Patents by Inventor Sang Bok Kim

Sang Bok Kim 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: 12250801
    Abstract: The present invention provides an electromagnetic wave-absorbing composite material and a manufacturing method therefor, the electromagnetic wave-absorbing composite material comprising: a polymer composite including a refractive index-adjusting material therein; and a plurality of conductive wires formed on at least one surface of the polymer composite, wherein electromagnetic waves reflected in a matching frequency (f) range derived through Mathematical Formulas 1 to 3 described in the present invention are 0.2 dB or less.
    Type: Grant
    Filed: August 2, 2022
    Date of Patent: March 11, 2025
    Assignee: KOREA INSTITUTE OF MATERIALS SCIENCE
    Inventors: Byeong Jin Park, Tae Hoon Kim, Sang Bok Lee, Byung Mun Jung, Seung Han Ryu, Yu Kyung Han, Suk Jin Kwon
  • Publication number: 20250079281
    Abstract: Hybrid package substrates employing film metallization layers with outer pre-impregnated (PPG) region(s) to support high density bump and wire bond connections for respective bump and wire bond connected dies in the IC package, and related hybrid integrated circuit (IC) packages and fabrication methods are disclosed. The package substrate includes film metallization layers of a softer, flexible material that can more easily be patterned to support formation of high density, reduced pitch metal interconnects to support finer bump pitch connections to a bottom, first die(s) in a die region of the package substrate. The package substrate also includes one or more PPG regions a PPG metallization layer(s) adjacent to the die region of the package substrate that reinforces the film metallization layers and also supports the formation of wire bond pads for wire bond connections to an upper, second die(s) in the hybrid IC package.
    Type: Application
    Filed: August 30, 2023
    Publication date: March 6, 2025
    Inventors: Hong Bok We, Joan Rey Villarba Buot, Sang-Jae Lee, Zhijie Wang, Michelle Yejin Kim
  • Patent number: 12228485
    Abstract: The apparatus for diluting exhaust gas according to an exemplary embodiment of the present invention includes a stagnant air forming unit configured to form stagnant air by decelerating a flow velocity of introduced exhaust gas, an ejector unit connected to a front end of the stagnant air forming unit and configured to discharge the exhaust gas to a front, and a dilution unit coupled to a front end of the ejector unit.
    Type: Grant
    Filed: July 20, 2022
    Date of Patent: February 18, 2025
    Assignee: KOREA INSTITUTE OF MACHINERY & MATERIALS
    Inventors: Bangwoo Han, Gunhee Lee, Inyong Park, Sang Bok Kim, Keejung Hong, Hak Joon Kim, Yeawan Lee, Yong-Jin Kim
  • Publication number: 20250054954
    Abstract: A cathode active material for a lithium secondary battery includes a coating element and lithium-nickel metal oxide particles. A coating area defined as (AC/ANi)*100 1 is 25% or more. AC is an area of a region where a content of the coating element is 1.6 wt % or more based on a total weight of the lithium-nickel metal oxide particles in a quantitative map (Q-map) image obtained through a scanning electron microscope-energy dispersive X-ray spectroscopy (SEM-EDS), and ANi is an area of a region where nickel is present in the Q-map image obtained through the SEM-EDS.
    Type: Application
    Filed: July 31, 2024
    Publication date: February 13, 2025
    Inventors: Sung Soon PARK, Jong Hwa KIM, Yeong Bin YOO, Sang Bok KIM
  • Publication number: 20250033922
    Abstract: A wire transfer device is provided. The wire transfer device includes a frame, a bobbin connected to the frame and on which a wire is configured to be wound; a holder including a first end connected to the wire and a second end opposite to the first end and configured to be connected to foil; and a guide roller configured to guide a movement path of the wire or the holder. The guide roller includes a groove region for accommodating the wire and a protruding region extending from the groove region and configured to contact with the holder.
    Type: Application
    Filed: July 16, 2024
    Publication date: January 30, 2025
    Inventors: Jeong Bok LEE, Sang Hwa KIM, Kyun Yeol LIM, Kyoung Tae MIN
  • Publication number: 20240387815
    Abstract: A cathode active material for a lithium secondary battery includes a lithium-nickel metal oxide particle having a form of a secondary particle in which a plurality of primary particles are aggregated therein. The lithium-nickel metal oxide particle includes a penetration region formed in an area extending from a surface to a point 70% or less of a radius of the particle in a direction to a center of the particle. The penetration region includes a tungsten compound at an interface between the primary particles. A relative standard deviation (RSD) value calculated from results of measuring a tungsten content from the surface of the secondary particle to a depth of 10 10 nm 10 times at different points using an X-ray Photoelectron Spectroscopy (XPS) is in a range from 10% to 40%.
