Patents by Inventor Joon Hyun CHANG

Joon Hyun CHANG 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).

  • Apparatus for preparing cathode active material precursor for lithium secondary batteries and method for preparing the same using the apparatus
    Patent number: 9776886
    Abstract: Provided are an apparatus for preparing a cathode active material precursor for lithium secondary batteries including a cylindrical outer chamber, an inner cylinder that has the same central axis as the outer chamber and is mounted to rotatably move along the central axis, an electric motor to transfer power to rotate the inner cylinder, a reactant inlet disposed on the outer chamber, to add reactants to a space between the outer chamber and the inner cylinder, and an outlet disposed in the outer chamber, to obtain reaction products after reaction in the space between the outer chamber and the inner cylinder, and a method for preparing a cathode active material precursor for lithium secondary batteries using the apparatus.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: October 3, 2017
    Assignees: LG CHEM, LTD, UNIVERSITY-INDUSTRY COOPERATION GROUP OF KYUNG HEE UNIVERSITY
    Inventors: ByungChun Park, Woosik Kim, HoSuk Shin, Soonho Ahn, Hong Kyu Park, Joon Hyun Chang
  • APPARATUS FOR PREPARING CATHODE ACTIVE MATERIAL PRECURSOR FOR LITHIUM SECONDARY BATTERIES AND METHOD FOR PREPARING THE SAME USING THE APPARATUS
    Publication number: 20150225255
    Abstract: Provided are an apparatus for preparing a cathode active material precursor for lithium secondary batteries including a cylindrical outer chamber, an inner cylinder that has the same central axis as the outer chamber and is mounted to rotatably move along the central axis, an electric motor to transfer power to rotate the inner cylinder, a reactant inlet disposed on the outer chamber, to add reactants to a space between the outer chamber and the inner cylinder, and an outlet disposed in the outer chamber, to obtain reaction products after reaction in the space between the outer chamber and the inner cylinder, and a method for preparing a cathode active material precursor for lithium secondary batteries using the apparatus.
    Type: Application
    Filed: April 21, 2015
    Publication date: August 13, 2015
    Applicants: LG CHEM, LTD., University-Industry Cooperation Group of Kyung Hee University
    Inventors: ByungChun PARK, Woosik KIM, HoSuk SHIN, Soonho AHN, Hong Kyu PARK, Joon Hyun CHANG
  • APPARATUS FOR PREPARING CATHODE ACTIVE MATERIAL PRECURSOR FOR LITHIUM SECONDARY BATTERIES AND METHOD FOR PREPARING THE SAME USING THE APPARATUS
    Publication number: 20140065058
    Abstract: Provided are an apparatus for preparing a cathode active material precursor for lithium secondary batteries including a cylindrical outer chamber, an inner cylinder that has the same central axis as the outer chamber and is mounted to rotatably move along the central axis, an electric motor to transfer power to rotate the inner cylinder, a reactant inlet disposed on the outer chamber, to add reactants to a space between the outer chamber and the inner cylinder, and an outlet disposed in the outer chamber, to obtain reaction products after reaction in the space between the outer chamber and the inner cylinder, and a method for preparing a cathode active material precursor for lithium secondary batteries using the apparatus.
    Type: Application
    Filed: September 6, 2012
    Publication date: March 6, 2014
    Applicants: University-Industry Cooperation Group of Kyung Hee University, LG CHEM, LTD.
    Inventors: ByungChun PARK, Woosik KIM, HoSuk SHIN, Soonho AHN, Hong Kyu PARK, Joon Hyun CHANG