Patents by Inventor Dae-Ho Son

Dae-Ho Son 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