Patents by Inventor Sang Hyeup Lee

Sang Hyeup 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).

  • Patent number: 9994583
    Abstract: The present invention relates to a method for preparing a curable bicyclic compound derived from biomass. The method includes preparing starting materials furan and methyl acrylate by preparing furan from hemicellulose extracted from biomass, and methyl acrylate from glycerol generated from biomass, preparing an intermediate compound comprising a bicycle and an alcohol functional group by reacting the furan and the methyl acrylate through a Diels-Alder reaction and consecutive reduction, and preparing a curable bicyclic compound that includes the bicycle and an epoxide functional group by reacting the intermediate compound and epichlorohydrin.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: June 12, 2018
    Assignee: Korea Institute of Industrial Technology
    Inventors: Jin-Ku Cho, Sang-Yong Kim, Do-Hoon Lee, Bo-Ra Kim, Baek-Jin Kim, Jae-Won Jung, Sang-Hyeup Lee, Jae-Soung Lee
  • Publication number: 20160333025
    Abstract: The present invention relates to a curable bicyclic compound derived from biomass, solvent-free curable composition and a method for preparing thereof. The curable compound derived from biomass according to the invention comprises a bicycle structure, to which one of two epoxide functional groups are bonded.
    Type: Application
    Filed: July 28, 2016
    Publication date: November 17, 2016
    Inventors: Jin-Ku Cho, Sang-Yong Kim, Do-Hoon Lee, Bo-Ra Kim, Baek-Jin Kim, Jae-Won Jung, Sang-Hyeup Lee, Jae-Soung Lee
  • Patent number: 9422305
    Abstract: The present invention relates to a curable bicyclic compound derived from biomass, solvent-free curable composition and a method for preparing thereof. The curable compound derived from biomass according to the invention comprises a bicycle structure, to which one of two epoxide functional groups are bonded.
    Type: Grant
    Filed: November 13, 2013
    Date of Patent: August 23, 2016
    Assignee: Korea Institute of Industrial Technology
    Inventors: Jin Ku Cho, Sang Yong Kim, Do Hoon Lee, Bo Ra Kim, Baek Jin Kim, Jae Won Jung, Sang Hyeup Lee, Jae Soung Lee
  • Patent number: 9035018
    Abstract: The present invention relates to a furan-based curable compound derived from carbohydrate-based biomass, to a solvent-free curable composition, and to a method for preparing thereof, wherein the furan-based curable compound derived from biomass according to the present invention includes two epoxide functional groups bonded to at least one furan-based compound. The present invention may provide an environmentally friendly next-generation curable compound comprising a novel furan-based compound derived from biomass, which may be substituted for curable materials derived from oil resources, as a basic backbone, as well as a composition containing the same. According to the present invention, a curable material, which has a low contraction ratio during curing as compared to conventional radical-type curing materials, may be obtained, and a compound applied to the novel curing material may be prepared with a combination of excellent efficiency and cost-effectiveness.
    Type: Grant
    Filed: May 11, 2010
    Date of Patent: May 19, 2015
    Assignee: Korea Institute of Industrial Technology
    Inventors: Jin Ku Cho, Sang Yong Kim, Do Hoon Lee, Bo Ra Kim, Baek Jin Kim, Jae Won Jung, Sang Hyeup Lee, Jae Soung Lee
  • Publication number: 20140066637
    Abstract: The present invention relates to a curable bicyclic compound derived from biomass, solvent-free curable composition and a method for preparing thereof. The curable compound derived from biomass according to the invention comprises a bicycle structure, to which one of two epoxide functional groups are bonded.
