Patents by Inventor Yun Soo Ahn

Yun Soo Ahn 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).

  • Enantiomerically pure binaphthol derivatives and method for preparing the same
    Patent number: 10059659
    Abstract: The present invention relates to compounds 1, 1a (S-enantiomer) and 1b (R-enantiomer) of the following formula 1, and a method for preparing the same. [formula 1] The novel compound of the formula 1 is used as an important intermediate for preparing compounds 6, 6a (S-enantiomer) and 6b (R-enantiomer) of the following formula 6, which are 2,2?-binaphthol-3-aldehyde derivatives. Also, the present invention provides a method for preparing the compound of formula 1 with a very safe method at low cost.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: August 28, 2018
    Assignee: AMINOLOGICS CO. LTD.
    Inventors: Rae Kyu Chang, Yun Soo Ahn, Heejung Jung, Hyerim Ga, Juwan Maeng, Young-Kook Koh, Young Hee Lee, Kwang Jae Lee, Joonseo Kim, Hyunil Lee, Heungsik Yoon
  • ENANTIOMERICALLY PURE BINAPHTHOL DERIVATIVES AND METHOD FOR PREPARING THE SAME
    Publication number: 20140012038
    Abstract: The present invention relates to compounds 1, 1a (S-enantiomer) and 1b (R-enantiomer) of the following formula 1, and a method for preparing the same. [formula 1] The novel compound of the formula 1 is used as an important intermediate for preparing compounds 6, 6a (S-enantiomer) and 6b (R-enantiomer) of the following formula 6, which are 2,2?-binaphthol-3-aldehyde derivatives. Also, the present invention provides a method for preparing the compound of formula 1 with a very safe method at low cost.
    Type: Application
    Filed: December 13, 2011
    Publication date: January 9, 2014
    Applicant: Aminologics Co., Ltd.
    Inventors: Rae Kyu Chang, Yun Soo Ahn, Heejung Jung, Hyerim Ga, Juwan Maeng, Young-Kook Koh, Young Hee Lee, Kwang Jae Lee, Joonseo Kim, Hyunil Lee