Patents by Inventor Hong-Sun Uh

Hong-Sun Uh 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).

  • Method for Preparing (S)-3-Hydroxy-Gamma-Butyrolactone Using Hydrolase
    Publication number: 20090104669
    Abstract: The present invention relates to a method for preparing S-HGB ((S)-3-hydroxy-?-butyrolactone) using hydrolase, and more particularly to a method for preparing S-HGB in a high purity by hydrolyzing S-BBL ((S)-?-benzoyloxy-?-butyrolactone) in the presence of hydrolase. According to the present invention, the S-HGB having an optical purity can be obtained in a high yield under simple process conditions without requiring reaction conditions of high pressure and high temperature or complex operating conditions by hydrolyzing S-BBL with hydrolase.
    Type: Application
    Filed: March 2, 2007
    Publication date: April 23, 2009
    Inventors: Oh-Jin Park, Sang-Hyun Lee, Sang-Who Lee, Goon-Ho Joe, Hong-Sun Uh
  • Ferrocenyldiphosphine-ruthenium complexes and a hydrogenation process of exocyclic double bond of d-thiophene to d-thiophane
    Patent number: 6515157
    Abstract: Ferrocenyldiphosphin-ruthenium complexes are new and good catalysts for the hydrogenation of exocyclic double bond of d-Thiophene 3 to d-Thiophane 4, both of which are intermediates of D-Biotin 1 synthesis. in which R signifies —OCH3(3a), —OCH2CH3(3b), —CH2COOH(3c), CH2COOCH3(3d) or —CH2COOEt(3e) and Bz signifies benzyl group.
    Type: Grant
    Filed: June 6, 2001
    Date of Patent: February 4, 2003
    Inventors: Hong-Sun Uh, Jeong-Ho Song, Myung-Jin Lee
  • Ferrocenyldiphospine-ruthenium complexes and a hydrogenation process of exocyclic double bond of d-thiophene to d-thiophane
    Publication number: 20020016475
    Abstract: Ferrocenyldiphosphin-ruthenium complexes are new and good catalysts for the hydrogenation of exocycilc double bond of d-Thiophene 3 to d-Thiophane 4, both of which are intermediates of D-Biotin 1 synthesis.
    Type: Application
    Filed: June 6, 2001
    Publication date: February 7, 2002
    Inventors: Hong-Sun Uh, Jeong-Ho Song, Myung-Jin Lee