Patents by Inventor Sang Han Yoon

Sang Han Yoon 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 lithium secondary battery including the same
    Patent number: 11990615
    Abstract: A cathode active material for a lithium secondary battery includes a lithium-transition metal composite oxide particle having a lattice strain (?) of 0.18 or less, which is calculated by applying Williamson-Hall method defined by Equation 1 to XRD peaks measured through XRD analysis, and having an XRD peak intensity ratio of 8.9% or less, which is defined by Equation 2. By controlling the lattice strain and XRD peak intensity ratio of the lithium-transition metal composite oxide particle, a lithium secondary battery with improved life-span characteristics as well as output characteristics is provided.
    Type: Grant
    Filed: March 7, 2023
    Date of Patent: May 21, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Sang Han Lee, Min Gu Kang, Jeong Bae Yoon, Yong Hyun Cho
  • Apparatus for compensating for image display characteristics
    Patent number: 5757438
    Abstract: An image compensation system and methods for video appliances to reproduce an optimum image, by judging exterior environment and by compensating for an original image by the judged exterior environment. According to the system and methods, a color sensor senses color of exterior lighting of an appliance, and provides electrical signals corresponding to color components of the sensed color. The signals are converted into a digital value by an analog-to-digital converter. A microprocessor judges the type of exterior lighting, by the digitized values, and searches for image compensation data according to the judged exterior lighting. It thereby makes a video processor compensate for an original image signal.
    Type: Grant
    Filed: November 4, 1996
    Date of Patent: May 26, 1998
    Assignee: LG Electronics Inc.
    Inventors: Sang Han Yoon, Young Ho Ha
  • Image processing system for adjusting the image characteristics of a display system
    Patent number: 5642172
    Abstract: An image compensation system and methods for video appliances to reproduce an optimum image, by the judged exterior environment and by compensating for an original image by judging exterior environment. According to the system and methods, a color sensor senses color of exterior lighting of an appliance, and provides electrical signals corresponding to color components of the sensed color. The signals are converted into a digital value by an analog-to-digital converter. A microprocessor judges the type of exterior lighting, by the digitized values, and searches for image compensation data according to the judged exterior lighting. It thereby makes a video processor compensate for an original image signal.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: June 24, 1997
    Assignee: LG Electronics Inc.
    Inventors: Sang Han Yoon, Yeoung Ho Ha