Patents by Inventor Hyun-sang Lee

Hyun-sang 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: 12226845
    Abstract: An apparatus and method for cleaning an oxide film using a direct current reverse polarity are provided. The apparatus for cleaning an oxide film formed on a workpiece may include a power supply configured to apply direct current power and to include a positive electrode terminal and a negative electrode terminal, the workpiece configured to be electrically connected to the negative electrode terminal to act as a negative electrode to which a current is applied, and a torch having a positive electrode, which is spaced apart from the oxide film by a predetermined distance and is electrically connected to the positive electrode terminal, the torch being installed to be movable relative to the workpiece. The oxide film formed on the workpiece may be removed by applying a reverse polarity direct current between the workpiece, serving as the negative electrode, and the positive electrode to generate an arc.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: February 18, 2025
    Assignees: DOOSAN ENERBILITY CO., LTD., PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
    Inventors: Yoon Sang Lee, Hyun Sang Kong, Jae Yun Shin, Sang Myung Cho, Hyo Jin Baek, Chang Ik Lee, Hyeong Chang Ryu, Kyeong Seob Lim
  • Publication number: 20240380040
    Abstract: Disclosed is a battery cell, which includes an electrode assembly including a cell body and an electrode tab provided to at least one side of the cell body, a cell case configured to accommodate the electrode assembly therein, an electrode lead coupled to the electrode tab and extending from the cell case, and a tab protection module accommodated in the cell case and configured to cover at least a portion of the electrode tab, the tab protection module including a lead positioning guide and a corresponding positioning guide insert portion adapted to receive the positioning guide insert portion, wherein the positioning guide insert portion is configured to couple to the electrode lead to guide a position of the electrode lead relative to the cell case.
    Type: Application
    Filed: July 25, 2024
    Publication date: November 14, 2024
    Applicant: LG Energy Solution, Ltd.
    Inventors: Kyoung-Soon Yoon, Seok-Je Kim, Yong-Tae Lee, Hyun-Sang Lee
  • Publication number: 20230291041
    Abstract: Disclosed is a battery cell, which includes an electrode assembly including a cell body and an electrode tab provided to at least one side of the cell body, a cell case configured to accommodate the electrode assembly therein, an electrode lead coupled to the electrode tab and extending from the cell case, and a tab protection module accommodated in the cell case and configured to cover at least a portion of the electrode tab, the tab protection module including a lead positioning guide and a corresponding positioning guide insert portion adapted to receive the positioning guide insert portion, wherein the positioning guide insert portion is configured to couple to the electrode lead to guide a position of the electrode lead relative to the cell case.
    Type: Application
    Filed: October 11, 2022
    Publication date: September 14, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Kyoung-Soon Yoon, Seok-Je Kim, Yong-Tae Lee, Hyun-Sang Lee
  • Publication number: 20230170590
    Abstract: Disclosed is a battery cell having an electrode tab with an enhanced safety, and a battery module, a battery pack and a vehicle including the same. The battery cell includes an electrode assembly including a cell body and an electrode tab provided to at least one of both sides of the cell body, a cell case configured to accommodate the electrode assembly therein, an electrode lead drawn out of the cell case by a predetermined length and connected to the electrode assembly through the electrode tab, and a tab protection module accommodated in the cell case and configured to cover at least a part of the electrode tab.
    Type: Application
    Filed: August 30, 2022
    Publication date: June 1, 2023
    Applicant: LG Energy Solution, Ltd.
    Inventors: Kyoung-Soon Yoon, Myung-Hoon Ko, Dong-Myung Kim, Seok-Je Kim, Seung-Byung Lee, Yong-Tae Lee, Hyun-Sang Lee
  • Publication number: 20180318135
    Abstract: A notification service provision method for a hearing-impaired person executed on a notification service provision device for a hearing-impaired person, according to one embodiment of the present invention, comprises the steps of: checking whether the sensitivity of a sound received from a surrounding area through each of sound detection modules is equivalent to or greater than a preset vibration generation reference sensitivity; if, as a result of the checking, the sensitivity of the sound received through each of the sound detection modules is equivalent to or greater than the preset vibration generation reference sensitivity, calculating the sensitivity gap of the sound received through each of the sound detection modules; and according to the sound sensitivity gap, notifying a hearing-impaired person of the fact that a sound has occurred by operating at least one of vibration generation modules.
    Type: Application
    Filed: March 8, 2016
    Publication date: November 8, 2018
    Inventor: Hyun Sang LEE
  • Publication number: 20170117004
    Abstract: According to an embodiment of the present disclosure, a method for providing a notification through a sound alerting apparatus comprises determining whether sensitivities of ambient sounds respectively received through sound sensors are a preset vibration reference sensitivity or higher, calculating a gap between the sensitivities when the sensitivities are the preset vibration reference sensitivity or higher, and operate at least one of vibration generators according to the gap to alert a user to a sound occurrence.
    Type: Application
    Filed: October 20, 2016
    Publication date: April 27, 2017
    Inventor: Hyun Sang LEE
  • Publication number: 20120237582
    Abstract: Provided are a method of preparing a silica powder coated with an antibacterial agent and a topical dermatological composition including the silica powder, and more particularly, a method of preparing a silica powder coated with an antibacterial agent by forming a silica particle by inducing a reaction between silicon alkoxide and alcohol solvent in the presence of a catalyst and then forming an silver and metallic coating layer on the silica particle, and a method of preparing a topical dermatological composition including the silica powder. The silica powder coated with the antibacterial agent may have high antibacterial capability, and thus, topical dermatological products including the silica powder may be maintained for a long time without using a chemical antiseptic agent that may irritate the skin and cause an allergy in the human body. Even if a small amount of expensive silver (Ag) ion material is used, the silica powder has excellent antibacterial capability and stability.
    Type: Application
    Filed: December 11, 2009
    Publication date: September 20, 2012
    Applicant: ACT CO., LTD.
    Inventors: Youn-kyung Do, Yun-jeong Kim, Ji-hyun Son, Hyun-sang Lee, Jong-woo Cheon