Patents by Inventor Yong Duk Kwak

Yong Duk Kwak 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).

  • Hair-care cosmetic compositions having dandruff formation-suppressing effect
    Patent number: 6054450
    Abstract: Disclosed herein is hair-care cosmetic compositions comprising iodopropynyl butylcarbamate and/or a solution of zinc pyrithione in N-acyl ethylenediamine triacetate.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: April 25, 2000
    Assignee: Pacific Corporation
    Inventors: Moon Sam Shin, Sang Cho Choi, Yong Duk Kwak, Seong Hwan Seo, Han Il Jeong, Kyung Hee Seo
  • Hair-care cosmetic compositions having dandruff formation-suppressing effect
    Patent number: 5886031
    Abstract: Disclosed herein is hair-care cosmetic compositions comprising iodopropynyl butylcarbamate and/or a solution of zinc pyrithione in N-acyl ethylenediamine triacetate.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: March 23, 1999
    Assignee: Pacific Corporation
    Inventors: Moon Sam Shin, Sang Cho Choi, Yong Duk Kwak, Seong Hwan Seo, Han Il Jeong, Kyung Hee Seo