Patents by Inventor Kyoung Ran Han

Kyoung Ran Han 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).

  • Methods of producing anodes for solid oxide fuel cells
    Patent number: 8877118
    Abstract: Disclosed are methods of producing Ni/YSZ porous anode bodies for solid oxide fuel cells. According to the methods, a small amount of a nickel compound or salt is used as a pore former. Upon heating in air, the nickel compound or salt is decomposed into nickel oxide and releases gases, resulting in volume shrinkage. Therefore, Ni/YSZ porous bodies having a uniform pore size and reduction products thereof can be produced in an economical manner.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: November 4, 2014
    Assignee: Korea Institute of Science and Technology
    Inventors: Chang-Sam Kim, Kyoung Ran Han, Sang Whan Park, Sung Woon Jeon
  • Cement-free high strength unshaped refractory
    Patent number: 8815759
    Abstract: Disclosed is a cement-free high strength unshaped refractory in which barium aluminate and a dispersant are further added to a refractory which includes a refractory material containing Al2O3 and SiC and an alumina sol binder to largely improve handling strength of the unshaped refractory. The unshaped refractory according to the present invention is usefully applicable to lining which contacts slag in a blast furnace or a gasifier.
    Type: Grant
    Filed: November 12, 2012
    Date of Patent: August 26, 2014
    Assignee: Korea Institute of Science and Technology
    Inventors: Kyoung Ran Han, Sang Whan Park, Chang Sam Kim
  • CEMENT-FREE HIGH STRENGTH UNSHAPED REFRACTORY
    Publication number: 20130260982
    Abstract: Disclosed is a cement-free high strength unshaped refractory in which barium aluminate and a dispersant are further added to a refractory which includes a refractory material containing Al2O3 and SiC and an alumina sol binder to largely improve handling strength of the unshaped refractory. The unshaped refractory according to the present invention is usefully applicable to lining which contacts slag in a blast furnace or a gasifier.
    Type: Application
    Filed: November 12, 2012
    Publication date: October 3, 2013
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Kyoung Ran HAN, Sang Whan PARK, Chang Sam KIM
  • METHODS OF PRODUCING ANODES FOR SOLID OXIDE FUEL CELLS
    Publication number: 20130093128
    Abstract: Disclosed are methods of producing Ni/YSZ porous anode bodies for solid oxide fuel cells. According to the methods, a small amount of a nickel compound or salt is used as a pore former. Upon heating in air, the nickel compound or salt is decomposed into nickel oxide and releases gases, resulting in volume shrinkage. Therefore, Ni/YSZ porous bodies having a uniform pore size and reduction products thereof can be produced in an economical manner.
    Type: Application
    Filed: December 2, 2011
    Publication date: April 18, 2013
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Chang-Sam KIM, Kyoung Ran HAN, Sang Whan PARK, Sung Woon JEON
  • Process for coating ceramic powder with alumina by sol-gel process and improved densification
    Patent number: 5439851
    Abstract: The sol-gel process for forming dense alumina based cermics or dense ceramics with alumina as a sintering additive, the process comprising the steps of: preparing polymeric alumina sol by hydrolysis of Al (O--iBu)3 with a strong acid; preparing the ceramic dispersion in the alumina sol; gelling the dispersion; drying the gel dispersion to form a solid; calcining the solid; and sintering the calcined solid.
    Type: Grant
    Filed: November 13, 1992
    Date of Patent: August 8, 1995
    Assignee: Korea Institute of Science and Technology
    Inventor: Kyoung Ran Han