Patents by Inventor Jeong-Soo Yu

Jeong-Soo Yu 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).

  • PREPARATION METHOD OF N,N'-DIALKYL-3,3'-DITHIODIPROPIONAMIDE
    Publication number: 20120330061
    Abstract: This disclosure relates to a method for preparing N,N?-dimethyl-3,3?-dithiodipropionamides, which is an intermediate compound used for preparation of substituted 3-isothiazolones, including reacting 3,3?-dithiopropionic acid alkyl ester with an alkylamine at a temperature of from 0 to 50° C. in the presence of a polar solvent.
    Type: Application
    Filed: December 6, 2010
    Publication date: December 27, 2012
    Applicant: SK Chemicals Co., Ltd.
    Inventors: Jae-Min Ha, Jeong-Soo Yu, Tae-Woong Lee, Jeong-Joo Shin