Patents by Inventor Kyung-Don NAM

Kyung-Don NAM 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).

  • Pearlescent pigment for security purposes including organic or inorganic fluorescent material
    Patent number: 11407900
    Abstract: A pearlescent pigment for security purposes according to an embodiment of the present invention includes a single or a plurality of coating layers containing a metal oxide and an organic or inorganic fluorescent material. Since the pearlescent pigment for security purposes according to the present disclosure includes a fluorescent layer containing the organic or inorganic fluorescent material, it can be used as a pigment for security purposes due to its optical characteristics and can also provide effects such as magnetism, high color intensity, multiple colors, etc. Also, since the pearlescent pigment for security purposes has aesthetic benefit and security characteristic at the same time, it is economical, easy to use and applicable in various industries.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: August 9, 2022
    Assignee: CQV CO., LTD.
    Inventors: Kum-sung Cho, Kyung-don Nam, Jae-il Jeong, Kwang-choong Kang, Byung-ki Choi, Kwang-soo Lim, Kil-wan Chang
  • PEARLESCENT PIGMENT FOR SECURITY PURPOSES INCLUDING ORGANIC OR INORGANIC FLUORESCENT MATERIAL
    Publication number: 20200354579
    Abstract: A pearlescent pigment for security purposes according to an embodiment of the present invention includes a single or a plurality of coating layers containing a metal oxide and an organic or inorganic fluorescent material. Since the pearlescent pigment for security purposes according to the present disclosure includes a fluorescent layer containing the organic or inorganic fluorescent material, it can be used as a pigment for security purposes due to its optical characteristics and can also provide effects such as magnetism, high color intensity, multiple colors, etc. Also, since the pearlescent pigment for security purposes has aesthetic benefit and security characteristic at the same time, it is economical, easy to use and applicable in various industries.
    Type: Application
    Filed: September 19, 2018
    Publication date: November 12, 2020
    Inventors: Kum-sung CHO, Kyung-don NAM, Jae-il JEONG, Kwang-choong KANG, Byung-ki CHOI, Kwang-soo LIM, Kil-wan CHANG
  • Plate-like aluminum oxide and preparation method therefor
    Patent number: 9758677
    Abstract: The present invention relates to flaky aluminum oxide and a preparation method thereof, and more particularly, to a flaky aluminum oxide which is suitably used as a substrate for a pearlescent pigment or the like, and to a preparation method thereof.
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: September 12, 2017
    Assignee: CQV CO., LTD.
    Inventors: Kwang-Choong Kang, Kyung-Don Nam, Yong-Ho Son, Myung-Ho Jung, Byung-Ki Choi, Kwang-Soo Lim, Kil-Wan Chang
  • PLATE-LIKE ALUMINUM OXIDE AND PREPARATION METHOD THEREFOR
    Publication number: 20170088712
    Abstract: The present invention relates to flaky aluminum oxide and a preparation method thereof, and more particularly, to a flaky aluminum oxide which is suitably used as a substrate for a pearlescent pigment or the like, and to a preparation method thereof.
    Type: Application
    Filed: March 17, 2015
    Publication date: March 30, 2017
    Inventors: Kwang-Choong KANG, Kyung-Don NAM, Yong-Ho SON, Myung-Ho JUNG, Byung-Ki CHOI, Kwang-Soo LIM, Kil-Wan CHANG