Patents by Inventor Yong-Joo Choi

Yong-Joo Choi 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: 12239422
    Abstract: An apparatus for estimating biological information may include a sensor configured to detect a first light signal and a second light signal from an object of a user and a processor configured to determine whether a condition for estimating biological information is satisfied based on the detected first light signal and estimate biological information based on the second light signal, wherein the sensor includes a force sensor configured to measure a force applied to the object when the object is in contact with a cover surface of the sensor.
    Type: Grant
    Filed: June 16, 2021
    Date of Patent: March 4, 2025
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byung Hoon Ko, Yong Joo Kwon, Seung Woo Noh, Hyun Seok Moon, Sung Mo Ahn, Kun Sun Eom, Jong Wook Lee, Tak Hyung Lee, Myoung Hoon Jung, Chang Mok Choi
  • Patent number: 12235039
    Abstract: A refrigerator may include a storage compartment, an inner door which comprises an opening having a size corresponding to a size of the storage compartment, a plurality of door guards, and an outer door which open and close the storage compartment, wherein the inner door comprises a control unit may control an internal environment of the storage compartment.
    Type: Grant
    Filed: December 6, 2023
    Date of Patent: February 25, 2025
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyun Joo Kim, Yong Man Seo, In-Sung Hwang, Bok Hyun Jang, Tae Youl Lee, Jeong Won Choi
  • Patent number: 12206056
    Abstract: Provided is a method of fabricating a semiconductor package. The method of fabricating the semiconductor package include preparing a lower element including a lower substrate, a lower electrode, an UBM layer, and a reducing agent layer, providing an upper element including an upper substrate, an upper electrode, and a solder bump layer, providing a pressing member on the upper substrate to press the upper substrate to the lower substrate, and providing a laser beam passing through the pressing member to bond the upper element to the lower element.
    Type: Grant
    Filed: August 11, 2021
    Date of Patent: January 21, 2025
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kwang-Seong Choi, Yong Sung Eom, Jiho Joo, Gwang-Mun Choi, Seok-Hwan Moon, Chanmi Lee, Ki Seok Jang
  • Publication number: 20070144559
    Abstract: A unit for preventing a substrate from drying includes a transfer arm for transferring a substrate from a first bath containing a first cleaning solution to a second bath containing a second cleaning solution, a spraying part connected to the transfer arm, wherein the spraying part sprays a drying prevention solution from an upper portion of the substrate to a lower portion of the substrate, and a drainage container connected to the transfer arm, wherein the drainage container receives the drying prevention solution.
    Type: Application
    Filed: December 15, 2006
    Publication date: June 28, 2007
    Inventors: Kwang-Shin Lim, Sung-Jae Han, Yong-Hoon Lee, Hyung-Seok Choi, Ju-Ah Ryu, Yong-Joo Choi