Patents by Inventor Sei-Min PARK

Sei-Min 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).

  • ANODE MATERIAL FOR LITHIUM SECONDARY CELL, PRECURSOR FOR SAME, LITHIUM SECONDARY CELL, AND MANUFACTURING METHOD OF ANODE MATERIAL
    Publication number: 20260213197
    Abstract: The present invention relates to an anode material for a lithium secondary cell, a precursor for the anode material, a lithium secondary cell, and a manufacturing method of the anode material. A precursor for the anode material according to an aspect of the present invention is an anode material precursor containing graphite, wherein the graphite may have peaks in particle size ranges of 2-8 ?m and 10-25 ?m, respectively, and a particle size distribution with a D50 of 6-23 ?m.
    Type: Application
    Filed: December 11, 2023
    Publication date: July 23, 2026
    Applicants: POSCO HOLDINGS INC., RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Gang-Ho LEE, Sei-Min PARK, Yong-Jung KIM, Jang-Yul KIM
  • Method for preparing continuous carbon fiber-reinforced thermoplastic prepreg
    Patent number: 9873242
    Abstract: The present invention relates to a method for preparing a continuous carbon fiber-reinforced thermoplastic prepreg, and more specifically, to a method for preparing a continuous carbon fiber-reinforced thermoplastic semi-prepreg or prepreg, comprising the steps of: providing a plurality of carbon fibers having an increased width; preparing a layered product by arranging a thermoplastic film on at least a part of the upper and lower portions of the carbon fibers having an increased width; and preparing a joined product by joining the thermoplastic film and the carbon fibers comprising the layered body.
    Type: Grant
    Filed: December 24, 2013
    Date of Patent: January 23, 2018
    Assignees: POSCO, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Il-Joon Bae, Ik-Pyo Hong, Sei-Min Park, Sung-Young Lee
  • METHOD FOR PREPARING CONTINUOUS CARBON FIBER-REINFORCED THERMOPLASTIC PREPREG
    Publication number: 20150336369
    Abstract: The present invention relates to a method for preparing a continuous carbon fiber-reinforced thermoplastic prepreg, and more specifically, to a method for preparing a continuous carbon fiber-reinforced thermoplastic semi-prepreg or prepreg, comprising the steps of: providing a plurality of carbon fibers having an increased width; preparing a layered product by arranging a thermoplastic film on at least a part of the upper and lower portions of the carbon fibers having an increased width; and preparing a joined product by joining the thermoplastic film and the carbon fibers comprising the layered body.
    Type: Application
    Filed: December 24, 2013
    Publication date: November 26, 2015
    Applicants: POSCO, RESEARCH INSTITUTE OF INDUSTRIAL SCIENCE & TECHNOLOGY
    Inventors: Il-Joon BAE, Ik-Pyo HONG, Sei-Min PARK, Sung-Young LEE