecting biocidal activity in subterranean oil and gas wells being drilled, completed, worked over or produced.
    Type: Application
    Filed: July 12, 2021
    Publication date: November 4, 2021
    Inventors: Sang Hea SHIM, Chung Soo KIM
  • Patent number: 11066595
    Abstract: The present disclosure relates to biocide compositions, formulations and methods for using formulations. In particular the present disclosure relates to biocide compositions and their use in effecting biocidal activity in subterranean oil and gas wells being drilled, completed, worked over or produced.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: July 20, 2021
    Assignees: JUSTEQ, LLC, ACCULAB CO., LTD.
    Inventors: Sang Hea Shim, Chung Soo Kim
  • Patent number: 11040309
    Abstract: The present disclosure relates to biocide compositions, formulations and methods for using formulations. In particular the present disclosure relates to biocide compositions and their use in treating reverse osmosis membranes.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: June 22, 2021
    Assignees: JUSTEQ, LLC, ACCULAB CO., LTD.
    Inventors: Sang Hea Shim, Chung Soo Kim
  • Publication number: 20190083933
    Abstract: The present disclosure relates to biocide compositions, formulations and methods for using formulations. In particular the present disclosure relates to biocide compositions and their use in treating reverse osmosis membranes.
    Type: Application
    Filed: June 9, 2016
    Publication date: March 21, 2019
    Inventors: Sang Hea SHIM, Chung Soo KIM
  • Publication number: 20190023975
    Abstract: The present disclosure relates to biocide compositions, formulations and methods for using formulations. In particular the present disclosure relates to biocide compositions and their use in effecting biocidal activity in subterranean oil and gas wells being drilled, completed, worked over or produced.
    Type: Application
    Filed: January 6, 2017
    Publication date: January 24, 2019
    Inventors: Sang Hea SHIM, Chung Soo KIM
  • Patent number: 7341671
    Abstract: Disclosed is a method of preparing a biocide having improved durability of its biocidal activity as well as disinfection efficiency at an initial stage, comprising the steps of: (a) preparing stabilized alkali or alkaline earth metal hypochlorite having a pH at least 11 by mixing a chlorine oxidant including alkali or alkaline earth metal hypochlorite with a stabilizer in an alkali solution; (b) preparing a bromide ion source; and (c) adding the bromide ion source prepared in step (b) into the stabilized alkali or alkaline earth metal hypochlorite prepared in step (a). Also, a method of controlling the growth of microorganisms using a biocide prepared by the method of the present invention is disclosed.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: March 11, 2008
    Assignee: Acculab Co., Ltd.
    Inventors: Sang-Hea Shim, Chung-Soo Kim
  • Publication number: 20050147528
    Abstract: Disclosed is a method of preparing a biocide having improved durability of its biocidal activity as well as disinfection efficiency at an initial stage, comprising the steps of: (a) preparing stabilized alkali or alkaline earth metal hypochlorite having a pH at least 11 by mixing a chlorine oxidant including alkali or alkaline earth metal hypochlorite with a stabilizer in an alkali solution; (b) preparing a bromide ion source; and (c) adding the bromide ion source prepared in step (b) into the stabilized alkali or alkaline earth metal hypochlorite prepared in step (a). Also, a method of controlling the growth of microorganisms using a biocide prepared by the method of the present invention is disclosed.
    Type: Application
    Filed: March 5, 2003
    Publication date: July 7, 2005
    Inventors: Sang-Hea Shim, Chung-Soo Kim
  • Patent number: 6533958
    Abstract: A method of controlling microbial fouling is provided. The method controls microbial fouling using hypobromous acid, HOBr, formed by the reaction between an aqueous solution of alkali or alkaline earth metal hypochlorite and a bromide ion source. The method is characterized in that the alkali or alkaline earth metal hypochlorite or/and the bromide ion source is/are stabilized by the addition of a stabilizer before the hypobromous acid is formed by the reaction there between.
    Type: Grant
    Filed: September 13, 2001
    Date of Patent: March 18, 2003
    Assignee: Acculab Co., Ltd.
    Inventors: Sang Hea Shim, Chung Soo Kim
  • Patent number: 6478972
    Abstract: A method of controlling microbial fouling is provided. The method controls microbial fouling using hypobromous acid, HOBr, formed by the reaction between an aqueous solution of alkali or alkaline earth metal hypochlorite and a bromide ion source. The method is characterized in that the alkali or alkaline earth metal hypochlorite or/and the bromide ion source is/are stabilized by the addition of a stabilizer before the hypobromous acid is formed by the reaction there between.
    Type: Grant
    Filed: June 28, 2000
    Date of Patent: November 12, 2002
    Assignee: Acculab Co., Ltd.
    Inventors: Sang Hea Shim, Chung Soo Kim
  • Publication number: 20020056689
    Abstract: A method of controlling microbial fouling is provided. The method controls microbial fouling using hypobromous acid, HOBr, formed by the reaction between an aqueous solution of alkali or alkaline earth metal hypochlorite and a bromide ion source.
    Type: Application
    Filed: September 13, 2001
    Publication date: May 16, 2002
    Applicant: Acculab Co., Ltd.
    Inventors: Sang Hea Shim, Chung Soo Kim
  • Patent number: 5589106
    Abstract: The prevention of corrosion on the surfaces of metallic pipes, heat exchangers, and the like which are in contact with industrial cooling waters, and particularly industrial cooling waters containing low levels of hardness is controlled utilizing a corrosion inhibiting amount of a composition including an alkali metal silicate, a hydroxycarboxylic acid or its water soluble salts, an organophosphonate, and a water soluble polymer which acts as a dispersant. Superior corrosion inhibition is achieved using the compositions of this invention as corrosion inhibitors, particularly in cooling water systems employing mild steel metallurgy.
    Type: Grant
    Filed: February 14, 1995
    Date of Patent: December 31, 1996
    Assignee: Nalco Chemical Company
    Inventors: Sang-Hea Shim, Dennis P. Bakalik, Donald A. Johnson, Bo Yang, Frank F. Lu