    Type: Application
    Filed: April 30, 2024
    Publication date: November 21, 2024
    Inventors: Sang Min PARK, Oh Hun KWON, Sang Bok KIM, Dong Il JANG, Ji Hye JANG, Jae Young CHOI
  • Publication number: 20240379965
    Abstract: A cathode active material for a lithium secondary battery includes a lithium-nickel-based metal oxide particle, and a coating formed on a surface of the lithium-nickel-based metal oxide particle. The coating includes a water-soluble polymer and an oxygen scavenger compound. Oxygen generated from the cathode active material can be directly removed by the coating.
    Type: Application
    Filed: May 6, 2024
    Publication date: November 14, 2024
    Inventors: Sang Bok KIM, Sung Beom KIM, Sang Min PARK, Ji Hye JANG
  • Patent number: 12132198
    Abstract: The cathode active material for a lithium secondary battery according to embodiments of the present invention includes a lithium-transition metal composite oxide particle including a plurality of primary particles, and the lithium-transition metal composite oxide particle includes a lithium-sulfur-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by preventing the layer structure deformation of the primary particles and removing residual lithium.
    Type: Grant
    Filed: November 25, 2022
    Date of Patent: October 29, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Sang Bok Kim, Sang Hye Shin, Sang Min Park, Tae Kyoung Lee, Myoung Lae Kim, Jeong Bae Yoon, Jik Soo Kim, Ji Hoon Choi
  • Publication number: 20240356011
    Abstract: A cathode active material for a lithium secondary battery includes a lithium-aluminum-titanium oxide formed on a surface of a lithium metal oxide particle having a specific formula. The cathode active material may have an improved structural stability even in a high temperature condition.
    Type: Application
    Filed: June 28, 2024
    Publication date: October 24, 2024
    Inventors: Mi Jung NOH, Jik Soo KIM, Sang Bok KIM, Ji Hoon CHOI, Kook Hyun HAN
  • Patent number: 12107258
    Abstract: A cathode active material for a lithium secondary battery includes a lithium metal oxide particle, and an organic poly-phosphate or an organic poly-phosphonate formed on at least portion of a surface of the lithium metal oxide particle. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the organic poly-phosphate or the organic poly-phosphonate.
    Type: Grant
    Filed: October 5, 2022
    Date of Patent: October 1, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Sang Bok Kim, Jik Soo Kim, Hyo Shin Kwak, Myoung Lae Kim
  • Patent number: 12107272
    Abstract: A cathode active material for a lithium secondary battery includes a lithium metal oxide particle, and an organic poly-phosphate or an organic poly-phosphonate formed on at least portion of a surface of the lithium metal oxide particle. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the organic poly-phosphate or the organic poly-phosphonate.
    Type: Grant
    Filed: October 5, 2022
    Date of Patent: October 1, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Sang Bok Kim, Jik Soo Kim, Hyo Shin Kwak, Myoung Lae Kim
  • Patent number: 12107256
    Abstract: The cathode active material for a lithium secondary battery according to embodiments of the present invention includes lithium-transition metal composite oxide particles including a plurality of primary particles, and the lithium-transition metal composite oxide particles have a lithium-potassium-containing portion formed between the primary particles. Thereby, it is possible to improve life-span properties and capacity properties by preventing the layer structure deformation of the primary particles and removing residual lithium.
    Type: Grant
    Filed: January 4, 2023
    Date of Patent: October 1, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Sang Min Park, Tae Kyoung Lee, Sang Bok Kim, Jik Soo Kim, Sang Hye Shin, Yu Na Shim, Jeong Bae Yoon
  • Publication number: 20240291019
    Abstract: A method of manufacturing a cathode active material for a lithium secondary battery according to embodiments of the present invention includes performing a first heat treatment on a first mixture of a transition metal precursor and a lithium precursor at a first calcination temperature to obtain a preliminary lithium-transition metal composite oxide particle; and performing a second heat treatment on a second mixture obtained by adding the lithium precursor to the preliminary lithium-transition metal composite oxide particle at a second calcination temperature which is lower than the first calcination temperature to form a lithium-transition metal composite oxide particle.
