Patents by Inventor Hanju Lee

Hanju Lee 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: 11973431
    Abstract: A detector compares a drain voltage with a first threshold voltage and outputs a first detection signal. An ON-counter detects a period of time during which current flows in a switching circuit based on the first detection signal, counts the period of time based on a predetermined clock cycle, and outputs an ON-count value. A first comparator receives the ON-count value and an ON-threshold value and outputs a first comparison signal when the ON-count value and the ON-threshold value match. A second comparator receives the ON-count value and a decreased ON threshold value, compares the ON-count value and the decreased ON-threshold value, and outputs a second comparison signal. An ON-mask time adjuster receives the second comparison signal and outputs an ON-threshold value for adjusting a mask time and a decreased ON-threshold value that is less than the ON threshold value.
    Type: Grant
    Filed: April 7, 2022
    Date of Patent: April 30, 2024
    Assignees: SANKEN ELECTRIC CO., LTD., SANKEN ELECTRIC KOREA CO., LTD.
    Inventors: Eunsuk Lee, Kyusam Choi, Jaekuk Yu, Shinji Aso, Mitsutomo Yoshinaga, Hanju Kang
  • Publication number: 20230237184
    Abstract: A storage device for performing an access authority control and an operating method thereof are disclosed. The storage device including processing circuitry configured to store a plurality of security information associated with the plurality of namespaces in response to a command from the host, each of the security information including virtual machine information associated with a corresponding one of the plurality of virtual machines and unique information associated with the corresponding virtual machine, the virtual machine information including an identifier for the corresponding virtual machine, and the unique information including unique information uniquely set for the corresponding virtual machine, extract at least first information by decoding a data access request received from the host device, and abort processing of the data access request based on the security information and the extracted at least one first information.
    Type: Application
    Filed: November 21, 2022
    Publication date: July 27, 2023
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Yeonwoo SHIN, Hanju LEE, Seonbong KIM, Seungmoon WOO, Yongho SONG, Kwanghee CHOI
  • Patent number: 10274743
    Abstract: An imaging system includes an indicator installed around an antenna, wherein optical characteristics of the indicator change as a function of an electromagnetic field formed by the antenna, an imaging apparatus for imaging a change in optical characteristics of the indicator, a transmitter for radiating radio waves toward the antenna, and a receiver for receiving a signal from the antenna.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: April 30, 2019
    Assignees: Hyundai Motor Company, Sogang University Research Foundation
    Inventors: Sang Heun Lee, Sung-Hoon Jeon, Hanju Lee, Hyun-Wook Jang, Kiejin Lee, Do-Suck Han
  • Publication number: 20180091239
    Abstract: An imaging system includes an indicator installed around an antenna, wherein optical characteristics of the indicator change as a function of an electromagnetic field formed by the antenna, an imaging apparatus for imaging a change in optical characteristics of the indicator, a transmitter for radiating radio waves toward the antenna, and a receiver for receiving a signal from the antenna.
    Type: Application
    Filed: December 20, 2016
    Publication date: March 29, 2018
    Inventors: Sang Heun LEE, Sung-Hoon JEON, Hanju LEE, Hyun-Wook JANG, Kiejin LEE, Do-Suck HAN
  • Patent number: 3953587
    Abstract: Certain zeolite materials have been found to be effective zeolite adsorbents-catalysts for the adsorption and conversion of sulfuric compounds to elemental sulfur. These zeolites adsorb hydrogen sulfide and sulfur oxides and promote the reaction of these materials so as to produce sulfur. These useful zeolites are the hydrogen forms of the zeolite materials and sodium exchanged hydrogen zeolites, especially mordenite. These zeolite adsorbents-catalysts are very useful for the removal of small amounts of hydrogen sulfide and sulfurous oxide from effluent streams such as effluent streams from Claus reactors.
    Type: Grant
    Filed: November 27, 1974
    Date of Patent: April 27, 1976
    Assignee: W. R. Grace & Co.
    Inventors: Hanju Lee, Chang Whan Chi