Patents by Inventor Jeung-yil Park

Jeung-yil Park 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).

  • Rigid polyurethane foam and preparation method thereof
    Patent number: 10604615
    Abstract: A rigid polyurethane foam which is a polymerization product of a composition including a concentrated acid hydrolytic lignin, a polyol, and an isocyanate, and a method of preparing the rigid polyurethane foam.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: March 31, 2020
    Assignee: CJ CHEILJEDANG CORPORATION
    Inventors: Sun Joo Moon, Da Eun Kim, Jeung Yil Park, Sang Mok Lee, Min Ho Jung, Young Ran Kim, Jung Min Kim, Jin Hwa Chang
  • Method for preparing low-molecular lignin derivative
    Patent number: 10100073
    Abstract: A method of preparing a low-molecular lignin derivative comprises the step of: preparing lignin by hydrolyzing lignocellulosic biomass with an acid; preparing a first mixture by mixing 100 parts by weight of the lignin and 500 parts or more by weight of a phenolic compound; preparing a second mixture by mixing the first mixture with a solvent including the hydrophobic polar solvent; and recovering a low-molecular lignin derivative from the second mixture.
    Type: Grant
    Filed: May 22, 2014
    Date of Patent: October 16, 2018
    Assignee: CJ CHEILJEDANG CORP.
    Inventors: Min Ho Jung, Sun Joo Moon, Jeung Yil Park, Sang Mok Lee, Da Eun Kim, Young Ran Kim, Jung Min Kim, Jin Hwa Chang
  • RIGID POLYURETHANE FOAM AND PREPARATION METHOD THEREOF
    Publication number: 20170253689
    Abstract: A rigid polyurethane foam which is a polymerization product of a composition including a concentrated acid hydrolytic lignin, a polyol, and an isocyanate, and a method of preparing the rigid polyurethane foam.
    Type: Application
    Filed: November 5, 2015
    Publication date: September 7, 2017
    Inventors: Sun Joo MOON, Da Eun KIM, Jeung Yil PARK, Sang Mok LEE, Min Ho JUNG, Young Ran KIM, Jung Min KIM, Jin Hwa CHANG
  • METHOD FOR PREPARING LOW-MOLECULAR LIGNIN DERIVATIVE
    Publication number: 20160102114
    Abstract: A method of preparing a low-molecular lignin derivative comprises the step of: preparing lignin by hydrolyzing lignocellulosic biomass with an acid; preparing a first mixture by mixing 100 parts by weight of the lignin and 500 parts or more by weight of a phenolic compound; preparing a second mixture by mixing the first mixture with a solvent including the hydrophobic polar solvent; and recovering a low-molecular lignin derivative from the second mixture.
    Type: Application
    Filed: May 22, 2014
    Publication date: April 14, 2016
    Inventors: Min Ho JUNG, Sun Joo MOON, Jeung Yil PARK, Sang Mok LEE, Da Eun KIM, Young Ran KIM, Jung Min KIM, Jin Hwa CHANG
  • METHOD FOR CONVERTING LIGNOCELLULOSIC BIOMASS
    Publication number: 20120064574
    Abstract: The present invention aims to develop a pretreatment technology for performing efficient saccharification without losing carbohydrates (in particular, free carbohydrates, starch, xylan, or the like) due to solid-liquid separation and washing steps, as a pretreatment for enzymatic saccharification of a lignocellulosic biomass feedstock (including a lignocellulosic biomass feedstock containing readily degradable carbohydrates).
    Type: Application
    Filed: May 12, 2010
    Publication date: March 15, 2012
    Applicant: Incorp Adm Agency, Nat'l Agr & Food Res Org
    Inventors: Ken Tokuyasu, Jeung-yil Park, Riki Shiroma, Muhammad Imran Al-Haq