Patents by Inventor Jong Sang Chung

Jong Sang Chung 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).

  • Patent number: 11952652
    Abstract: Provided is a method of manufacturing a zinc-plated steel sheet. The method includes: coating a metal on the steel sheet on a steel sheet; annealing the metal coated steel sheet; and zinc plating the annealed steel sheet by dipping in a molten zinc plating bath. Further provided is a method of manufacturing a hot-press part including: coating a metal on the steel sheet on a steel sheet; annealing the metal coated steel sheet; zinc plating the annealed steel sheet by dipping in a molten zinc plating bath; heating the zinc-plated steel sheet; and press forming the heated steel sheet.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: April 9, 2024
    Assignee: POSCO CO., LTD
    Inventors: Il-Ryoung Sohn, Jong-Sang Kim, Joong-Chul Park, Yeol-Rae Cho, Jin-Keun Oh, Han-Gu Cho, Bong-Hoon Chung, Jong-Seog Lee
  • Patent number: 7901670
    Abstract: Provided is a process for purifying human interferon beta from a recombinant human interferon beta-containing culture comprising performing affinity chromatography and cation exchange chromatography, wherein the affinity chromatography includes: adsorbing the interferon beta-containing culture to an equilibrated affinity chromatography column, followed by washing with an equilibration buffer solution; washing the column with a washing buffer solution A of pH 6.5-7.5 containing 30-60 wt % of propylene glycol and a washing buffer solution B of pH 6.5-7.5 containing 10-30 wt % of propylene glycol and 1-2M NaCl; and eluting a human interferon beta-containing fraction with a buffer solution of pH 6.5-7.5 containing 40-60 wt % of propylene glycol and 1-2M NaCl.
    Type: Grant
    Filed: December 4, 2004
    Date of Patent: March 8, 2011
    Assignee: CJ Cheiljedang Corporation
    Inventors: Ji Sook Park, Jong Sang Chung, Min Ji Baek, Jee Won Ahn, Ki Wan Kim, Hyung Ki Park, Dong Eok Lee, Myung Suk Oh
  • Patent number: 7780960
    Abstract: Provided is a process for purifying human interferon beta from a recombinant human interferon beta-containing culture comprising performing affinity chromatography and reversed-phase high-performance liquid chromatography (RP-HPLC), wherein the affinity chromatography includes: adsorbing the interferon beta-containing culture to an equilibrated affinity chromatography column, followed by washing with an equilibration buffer solution; washing the column with a washing buffer solution A of pH 6.5-7.5 containing 30-60 wt % of propylene glycol and a washing buffer solution B of pH 6.5-7.5 containing 10-30 wt % of propylene glycol and 1-2M NaCl; and eluting a human interferon beta-containing fraction with a buffer solution of pH 6.5-7.5 containing 40-60 wt % of propylene glycol and 1-2M NaCl.
    Type: Grant
    Filed: December 4, 2004
    Date of Patent: August 24, 2010
    Assignee: CJ Cheiljedang Corporation
    Inventors: Ji Sook Park, Jong Sang Chung, Min Ji Baek, Jee Won Ahn, Ki Wan Kim, Hyung Ki Park, Dong Eok Lee, Myung Suk Oh
  • Patent number: 7344858
    Abstract: Disclosed are human G-CSF isoforms having a modified amino acid sequence containing a glycosylation sequence Asn-X-Ser/Thr (N-X-S/T) at one or more specific amino acid positions according to the present invention, genes encoding the human G-CSF isoforms, and expression vectors carrying the genes, eukaryotic cells transformed or transfected with the expression vectors. Also, the present invention discloses a method of preparing a glycosylated human G-CSF isoform, comprising the steps of culturing the transformant or transfectant and isolating a glycosylated human G-CSF isoform from the culture supernatant or cell lysates, a human G-CSF isoform prepared by the method, and a pharmaceutical composition comprising the human G-CSF isoform.
    Type: Grant
    Filed: August 29, 2003
    Date of Patent: March 18, 2008
    Assignee: CJ Corp
    Inventors: Eun Jung Lee, Hyun Seok Kim, Jong Sang Chung, Ki Wan Kim, Yeon Hyang Kim, Hyune Soo Lee, Hyung Kon Koh, Myung Suk Oh
  • Publication number: 20040082038
    Abstract: Disclosed are human G-CSF isoforms having a modified amino acid sequence containing a glycosylation sequence Asn-X-Ser/Thr (N-X-S/T) at one or more specific amino acid positions according to the present invention, genes encoding the human G-CSF isoforms, and expression vectors carrying the genes, eukaryotic cells transformed or transfected with the expression vectors. Also, the present invention discloses a method of preparing a glycosylated human G-CSF isoform, comprising the steps of culturing the transformant or transfectant and isolating a glycosylated human G-CSF isoform from the culture supernatant or cell lysates, a human G-CSF isoform prepared by the method, and a pharmaceutical composition comprising the human G-CSF isoform.
    Type: Application
    Filed: August 29, 2003
    Publication date: April 29, 2004
    Inventors: Eun Jung Lee, Hyun Seok Kim, Jong Sang Chung, Ki Wan Kim, Yeon Hyang Kim, Hyune Soo Lee, Hyung Kon Koh, Myung Suk Oh
  • Patent number: 6469209
    Abstract: The present invention relates to novel acrylate-type N-methyl E-2-(2-methylphenyl)oxymethyl)-6-methylphenyl-glyoxylamide O-methyl oxime represented by formula (1), its preparation method and its use as fungicides. The compound of the present invention has not only stronger fungicidal effect on plant pathogens at low concentrations but also broader fungicidal spectrum than the conventional fungicides. Especially, because the compound has excellent systemic and curative effect as well as no toxicity, it can be used as an efficacious agricultural fungicide. In addition, the compound of the present invention can be useful as environmental-friendly fungicide capable of causing less environmental pollution fungicide due to its strong fungicidal effect at low concentrations.
    Type: Grant
    Filed: December 14, 2001
    Date of Patent: October 22, 2002
    Assignee: Dongbu Hannong Chemical Co., Ltd.
    Inventors: Hong Lim, Bong Jin Chung, Jong Sang Chung, In Young Choi, Dae Jong Park, Chang Il Hwang