    Type: Application
    Filed: November 13, 2013
    Publication date: March 6, 2014
    Applicant: Korea Institute of Industrial Technology
    Inventors: Jin Ku Cho, Sang Yong Kim, Do Hoon Lee, Bo Ra Kim, Baek Jin Kim, Jae Won Jung, Sang Hyeup Lee, Jae Soung Lee
  • Publication number: 20120252996
    Abstract: The present invention relates to a curable bicyclic compound derived from biomass, solvent-free curable composition and a method for preparing thereof. The curable compound derived from biomass according to the invention comprises a bicycle structure, to which one of two epoxide functional groups are bonded.
    Type: Application
    Filed: May 5, 2010
    Publication date: October 4, 2012
    Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Jin Ku Cho, Sang Yong Kim, Do Hoon Lee, Bo Ra Kim, Baek Jin Kim, Jae Won Jung, Sang Hyeup Lee, Jae Soung Lee
  • Publication number: 20120220742
    Abstract: The present invention relates to a furan-based curable compound derived from carbohydrate-based biomass, to a solvent-free curable composition, and to a method for preparing thereof, wherein the furan-based curable compound derived from biomass according to the present invention includes two epoxide functional groups bonded to at least one furan-based compound. The present invention may provide an environmentally friendly next-generation curable compound comprising a novel furan-based compound derived from biomass, which may be substituted for curable materials derived from oil resources, as a basic backbone, as well as a composition containing the same. According to the present invention, a curable material, which has a low contraction ratio during curing as compared to conventional radical-type curing materials, may be obtained, and a compound applied to the novel curing material may be prepared with a combination of excellent efficiency and cost-effectiveness.
    Type: Application
    Filed: May 11, 2010
    Publication date: August 30, 2012
    Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY
    Inventors: Jin Ku Cho, Sang Yong Kim, Do Hoon Lee, Bo Ra Kim, Baek Jin Kim, Jae Won Jung, Sang Hyeup Lee, Jae Soung Lee
  • Patent number: 8148541
    Abstract: Disclosed herein are rhodanine derivatives, a method for the preparation thereof, and a pharmaceutical composition containing the same. The rhodanine derivatives have inhibitory activity against protein phosphatases (PPase) such as PTP1B, Prl-3, LAR, CD45, Cdc25A, Cdc25B, Cdc25C, Yop, PP1 and VHR, and can be applied for the prevention and treatment of PPase-caused diseases, including autoimmune diseases, diabetes, impaired glucose intolerance, insulin resistance, obesity, cancers, etc. when the inhibitory activity thereof is modulated.
    Type: Grant
    Filed: December 8, 2006
    Date of Patent: April 3, 2012
    Assignee: Korea Research Institute of Bioscience and Biotechnology
    Inventors: Seong Eon Ryu, Seung Jun Kim, Dae Gwin Jeong, Sang Hyeup Lee, Suk Kyeong Jung, Hwan Mook Kim, Song Kyu Park, Ki Ho Lee, Chang Woo Lee, Joong-Kwon Choi, Jin Hee Ahn
  • Publication number: 20090042872
    Abstract: Disclosed herein are rhodanine derivatives, a method for the preparation thereof, and a pharmaceutical composition containing the same. The rhodanine derivatives have inhibitory activity against protein phosphatases (PPase) such as PTP1B, Prl-3, LAR, CD45, Cdc25A, Cdc25B, Cdc25C, Yop, PP1 and VHR, and can be applied for the prevention and treatment of PPase-caused diseases, including autoimmune diseases, diabetes, impaired glucose intolerance, insulin resistance, obesity, cancers, etc. when the inhibitory activity thereof is modulated.
    Type: Application
    Filed: December 8, 2006
    Publication date: February 12, 2009
    Applicants: Korea Research Institute of Bioscience and Biotechnology, Korea Research Institute of Chemical Technology
    Inventors: Seong Eon Ryu, Seung Jun Kim, Dae Gwin Jeong, Sang Hyeup Lee, Suk Kyeong Jung, Hwan Mook Kim, Song Kyu Park, Ki Ho Lee, Chang Woo Lee, Joong-Kwon Choi, Jin Hee Ahn