Patents by Inventor Woon Hwa Lee

Woon Hwa 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).

  • Economic process for producing xylose from hydrolysate using electrodialysis and direct recovery method
    Patent number: 9133229
    Abstract: The present invention relates to an environmentally friendly, simple and economic process for producing xylose. The process comprises the steps of: a) countercurrently extracting tropical fruit biomass by hydrolysis with sulfuric acid to obtain a high-concentration xylose extract; b) adjusting the extract to a pH of 1.5-2.5 and decolorizing and filtering the pH-adjusted extract; c) desalting the filtrate in an electrodialysis device; and d) recycling a waste sulfuric acid solution recovered from step c), to step a), and concentrating and directly recovering the desalted filtrate to obtain xylose crystals.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: September 15, 2015
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Joo-hang Lee, Jun-gap An, Seung-won Park, Taek-beom Kim, Seong-bo Kim, Dong-hoon Lee, Woon-hwa Lee, Dae-Ho Son, Seung-bae Ji, Kang-pyo Lee
  • Economic Process for Producing Xylose from Hydrolysate Using Electrodialysis and Direct Recovery Method
    Publication number: 20120211366
    Abstract: The present invention relates to an environmentally friendly, simple and economic process for producing xylose. The process comprises the steps of: a) countercurrently extracting tropical fruit biomass by hydrolysis with sulfuric acid to obtain a high-concentration xylose extract; b) adjusting the extract to a pH of 1.5-2.5 and decolorizing and filtering the pH-adjusted extract; c) desalting the filtrate in an electrodialysis device; and d) recycling a waste sulfuric acid solution recovered from step c), to step a), and concentrating and directly recovering the desalted filtrate to obtain xylose crystals.
    Type: Application
    Filed: October 30, 2009
    Publication date: August 23, 2012
    Applicant: CJ Cheiljedang Corporation
    Inventors: Joo-hang Lee, Jun-gap An, Seung-won Park, Taek-beom Kim, Seong-bo Kim, Dong-hoon Lee, Woon-hwa Lee, Dae-Ho Son, Seung-bae Ji, Kang-pyo Lee
  • Microorganism producing fructosyl transferase and method for producing fructooligosaccharides and neofructooligosaccharides using the same
    Patent number: 7241607
    Abstract: The present invention relates to a novel microorganism and a method for producing fructooligosaccharides and neofructooligosaccharides. More particularly, the present invention relates to Penicillium citrinum KCTC 10225BP of soil origin which produces fructosyl transferase and hydrolyzes sucrose into fructooligosaccharides of the following formula I: in which n is integer of 1 to 5, G represents glucose and F represents fructose, and neofructooligosaccharides of the following formula II: in which n is integer of 1 to 5, G and F are defined as above, at the same time using the fructosyl transferase, and to a method for producing simultaneously fructooligosaccharides and neofructooligosaccharides using said microorganism.
    Type: Grant
    Filed: May 18, 2004
    Date of Patent: July 10, 2007
    Assignee: CJ Corporation
    Inventors: Joon Sang Han, Kang June Park, Dae Sub Shin, Jung Hoon Kim, Jin Chul Kim, Ki Chang Lee, Woon Hwa Lee, Seung Wook Kim, Seung Won Park
  • Microorganism producing frutosyl transferase and method for producing fructooligosaccharides and neofructooligosaccharides using the same
    Patent number: 6972189
    Abstract: The present invention relates to a novel microorganism and a method for producing fructooligosaccharides and neofructooligosaccharides. More particularly, the present invention relates to Penicillium citrinum KCTC 10225BP of soil origin which produces fructosyl transferase and hydrolyzes sucrose into fructooligosaccharides of the following formula I: in which n is integer of 1 to 5, G represents glucose and F represents fructose, and neofructooligosaccharides of the following formula II: in which n is integer of 1 to 5, G and F are defined as above, at the same time using the fructosyl transferase, and to a method for producing simultaneously fructooligosaccharides and neofructooligosaccharides using said microorganism.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: December 6, 2005
    Assignee: CJ Corporation
    Inventors: Joon Sang Han, Kang June Park, Dae Sub Shin, Jung Hoon Kim, Jin Chul Kim, Ki Chang Lee, Woon Hwa Lee, Seung Wook Kim, Seung Won Park
  • Microorganism producing frutosyl transferase and method for producing fructooligosaccharides and neofructooligosacchariedes using the same
    Publication number: 20040214293
    Abstract: The present invention relates to a novel microorganism and a method for producing fructooligosaccharides and neofructooligosaccharides.
    Type: Application
    Filed: May 18, 2004
    Publication date: October 28, 2004
    Inventors: Joon Sang Han, Kang June Park, Dae Sub Shin, Jung Hoon Kim, Jin Chul Kim, Ki Chang Lee, Woon Hwa Lee, Seung Wook Kim, Seung Won Park
  • Microorganism producing frutosyl transferase and method for producing fructooligosaccharides and neofructooligosaccharides using the same
    Publication number: 20030054499
    Abstract: The present invention relates to a novel microorganism and a method for producing fructooligosaccharides and neofructooligosaccharides.
    Type: Application
    Filed: May 13, 2002
    Publication date: March 20, 2003
    Inventors: Joon Sang Han, Kang June Park, Dae Sub Shin, Jung Hoon Kim, Jin Chul Kim, Ki Chang Lee, Woon Hwa Lee, Seung Wook Kim, Seung Won Park