Patents by Inventor Hyo-Chul KWAK

Hyo-Chul KWAK 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).

  • Cathode active material for lithium secondary battery and method of manufacturing the same
    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
  • METHOD AND APPARATUS FOR VEHICLE SPEED CORRECTION
    Publication number: 20230391348
    Abstract: A method that is performed by an apparatus for vehicle velocity correction, the method comprising: a process of calculating a relative velocity of a stationary target detected by a first sensor included in a vehicle, and a relative angle between a driving direction of the vehicle and a direction in which the stationary target is positioned; a process of creating statistical data about a relative velocity ratio for a plurality of stationary targets based on the relative velocity ratio between a relative velocity of the stationary target and an ego-vehicle speed detected by a second sensor included in the vehicle; and a process of correcting the ego-vehicle speed detected by the second sensor based on a velocity ratio corresponding to a peak on the statistical data.
    Type: Application
    Filed: November 21, 2022
    Publication date: December 7, 2023
    Applicant: HYUNDAI MOBIS CO., LTD.
    Inventors: Sung Hoon MOON, Hyo Chul KWAK
  • Apparatus and method for estimating channel in mobile communication system
    Patent number: 8554152
    Abstract: An apparatus and a method for estimating a channel in a mobile communication system are provided. The apparatus includes a channel estimation unit for determining a channel estimation value using a channel power for each of a plurality of fingers, and a noise estimation unit for selecting a scheme for estimating a thermal noise power according to a channel environment among schemes for determining a plurality of thermal noise powers, and for estimating a noise using the channel estimation value in the selected scheme.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: October 8, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyo-Chul Kwak, Myung-Kwang Byun, Yu-Suk Yun, Sung-Kwon Jo
  • APPARATUS AND METHOD FOR ESTIMATING CHANNEL IN MOBILE COMMUNICATION SYSTEM
    Publication number: 20110151802
    Abstract: An apparatus and a method for estimating a channel in a mobile communication system are provided. The apparatus includes a channel estimation unit for determining a channel estimation value using a channel power for each of a plurality of fingers, and a noise estimation unit for selecting a scheme for estimating a thermal noise power according to a channel environment among schemes for determining a plurality of thermal noise powers, and for estimating a noise using the channel estimation value in the selected scheme.
    Type: Application
    Filed: December 22, 2010
    Publication date: June 23, 2011
    Applicant: SAMSUNG ELECTRONICS CO. LTD.
    Inventors: Hyo-Chul KWAK, Myung-Kwang BYUN, Yu-Suk YUN, Sung-Kwon JO