Patents by Inventor Sung-Ruyl Kwon

Sung-Ruyl Kwon 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 of preparing cathode material for lithium ion cell
    Patent number: 5951919
    Abstract: Provided is a method of preparing a cathode material for lithium ion cell, which is designed to have the cycle characteristic enhanced and high initial discharge capacity, by synthesizing LiMn.sub.2 O.sub.4 powder having a stable spinel structure, vigorously agitating the powder in an aqueous solution of Li and Ni ions, dispersing the solution through a supersonic wave treatment, filtering it so as for the powder to adsorb the ions, and performing a heat treatment for doping the ions.
    Type: Grant
    Filed: April 8, 1998
    Date of Patent: September 14, 1999
    Assignee: Korea Kumho Petro Chemical Co., Ltd.
    Inventors: Kang-Seon Hwang, Dong-Hwan Kim, Sung-Ruyl Kwon