Patents by Inventor Shin Choi

Shin Choi 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: 11155655
    Abstract: The present invention provides an organometal catalyst having a cationic transition metal complex and a borate-based bulky anion, a method for preparing the same, and a method for preparing an oligomer using the same.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: October 26, 2021
    Inventors: Gyeong Shin Choi, Dong Hyun Jo, Hyun Taek Oh, Won Hee Kim, Seung Young Park
  • Patent number: 11142833
    Abstract: Methods for electrochemically oxidizing aromatic aldehydes, such as furfural and furfural derivatives, to carboxylic acids in acidic solutions are provided. Also provided are electrochemical cells for carrying out the oxidation reactions. The electrochemical oxidations may be conducted in aqueous media at ambient pressure and mild temperatures.
    Type: Grant
    Filed: October 9, 2017
    Date of Patent: October 12, 2021
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Kyoung-Shin Choi, Stephen Riley Kubota
  • Patent number: 11136679
    Abstract: Photoelectrochemical cells for the oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid and/or 2,5-diformylfuran are provided. Also provided are methods of using the cells to carry out the electrochemical and photoelectrochemical oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid and/or 2,5-diformylfuran.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: October 5, 2021
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Kyoung-Shin Choi, Hyun Gil Cha
  • Patent number: 11095005
    Abstract: An aspect of the present invention provides a rechargeable battery which makes placement of the electrode assembly in the case during assembly easy. The rechargeable battery includes an electrode assembly including a first electrode, a separator, and a second electrode, a case housing the electrode assembly and having an opening in a plane parallel to a flat side surface of the electrode assembly, the case being electrically connected to the first electrode, a cover closing the opening in the case, and an electrode terminal mounted to a terminal opening in the case and connected to the second electrode, wherein the electrode terminal and the second electrode are insulated from the case.
    Type: Grant
    Filed: November 20, 2015
    Date of Patent: August 17, 2021
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Hyun-Soo Lee, Jeong-Won Oh, Sang-Shin Choi
  • Publication number: 20210238753
    Abstract: Electrochemical cells and photoelectrochemical cells for the reduction of furfurals are provided. Also provided are methods of using the cells to carry out the reduction reactions. Using the cells and methods, furfurals can be converted into furan alcohols or linear ketones.
    Type: Application
    Filed: April 15, 2021
    Publication date: August 5, 2021
    Inventors: Kyoung-Shin Choi, John James Roylance, Stephen R. Kubota
  • Patent number: 11008662
    Abstract: Electrochemical cells and photoelectrochemical cells for the reduction of furfurals are provided. Also provided are methods of using the cells to carry out the reduction reactions. Using the cells and methods, furfurals can be converted into furan alcohols or linear ketones.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: May 18, 2021
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Kyoung-Shin Choi, John James Roylance, Stephen Riley Kubota
  • Patent number: 10988640
    Abstract: A two-component adhesive composition includes: (i) a first part of a (meth)acrylate-based monomer mixture including components (a1) to (a3) below: (a1) an alkyl (meth)acrylate compound, and any one or more of a (meth)acrylate compound having an alkoxysilyl group, and a (meth)acrylate compound having an unsaturated functional group except for an acryloyl group, (a2) 50 to 100 parts by weight of an adhesive reinforcing agent relative to the 100 parts by weight of the (meth)acrylate-based monomer mixture, and (a3) 1 to 10 parts by weight of a filler relative to the 100 parts by weight of the (meth)acrylate-based monomer mixture; and (ii) a second part including components (b1) and (b2) below with a weight ratio of 1:1 to 20:1, where (b1) 100 parts by weight of an epoxy resin, and (b2) 50 to 150 parts by weight of an initiator with respect to (b1).
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: April 27, 2021
    Inventors: Wan Kyu Oh, Gyeong Shin Choi, Seung Young Park
  • Patent number: 10966360
    Abstract: An apparatus for combining PCBs may include a pick-up mechanism, a gripping mechanism and a combining mechanism. The pick-up mechanism may pick-up the PCBs connected with each other by a flexible connection member. The gripping mechanism may grip a frame. The combining mechanism may press the flexible connection member using the frame to combine the PCBs with the frame. The process for combining the PCBs with the frame may be automatically performed so that a time for combining the PCBs with the frame is reduced and errors related to the combining process are decreased.
    Type: Grant
    Filed: April 15, 2019
    Date of Patent: March 30, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-Shin Choi, Seul-Ki Han, Myoun-Kyu Kang, Ki-Bong Mun, Du-San Baek
  • Publication number: 20200354489
    Abstract: The present invention provides a method for preparing a polybutene oligomer including a step of oligomerizing a polymerization solution including a halogenated hydrocarbon solvent, a nonpolar hydrocarbon solvent and an isobutene monomer in the presence of an organometal catalyst.
    Type: Application
    Filed: October 30, 2019
    Publication date: November 12, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Dong Hyun Jo, Jin Lee, Won Hee Kim, Gyeong Shin Choi
  • Publication number: 20200308323
    Abstract: The present invention provides an organometal catalyst having a cationic metal complex and a borate-based bulky anion, where the metal is one or more selected from the group consisting of metals in group 13, a method for preparing the same, and a method for preparing an oligomer or a polymer using the same.
