Patents by Inventor Hyun Min Jung

Hyun Min Jung 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).

  • Publication number: 20050133798
    Abstract: A nitride semiconductor template having nano-voids at an interface between a substrate having one embossed surface and a nitride semiconductor layer can be rapidly prepared by hydride vapor phase epitaxy (HVPE) growth of the nitride semiconductor layer on the embossed surface of the substrate.
    Type: Application
    Filed: December 20, 2004
    Publication date: June 23, 2005
    Inventors: Hyun-Min Jung, Hae-Yong Lee, Hyun-Min Shin, Choon-Kon Kim, Chang-Ho Lee, Jeong-Wook Lee, Cheol-Soo Sone, Jae-Hee Cho
  • Patent number: 6753443
    Abstract: The present invention relates to a process for preparing a chiral ester according to the formula (100): by reacting (i) a racemic alcohol, (ii) a selected ruthenium complex to activate racemization of the racemic alcohol, (iii) a lipase to selectively acylate one enantiomer of the racemic alcohol, and (iv) an acyl donor compound to supply an acyl group to the lipase.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: June 22, 2004
    Assignees: Samsung Fine Chemicals Co., Ltd., Pohang University of Science and Technology
    Inventors: Jai Wook Park, Mahn-Joo Kim, Jeong Hwan Koh, Hyun Min Jung
  • Patent number: 6475773
    Abstract: The present invention relates to a method for preparing a chiral ester and more particularly, the method for preparing an optically pure chiral ester from an alkenyl ester at a high yield by mixing and reacting: an alkenyl ester; a ruthenium complex to activate reduction reaction of said alkenyl ester and racemization; a lipase to acylate selectively one of enantiomers of said alkenyl ester; and a reducing agent to supply a hydride to said ruthenium complex. Said optically pure chiral ester of the present invention can be prepared by one-step synthesis from various types of alkenyl esters at a high yield.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: November 5, 2002
    Assignee: Samsung Fine Chemicals Co., Ltd.
    Inventors: Jai Wook Park, Mahn-Joo Kim, Jeong Hwan Koh, Hyun Min Jung
  • Publication number: 20010012898
    Abstract: The present invention relates to a method for preparing a chiral ester and more particularly, the method for preparing an optically pure chiral ester from an alkenyl ester at a high yield by mixing and reacting:
    Type: Application
    Filed: December 1, 2000
    Publication date: August 9, 2001
    Inventors: Jai Wook Park, Mahn-Joo Kim, Jeong Hwan Koh, Hyun Min Jung
  • Patent number: 5932503
    Abstract: This invention relates to a glass composition for plasma display panel and more particularly, to a glass composition for plasma display panel having the following physical properties of glass without containing SrO in principle, i.e., strain point: 580.about.610.degree. C.; transition point: 610.degree. C. or more; thermal expansion coefficient: 80.about.87.times.10.sup.-7 /.degree.C.; working temperature equivalent to 10,000 poise: 1,200.degree. C. or less; liquidus temperature: 1,100.degree. C. or more; viscosity at liquidus temperature: 20,000 poise or more.
    Type: Grant
    Filed: December 5, 1997
    Date of Patent: August 3, 1999
    Assignee: Samsung Corning Co., Ltd.
    Inventors: Ki Dong Kim, Chan Jong Lee, Hyun Min Jung, Ki Chul Seo