Patents by Inventor Myong Jae Yoo

Myong Jae Yoo 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: 11884759
    Abstract: This application relates to a low-dielectric thermally curable resin composition for solving a problem of increased transmission loss. In one aspect, the low-dielectric thermally curable resin composition includes a (meth)acrylic monomer having an alicyclic heterocycle, a polyfunctional (meth)acrylic monomer, an initiator, and a curing accelerator, and a low dielectric material prepared therefrom. Various embodiments can provide excellent low dielectric properties with a dielectric constant (Dk) in a high frequency area of 1 to 20 GHz of less than, for example, 3.28. In addition, the low dielectric material can have a significantly reduced transmission loss with a dissipation factor (Df) in an area of 1 to 20 GHz of less than, for example, 0.008, and thus, may implement excellent transmission properties in excellent 5G mobile communication.
    Type: Grant
    Filed: December 2, 2021
    Date of Patent: January 30, 2024
    Assignee: KOREA ELECTRONICS TECHNOLOGY INSTITUTE
    Inventors: Myong Jae Yoo, Churl Seung Lee
  • Publication number: 20230081954
    Abstract: Disclosed is a method for manufacturing a laminated piezoelectric composite. The method includes wet-mixing ceramic powder, a polymer binder, a plasticizer and a solvent for 4 to 72 hours so as to generate a mixed slurry, introducing the mixed slurry into a tape casting process so as to prepare a plurality of piezoelectric composite sheets, drying and forming the plurality of piezoelectric composite sheets using a roll-to-roll process so as to prepare the plurality of formed piezoelectric composite sheets, forming internal electrodes on the plurality of piezoelectric composite sheets so as to prepare the plurality of piezoelectric composite sheets having the internal electrodes, laminating and pressing the plurality of piezoelectric composite sheets having the internal electrodes so as to generate a piezoelectric composite sheet laminate having the internal electrodes, and cutting the piezoelectric composite sheet laminate having the internal electrodes into a desired shape and size.
    Type: Application
    Filed: August 29, 2022
    Publication date: March 16, 2023
    Applicant: Korea Electronics Technology Institute
    Inventors: Intae SEO, Hyung Won KANG, Seung Ho HAN, Myong Jae YOO, Hyunseung YANG
  • Publication number: 20220169769
    Abstract: This application relates to a low-dielectric thermally curable resin composition for solving a problem of increased transmission loss. In one aspect, the low-dielectric thermally curable resin composition includes a (meth)acrylic monomer having an alicyclic heterocycle, a polyfunctional (meth)acrylic monomer, an initiator, and a curing accelerator, and a low dielectric material prepared therefrom. Various embodiments can provide excellent low dielectric properties with a dielectric constant (Dk) in a high frequency area of 1 to 20 GHz of less than, for example, 3.28. In addition, the low dielectric material can have a significantly reduced transmission loss with a dissipation factor (Df) in an area of 1 to 20 GHz of less than, for example, 0.008, and thus, may implement excellent transmission properties in excellent 5G mobile communication.
    Type: Application
    Filed: December 2, 2021
    Publication date: June 2, 2022
    Inventors: Myong Jae YOO, Churl Seung LEE
  • Publication number: 20220077381
    Abstract: A method of forming an electrode in a ceramic transducer electronic component is provided. The method includes preparing a sintered body for a ceramic transducer containing a metal oxide, performing patterning by irradiating a laser on a surface of the sintered body for a ceramic transducer, and forming a metal electrode by performing an electroless plating process on the sintered body for a ceramic transducer on which the patterning is formed, wherein, in the performing of the patterning by irradiating the laser on the surface of the sintered body for a ceramic transducer, the patterning is performed by irradiating the laser that satisfies at least one of a predetermined power condition and a predetermined processing speed condition.
    Type: Application
    Filed: September 7, 2021
    Publication date: March 10, 2022
    Inventors: Myong Jae YOO, Hyung Won KANG, Seung Ho HAN
  • Patent number: 10515737
    Abstract: A conductive paste composition, a method for preparing the same, and an electrode formed by the conductive paste composition are disclosed. In one aspect, the conductive paste composition includes a copper-based particle and a boron-based particle of which a surface is partially or entirely coated with boron oxide. The boron-based particle is crystalline boron-based particle or amorphous boron-based particle. The boron-based particle has a content of more than 1 wt % to less than 10 wt % based on a total content of the conductive paste composition.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: December 24, 2019
    Assignee: Korea Electronics Technology Institute
    Inventors: Sung Hyun Kim, Ji Sun Park, Myong Jae Yoo
  • Publication number: 20190115117
    Abstract: A conductive paste composition, a method for preparing the same, and an electrode formed by the conductive paste composition are disclosed. In one aspect, the conductive paste composition includes a copper-based particle and a boron-based particle of which a surface is partially or entirely coated with boron oxide. The boron-based particle is crystalline boron-based particle or amorphous boron-based particle. The boron-based particle has a content of more than 1 wt % to less than 10 wt % based on a total content of the conductive paste composition.
    Type: Application
    Filed: October 31, 2017
    Publication date: April 18, 2019
    Inventors: Sung Hyun Kim, Ji Sun Park, Myong Jae Yoo
  • Publication number: 20180062006
    Abstract: Disclosed is a conductive paste for a front electrode of a solar cell, including copper-silver core-shell particles, boron, and a binder, wherein the boron is contained in an amount of 2.5 to 11 wt % based on the total weight of the conductive paste.
    Type: Application
    Filed: March 1, 2017
    Publication date: March 1, 2018
    Inventors: Sung Hyun KIM, Myong Jae YOO, Ji Sun PARK
  • Patent number: 7964671
    Abstract: The present invention relates to a prepreg, a composite film, and a laminated material for circuit used for thermosetting composite resin compositions and printed circuit boards, and particularly to a thermosetting composite resin composition mixed with COP (Cyclo Olefin Polymer) and thermally cross-linkable resin, wherein the COP having excellent electrical characteristics at a high frequency and thermally cross-linkable resin are blended to allow having a less dielectric constant and a less dielectric loss than those of the conventional composite resin composition, and inorganic fillers such as ceramic material, metal material, carbon black are added to allow having dielectric characteristics covering from a low dielectric constant to a high dielectric constant.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: June 21, 2011
    Assignee: Korea Electronics Technology Institute
    Inventors: Myong Jae Yoo, Woo Sung Lee, Seong Dae Park, Se Hoon Park
  • Publication number: 20090011262
    Abstract: The present invention relates to a prepreg, a composite film, and a laminated material for circuit used for thermosetting composite resin compositions and printed circuit boards, and particularly to a thermosetting composite resin composition mixed with COP (Cyclo Olefin Polymer) and thermally cross-linkable resin, wherein the COP having excellent electrical characteristics at a high frequency and thermally cross-linkable resin are blended to allow having a less dielectric constant and a less dielectric loss than those of the conventional composite resin composition, and inorganic fillers such as ceramic material, metal material, carbon black are added to allow having dielectric characteristics covering from a low dielectric constant to a high dielectric constant.
    Type: Application
    Filed: September 18, 2007
    Publication date: January 8, 2009
    Inventors: Myong Jae Yoo, Woo Sung Lee, Seong Dae Park, Se Hoon Park