Patents Assigned to LG Chem-Investment Ltd.
  • Patent number: 7223412
    Abstract: The present invention relates to a method of producing recombinant modified Staphylococcal toxin having improved stability, comprising the steps of preparing a modified toxin in which a specific amino acid sequence is substituted and a vector for expressing the modified toxin, and culturing E. coli transformed with the vector, and a use thereof for the vaccine.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: May 29, 2007
    Assignee: LG Chem-Investment Ltd.
    Inventors: Hong-Kyun Lee, Yong-Ho Park, Kyu-Boem Han, Byoung-Sun Chang, Yong-Jun Lee
  • Patent number: 6806161
    Abstract: The present invention relates to low dielectric materials essential for a semiconductor having high density and high performance of the next generation, particularly to a process for preparing a porous interlayer insulating film having low dielectric constant containing pores with a size of a few nanometers or less. The present invention provides a process for preparing a porous wiring interlayer insulating film having very low dielectric constant for a semiconductor device comprising the steps of a) preparing a mixed complex of pore-forming organic molecules and a matrix resin, b) coating the mixed complex on a substrate, and c) heating the mixed complex to remove the organic molecules therefrom, thereby forming pores inside the complex.
    Type: Grant
    Filed: April 27, 2001
    Date of Patent: October 19, 2004
    Assignee: LG Chem Investment, Ltd.
    Inventors: Min-Jin Ko, Hye-Yeong Nam, Dong-Seok Shin, Myung-Sun Moon, Jung-Won Kang
  • Patent number: 6747050
    Abstract: The present invention provides to an isoxazoline derivative of formula (I), the pharmaceutically acceptable salts, esters and stereochemically isomeric forms thereof, and the use of the derivative in inhibiting the activity of caspases. The present invention also provides a pharmaceutical composition for preventing inflammation and apoptosis which comprise the isoxazoline derivative, pharmaceutically acceptable salts, esters and stereochemically isomeric forms thereof and the process for preparing the same. The derivative according to the present invention can be effectively used in treating diseases due to caspases, such as, for example the disease in which cells are abnormally died, dementia, cerebral stroke, AIDS, diabetes, gastric ulcer, hepatic injury by hepatitis, sepsis, organ transplantation rejection reaction and anti-inflammation.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: June 8, 2004
    Assignee: LG Chem Investment Ltd.
    Inventors: Eunice Eun-Kyeong Kim, Mi-Jeong Park, Tae-Hee Lee, Hye-Kyung Chang, Tae-Kyo Park, Chang-Yuil Kang, Young-Myeong Kim, Kwang-Yul Moon, Young-Leem Oh, Chang-Hee Min, Hyun-Ho Chung
  • Patent number: 6743471
    Abstract: The present invention relates to low dielectric materials essential for a semiconductor having high density and high performance of the next generation, particularly to a process for preparing a porous interlayer insulating film having low dielectric constant containing pores with a size of a few nanometers or less. The present invention provides a process for preparing a porous wiring interlayer insulating film having very low dielectric constant for a semiconductor device comprising the steps of a) preparing a mixed complex of pore-forming organic molecules and a matrix resin, b) coating the mixed complex on a substrate, and c) heating the mixed complex to remove the organic molecules therefrom, thereby forming pores inside the complex.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: June 1, 2004
    Assignee: LG Chem Investment, Ltd.
    Inventors: Min-Jin Ko, Hye-Yeong Nam, Dong-Seok Shin, Myung-Sun Moon, Jung-Won Kang
  • Patent number: 6733786
    Abstract: The present invention relates to an improved somatotropin composition consisting of somatotropin having in vivo, at least one of lipid-soluble vitamins and at least one of pharmaceutically acceptable lubricants, which improves poor syringeability under cold temperature which has been a defect of the conventional somatotropin formulation using vitamins, and which shows at least the equivalent effect to that of the conventional formulation.
    Type: Grant
    Filed: November 21, 2001
    Date of Patent: May 11, 2004
    Assignee: LG Chem Investment, Ltd.
    Inventors: Nam Joong Kim, Je Phil Ryoo
  • Publication number: 20030216058
    Abstract: The present invention relates to low dielectric materials essential for a semiconductor having high density and high performance of the next generation, particularly to a process for preparing a porous interlayer insulating film having low dielectric constant containing pores with a size of a few nanometers or less.
    Type: Application
    Filed: May 28, 2003
    Publication date: November 20, 2003
    Applicant: LG Chem Investment, Ltd., a Korea corporation
    Inventors: Min-Jin Ko, Hye-Yeong Nam, Dong-Seok Shin, Myung-Sun Moon, Jung-Won Kang
  • Patent number: 6630593
    Abstract: A process for preparing a 1-substituted 5-hydroxymethylimidazole of the formula: , wherein R represents alkyl, hydroxyalkyl, allyl, or substituted or unsubstituted arylmethyl or diarylmethyl, comprising the step of reacting a 1-substituted 2-mercapto-5-hydroxymethylimidazole of the formula: , wherein R is as defined above, in the presence of a transition metal catalyst and an oxidizing agent in a solvent.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: October 7, 2003
    Assignee: LG Chem Investment Ltd.
    Inventors: Hyun-Ik Shin, Jay-Hyok Chang, Kyoo-Woong Lee, Hyun-Il Lee, Sung-Kee Kim, Do-Hyun Nam
  • Patent number: 6559320
    Abstract: The present invention relates to a novel process for preparing pyrrole ester compounds, which are key intermediates in the preparation of farnesyl transferase inhibitors, an anti-cancer agent Horner-Emmons reaction of aldehyde compounds provides the corresponding &agr;,&bgr;-unsaturated esters, which without any separation and/or purification steps, are treated with toluenesutfonyl-methylisocyanate in the presence of base to give pyrrole esters in one-pot fashion.
    Type: Grant
    Filed: August 22, 2002
    Date of Patent: May 6, 2003
    Assignee: LG Chem Investment Ltd.
    Inventors: Hyun Ik Shin, Sung Tak Oh, Jay Hyok Chang, Kyoo Woong Lee