Patents by Inventor Dong Hyuk Nam

Dong Hyuk 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).

  • ACID ADDITION SALT OF INDENE DERIVATIVE PRODRUG AND METHOD FOR PREPARING SAME
    Publication number: 20230399298
    Abstract: The present invention relates to donepezil ether palmitate hydrochloride (DEP HCl) and a method for preparing same. Donepezil ether palmitate hydrochloride (DEP HCl) has been developed to have increased stability by suppressing generation of unknown related substances generated during a preparation process of a raw material and formulation of donepezil ether palmitate (DEP). In addition, the present invention relates to a sustained-release pharmaceutical composition comprising donepezil ether palmitate hydrochloride (DEP HCl) as a main ingredient. When administered in the body, the initial release of donepezil, which is an active ingredient, is reduced, thereby reducing the risk of side effects such as drug toxicity, and the constant release of donepezil in the body for a long period of time can improve the drug treatment effect on dementia patients.
    Type: Application
    Filed: October 27, 2021
    Publication date: December 14, 2023
    Inventors: Jaeeun Kim, Jaemin Lee, Dong Hyuk Nam, So Hyun Park, Sung Kwon Kang, Shin Jung Park
  • DONEPEZIL ETHER PALMITATE OR PHARMACEUTICALLY ACCEPTABLE SALT THEREOF
    Publication number: 20230303491
    Abstract: The present invention relates to novel donepezil ether palmitate or a pharmaceutically acceptable salt thereof; and a sustained-release pharmaceutical composition containing same as a main ingredient. Since an ether palmitate group is introduced to donepezil, the donepezil ether palmitate of the present invention reduces the initial release of donepezil, which is the active ingredient, when administered into the body, so as to reduce the risk of side effects such as drug toxicity, and allows donepezil to be uniformly released in the body over a long time to increase drug treatment effects for dementia patients.
    Type: Application
    Filed: June 24, 2021
    Publication date: September 28, 2023
    Inventors: Dong Hyuk Nam, Jaemin Lee, So Hyun Park, Sung Kwon Kang, Shin Jung Park
  • Method for the preparation of atorvastatin and intermediates used therein
    Patent number: 8178697
    Abstract: The present invention relates to a novel method for preparing atorvastatin. According to the present invention, provided are a novel intermediate of the preparation of atorvastatin and a method of preparing large amounts of atorvastatin in a safe manner using the intermediate.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: May 15, 2012
    Assignee: Chong Kun Dang Pharmaceutical Corp.
    Inventors: Soon Kil Ahn, Hong-Woo Lee, Choong Leol Yoo, Young-Min Kim, Chang Geun Song, Sung Kwun Kang, Jun A. You, Bong Kwan Soh, Dong Hyuk Nam
  • METHOD FOR THE PREPARATION OF ATORVASTATIN AND INTERMEDIATES USED THEREIN
    Publication number: 20110015407
    Abstract: The present invention relates to a novel method for preparing atorvastatin. According to the present invention, provided are a novel intermediate of the preparation of atorvastatin and a method of preparing large amounts of atorvastatin in a safe manner using the intermediate.
    Type: Application
    Filed: April 25, 2008
    Publication date: January 20, 2011
    Applicant: CHONG KUN DANG PHARMACEUTICAL CORP.
    Inventors: Soon Kil Ahn, Hong-Woo Lee, Choong Leol Yoo, Young-Min Kim, Chang Geun Song, Sung Kwun Kang, Jun A. You, Bong Kwan Soh, Dong Hyuk Nam