    Type: Application
    Filed: March 29, 2024
    Publication date: August 29, 2024
    Inventors: Sang Bok KIM, Jik Soo KIM, Jeong Bae YOON, Seung Ok LEE, Ji Hoon CHOI
  • Patent number: 12068475
    Abstract: A cathode active material for a lithium secondary battery includes a lithium-aluminum-titanium oxide formed on a surface of a lithium metal oxide particle having a specific formula. The cathode active material may have an improved structural stability even in a high temperature condition.
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: August 20, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Mi Jung Noh, Jik Soo Kim, Sang Bok Kim, Ji Hoon Choi, Kook Hyun Han
  • Patent number: 12002950
    Abstract: A cathode active material for a lithium secondary battery includes a lithium metal oxide particle and a thio-based compound formed on at least portion of a surface of the lithium metal oxide particle. The thio-based compound has a double bond that contains a sulfur atom. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the thio-based compound.
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: June 4, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Jik Soo Kim, Sang Bok Kim, Hyo Shin Kwak, Myoung Lae Kim, Se Rah Moon, Jin Seok Seo, Mi Jung Noh, Duck Chul Hwang
  • Patent number: 11978893
    Abstract: A cathode active material for a lithium secondary battery includes a lithium metal oxide particle and a thio-based compound formed on at least portion of a surface of the lithium metal oxide particle. The thio-based compound has a double bond that contains a sulfur atom. Chemical stability of the lithium metal oxide particle may be improved and surface residues may be reduced by the thio-based compound.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: May 7, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Jik Soo Kim, Sang Bok Kim, Hyo Shin Kwak, Myoung Lae Kim, Se Rah Moon, Jin Seok Seo, Mi Jung Noh, Duck Chul Hwang
  • Patent number: 11973179
    Abstract: A method of manufacturing a cathode active material for a lithium secondary battery according to embodiments of the present invention includes performing a first heat treatment on a first mixture of a transition metal precursor and a lithium precursor at a first calcination temperature to obtain a preliminary lithium-transition metal composite oxide particle; and performing a second heat treatment on a second mixture obtained by adding the lithium precursor to the preliminary lithium-transition metal composite oxide particle at a second calcination temperature which is lower than the first calcination temperature to form a lithium-transition metal composite oxide particle.
    Type: Grant
    Filed: September 22, 2021
    Date of Patent: April 30, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Sang Bok Kim, Jik Soo Kim, Jeong Bae Yoon, Seung Ok Lee, Ji Hoon Choi
  • Publication number: 20240113277
    Abstract: In a method of manufacturing a cathode active material for a lithium secondary battery, a preliminary lithium metal oxide particle is prepared. The preliminary lithium metal oxide particle is cleaned using a boron compound cleaning solution. A cathode active material for a lithium secondary particle includes a lithium metal oxide particle where a ratio of a B+ peak intensity relative to a sum of peak intensities of Li+, B+ and LiB+ fragments by a TOF-SIMS analysis is in a range from 0.03% to 1.5%.
    Type: Application
    Filed: December 13, 2023
    Publication date: April 4, 2024
    Inventors: Sang Bok Kim, Ji Hoon Choi, Jik Soo Kim, Mi Jung Noh, Dong Il Jang, Dong Wook Ha
  • Patent number: 11888102
    Abstract: In a method of manufacturing a cathode active material for a lithium secondary battery, a preliminary lithium metal oxide particle is prepared. The preliminary lithium metal oxide particle is cleaned using a boron compound cleaning solution. A cathode active material for a lithium secondary particle includes a lithium metal oxide particle where a ratio of a B+ peak intensity relative to a sum of peak intensities of Li+, B+ and LiB+ fragments by a TOF-SIMS analysis is in a range from 0.03% to 1.5%.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: January 30, 2024
    Assignee: SK On Co., Ltd.
    Inventors: Sang Bok Kim, Ji Hoon Choi, Jik Soo Kim, Mi Jung Noh, Dong Il Jang, Dong Wook Ha
  • Publication number: 20230361291
    Abstract: A cathode active material for a lithium secondary battery according to an embodiment of the present invention includes a lithium-transition metal oxide particle. The lithium-transition metal oxide particle has a FWHM ratio measured by an in-situ X-ray Diffraction spectroscopy (XRD) and defined by Equation 1 of 400% or less. Life-span properties of a lithium secondary battery can be improved by preventing deformation of a lattice structure and/or a crystal structure in the lithium-transition metal composite oxide particles.
    Type: Application
    Filed: April 25, 2023
    Publication date: November 9, 2023
    Inventors: Ji Yae DO, Jeong Bae YOON, Min Suk KANG, Hee Jun KWEON, Sang Bok KIM, Yong Hyun CHO, Dong Wook HA