Patents by Inventor Je Wun LEE

Je Wun LEE 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).

  • Cinchona-based bifucntional organocatalysts and method for preparing chiral hemiesters using the same
    Patent number: 8580964
    Abstract: The present invention relates to cinchona-based bifunctional organocatalysts and methods for preparing chiral hemiesters using the same. More specifically, the present invention relates to methods for preparing chiral hemiesters from prochiral or meso cyclic acid anhydrides via desymmetrization, using bifunctional cinchona alkaloid catalysts comprising sulfonamide functional groups.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: November 12, 2013
    Assignee: Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Choong Eui Song, Sang Ho Oh, Ho Sik Rho, Ji Woong Lee, Je Wun Lee, Sung Hoon Youk, Jik Chin
  • CINCHONA-BASED BIFUNCTIONAL ORGANOCATALYSTS AND METHOD FOR PREPARING CHIRAL HEMIESTERS USING THE SAME
    Publication number: 20110213151
    Abstract: The present invention relates to cinchona-based bifunctional organocatalysts and methods for preparing chiral hemiesters using the same. More specifically, the present invention relates to methods for preparing chiral hemiesters from prochiral or meso cyclic acid anhydrides via desymmetrization, using bifunctional cinchona alkaloid catalysts comprising sulfonamide functional groups.
    Type: Application
    Filed: January 18, 2011
    Publication date: September 1, 2011
    Applicant: SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION
    Inventors: Choong Eui SONG, Sang Ho OH, Ho Sik RHO, Ji Woong LEE, Je Wun LEE, Sung Hoon YOUK, Jik CHIN