Patents by Inventor Jihoon Rhee

Jihoon Rhee 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).

  • Alumina powder, alumina slurry, alumina-containing coating layer, multilayer separation membrane and secondary battery
    Patent number: 10763510
    Abstract: The present invention relates to: an alumina powder wherein a ratio (TBD/LBD) of a tapped bulk density (TBD) to a loose bulk density (LBD) is 1.5 or more; an alumina slurry containing the same; an alumina-containing coating layer; a multilayer separation membrane; and a secondary battery.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: September 1, 2020
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Jihoon Rhee, Taebong Kim, Suk Lee
  • ALUMINA POWDER, ALUMINA SLURRY, ALUMINA-CONTAINING COATING LAYER, MULTILAYER SEPARATION MEMBRANE AND SECONDARY BATTERY
    Publication number: 20190051906
    Abstract: The present invention relates to: an alumina powder wherein a ratio (TBD/LBD) of a tapped bulk density (TBD) to a loose bulk density (LBD) is 1.5 or more; an alumina slurry containing the same; an alumina-containing coating layer; a multilayer separation membrane; and a secondary battery.
    Type: Application
    Filed: September 6, 2017
    Publication date: February 14, 2019
    Applicant: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Jihoon RHEE, Taebong KIM, Suk LEE
  • Insulating film composition having improved mechanical property
    Patent number: 7229672
    Abstract: An insulating film forming composition having good mechanical and insulating properties comprises a silica sol having a good dispersion stability, an organic siloxane polymer and a hydrophobic organic solvent, wherein the silica sol has primary-particles having an average particle size of 5 to 15 nm and secondary-particles having an average particle size of 70 to 100 nm, and the combined amount of said primary and secondary silica particles is in the range of 2 to 50% by weight based on the sum of the silica particles and organic siloxane polymer.
    Type: Grant
    Filed: December 22, 2004
    Date of Patent: June 12, 2007
    Assignee: Samsung Corning Co., Ltd.
    Inventors: Taewan Kim, Jihoon Rhee, Daechul Park, Jongbaek Seon, Kwanghee Lee, Hyundam Jung
  • Insulating film composition having improved mechanical property
    Publication number: 20050159001
    Abstract: An insulating film forming composition having good mechanical and insulating properties comprises a silica sol having a good dispersion stability, an organic siloxane polymer and a hydrophobic organic solvent, wherein the silica sol has primary-particles having an average particle size of 5 to 15 nm and secondary-particles having an average particle size of 70 to 100 nm, and the combined amount of said primary and secondary silica particles is in the range of 2 to 50% by weight based on the sum of the silica particles and organic siloxane polymer.
    Type: Application
    Filed: December 22, 2004
    Publication date: July 21, 2005
    Inventors: Taewan Kim, Jihoon Rhee, Daechul Park, Jongbaek Seon, Kwanghee Lee, Hyundam Jung
  • Silica sol and process for preparing the same
    Publication number: 20050137268
    Abstract: A silica sol prepared by a specified method and present in the form of a dispersion in a specific hydrophobic organic solvent exhibits an excellent dispersion-stability and contains the silica particles having a minimal amount of adsorbed residual organic materials.
    Type: Application
    Filed: December 23, 2004
    Publication date: June 23, 2005
    Inventors: Taewan Kim, Jihoon Rhee, Daechul Park