Patents by Inventor Hyeon Su HEO

Hyeon Su HEO 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).

  • Method of preparing furfural compounds
    Patent number: 9469619
    Abstract: Provided is a two-step method of producing a compound of chemical formula 1 in the presence of an alcohol solvent and a Group 3B metal catalyst or a salt thereof, comprising a first step comprising alkylation or isomerization of an aldohexose-containing substrate to obtain an intermediate, and a second step comprising dehydration of the intermediate to produce a compound of chemical formula 1. Preferably, additional solvent and/or catalyst are not added in the second step.
    Type: Grant
    Filed: October 29, 2013
    Date of Patent: October 18, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jong Min Lee, Hyeon Su Heo, Moo Ho Lee, Kyung Hae Lee
  • Method of producing unsaturated acid from salt of hydroxycarboxylic acid
    Patent number: 9309181
    Abstract: A method of producing an unsaturated acid from a salt of a hydroxycarboxylic acid, the method includes providing an aqueous solution including a salt of a hydroxycarboxylic acid; adding a solvent with a boiling point of 200° C. or higher to the aqueous solution; and heating the aqueous solution at a temperature lower than the boiling point of the solvent to split a salt from the salt of the hydroxycarboxylic acid while simultaneously dehydrating the hydroxycarboxylic acid, thereby converting the hydroxycarboxylic acid to the unsaturated acid.
    Type: Grant
    Filed: February 17, 2015
    Date of Patent: April 12, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun Chwae, Hyeon su Heo, Seung joon Hwang, Nam soo Park, Moo ho Lee, Kwang myung Cho
  • METHOD OF PRODUCING UNSATURATED ACID FROM SALT OF HYDROXYCARBOXYLIC ACID
    Publication number: 20150232890
    Abstract: A method of producing an unsaturated acid from a salt of a hydroxycarboxylic acid, the method includes providing an aqueous solution including a salt of a hydroxycarboxylic acid; adding a solvent with a boiling point of 200° C. or higher to the aqueous solution; and heating the aqueous solution at a temperature lower than the boiling point of the solvent to split a salt from the salt of the hydroxycarboxylic acid while simultaneously dehydrating the hydroxycarboxylic acid, thereby converting the hydroxycarboxylic acid to the unsaturated acid.
    Type: Application
    Filed: February 17, 2015
    Publication date: August 20, 2015
    Inventors: Jun Chwae, Hyeon su Heo, Seung joon Hwang, Nam soo Park, Moo ho Lee, Kwang myung Cho
  • METHOD OF PREPARING FURFURAL COMPOUNDS
    Publication number: 20140128625
    Abstract: Provided is a two-step method of producing a compound of chemical formula 1 in the presence of an alcohol solvent and a Group 3B metal catalyst or a salt thereof, comprising a first step comprising alkylation or isomerization of an aldohexose-containing substrate to obtain an intermediate, and a second step comprising dehydration of the intermediate to produce a compound of chemical formula 1. Preferably, additional solvent and/or catalyst are not added in the second step.
    Type: Application
    Filed: October 29, 2013
    Publication date: May 8, 2014
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jong Min LEE, Hyeon Su HEO, Moo Ho LEE, Kyung Hae LEE