    Type: Application
    Filed: April 5, 2019
    Publication date: October 1, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Gyeong Shin Choi, Dong Hyun Jo, Won Hee Kim, Seung Young Park, Hyun Taek Oh
  • Publication number: 20200291148
    Abstract: The present invention provides a method for preparing a transition metal complex, including a step of preparing a dispersion including a transition metal salt or alkoxide, and a coordinating solvent; and a step of reacting an organic borate-based compound containing a carbon-based, silyl-based or amine-based cation and a borate-based bulky anion, with the dispersion, wherein the transition metal is one or more selected from the metals in group 7 to group 12.
    Type: Application
    Filed: March 21, 2019
    Publication date: September 17, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Gyeong Shin Choi, Dong Hyun Jo, Hyun Taek Oh, Won Hee Kim, Seung Young Park
  • Publication number: 20200283550
    Abstract: The present invention provides a method for preparing a butene oligomer including a step of oligomerizing a polymerization solution including a halogenated hydrocarbon solvent, a nonpolar hydrocarbon solvent and an isobutene monomer in the presence of an organometal catalyst.
    Type: Application
    Filed: July 26, 2019
    Publication date: September 10, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Jin Lee, Dong Hyun Jo, Won Hee Kim, Gyeong Shin Choi
  • Patent number: 10759979
    Abstract: In the present invention, there is provided an adhesive composition which comprises carbon nanotubes and thus, exhibits high adhesive strength due to excellent lap shear strength.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: September 1, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Wan Kyu Oh, Seung Young Park, Gyeong Shin Choi
  • Publication number: 20200255960
    Abstract: Photoelectrochemical cells for the oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid and/or 2,5-diformylfuran are provided. Also provided are methods of using the cells to carry out the electrochemical and photoelectrochemical oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid and/or 2,5-diformylfuran.
    Type: Application
    Filed: April 9, 2020
    Publication date: August 13, 2020
    Inventors: Kyoung-Shin Choi, Hyun Gil Cha
  • Publication number: 20200248322
    Abstract: Electrochemical cells for the oxidation of 5-hydroxymethylfurfural are provided. Also provided are methods of using the cells to carry out the oxidation reactions. The electrochemical cells and methods use catalytic copper-based anodes to carry out the electrochemical oxidation reactions.
    Type: Application
    Filed: April 21, 2020
    Publication date: August 6, 2020
    Inventors: Kyoung-Shin Choi, Dohwan Nam
  • Publication number: 20200247924
    Abstract: The present invention provides an organometal catalyst having a cationic transition metal complex and a borate-based bulky anion, a method for preparing the same, and a method for preparing an oligomer using the same.
    Type: Application
    Filed: March 21, 2019
    Publication date: August 6, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Gyeong Shin Choi, Dong Hyun Jo, Hyun Taek Oh, Won Hee Kim, Seung Young Park
  • Patent number: 10669639
    Abstract: Electrochemical cells for the oxidation of 5-hydroxymethylfurfural are provided. Also provided are methods of using the cells to carry out the oxidation reactions. The electrochemical cells and methods use catalytic copper-based anodes to carry out the electrochemical oxidation reactions.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: June 2, 2020
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Kyoung-Shin Choi, Dohwan Nam
  • Patent number: 10655233
    Abstract: Electrochemical and photoelectrochemical cells for the oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid and/or 2,5-diformylfuran are provided. Also provided are methods of using the cells to carry out the electrochemical and photoelectrochemical oxidation of 5-hydroxymethylfurfural to 2,5-furandicarboxylic acid and/or 2,5-diformylfuran.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: May 19, 2020
    Assignee: Wisconsin Alumni Research Foundation
    Inventors: Kyoung-Shin Choi, Hyun Gil Cha
  • Publication number: 20200140296
    Abstract: Electrodialysis cell systems for water deionization is provided. Also provided are methods for using the electrodialysis cell systems. The cells use the forward and reverse reactions of a redox mediator and the combined operations of a deionization cell and an ion-accumulation cell to enable sustainable deionization with a significantly decreased operating voltage, relative to conventional deionization cells. The cells have applications in seawater desalination, water purification, and wastewater treatment.
    Type: Application
    Filed: November 7, 2018
    Publication date: May 7, 2020
    Inventors: Kyoung-Shin Choi, Dohwan Nam, Dong Ki Lee
  • Publication number: 20200084925
    Abstract: An apparatus for combining PCBs may include a pick-up mechanism, a gripping mechanism and a combining mechanism. The pick-up mechanism may pick-up the PCBs connected with each other by a flexible connection member. The gripping mechanism may grip a frame. The combining mechanism may press the flexible connection member using the frame to combine the PCBs with the frame. The process for combining the PCBs with the frame may be automatically performed so that a time for combining the PCBs with the frame is reduced and errors related to the combining process are decreased.
    Type: Application
    Filed: April 15, 2019
    Publication date: March 12, 2020
    Inventors: Young-Shin CHOI, Seul-Ki HAN, Myoun-Kyu KANG, Ki-Bong MUN, Du-San BAEK