Patents by Inventor Daechul Yoo

Daechul Yoo 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).

  • RF CHIP TO IMPROVE TRANSMIT CHANNEL FLATNESS
    Publication number: 20240120957
    Abstract: A radio-frequency (RF) chip includes a mixer configured to mix a local oscillation signal with a baseband signal to output an RF signal, an amplification stage configured to amplify the RF signal through a plurality of unit amplifiers operating in response to a first control signal, and a compensation capacitor bank provided between the mixer and the amplification stage. The compensation capacitor bank is configured to adjust a capacitance of the compensation capacitor bank based on a second control signal, the second control signal being complementary to the first control signal.
    Type: Application
    Filed: July 21, 2023
    Publication date: April 11, 2024
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Joonggeun LEE, Daechul JEONG, Jeongyeol BAE, Jongsoo LEE, Sangmin YOO
  • Electrode active material, lithium secondary battery containing the electrode active material, and method of preparing the electrode active material
    Patent number: 10892488
    Abstract: An electrode active material includes: a core active material having a layered structure and capable of reversibly incorporating and deincorporating lithium; a dopant including boron and a first metal element, wherein the dopant is in the core active material; and a nanostructure disposed on a surface of the core active material and including a metal borate compound including a second metal element, wherein the second metal element is the same as the first metal element.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: January 12, 2021
    Assignees: SAMSUNG ELECTRONICS CO., LTD., SAMSUNG SDI CO., LTD.
    Inventors: Dongjin Ham, Jayhyok Song, Donghee Yeon, Jinhwan Park, Daechul Yoo
  • ELECTRODE ACTIVE MATERIAL, LITHIUM SECONDARY BATTERY CONTAINING THE ELECTRODE ACTIVE MATERIAL, AND METHOD OF PREPARING THE ODE ACTIVE MATERIAL
    Publication number: 20180205084
    Abstract: An electrode active material includes: a core active material having a layered structure and capable of reversibly incorporating and deincorporating lithium; a dopant including boron and a first metal element, wherein the dopant is in the core active material; and a nanostructure disposed on a surface of the core active material and including a metal borate compound including a second metal element, wherein the second metal element is the same as the first metal element.
    Type: Application
    Filed: January 17, 2018
    Publication date: July 19, 2018
    Inventors: Dongjin Ham, Jayhyok Song, Donghee Yeon, Jinhwan Park, Daechul Yoo