Patents by Inventor Hyun-Sun Chung

Hyun-Sun Chung 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: 11411636
    Abstract: Provided is an apparatus and method for wideband short-range wireless communication using a directional antenna in a millimeter wave band, and the method for wideband short-range wireless communication according to an embodiment may determine a first time interval and a second time interval for a cooperated data frame transfer based on a packet transmission time at each transmission from a source node to a destination node, transmit a frame to a relay node through an antenna pattern directed towards the relay node at a start point of the first time interval, and transmit the frame to the destination node through an antenna pattern directed towards the destination node after a predetermined period of time from a start point of the second time interval.
    Type: Grant
    Filed: September 15, 2020
    Date of Patent: August 9, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Kap Seok Chang, Hyoung Jin Kwon, Sung Geun Jin, Yong Sun Kim, Seung Eun Hong, Woo Yong Lee, Hyun Kyu Chung
  • Publication number: 20220241840
    Abstract: A wheel disc including a bolt hole for bolt fastening, includes a first region extending to have a predetermined width in a circumferential direction of the bolt hole and a second region, other than the first region, wherein the first region has an average tensile strength lower than that of the second region.
    Type: Application
    Filed: September 16, 2020
    Publication date: August 4, 2022
    Applicant: POSCO
    Inventors: Hong-Gee Kim, Hyun-Sung Son, Min-Sung Lee, Hyuk-Sun Kwon, Youn-Il Chung
  • Patent number: 6481864
    Abstract: A backlight assembly is disclosed having a light pipe and at least one light source located at an edge of the light pipe. The light pipe has a back surface and a front surface opposite the back surface. The light pipe also has one or more light directing, diffusing, turning, or brightness enhancing film layers adjacent the front surface. The light pipe also has an integral surface diffuser microstructure molded, embossed, or otherwise replicated in the front surface of the light pipe.
    Type: Grant
    Filed: January 12, 2001
    Date of Patent: November 19, 2002
    Assignee: Physical Optics Corporation
    Inventors: Abbas Hosseini, Hyun-Sun Chung, Anatoly Vasiliev, Gajendra D. Savant
  • Patent number: 6347873
    Abstract: A backlight assembly is disclosed having a light pipe and at least one light source located at an edge of the light pipe. The light pipe has a back surface and a front surface opposite the back surface. The light pipe also has one or more light directing, diffusing, turning, or brightness enhancing film layers adjacent the front surface. The light pipe also has an integral surface diffuser microstructure molded, embossed, or otherwise replicated in the front surface of the light pipe.
    Type: Grant
    Filed: July 8, 1999
    Date of Patent: February 19, 2002
    Assignee: Physical Optics Corporation
    Inventors: Abbas Hosseini, Hyun-Sun Chung, Anatoly Vasiliev, Gajendra D. Savant
  • Publication number: 20010001595
    Abstract: A backlight assembly is disclosed having a light pipe and at least one light source located at an edge of the light pipe. The light pipe has a back surface and a front surface opposite the back surface. The light pipe also has one or more light directing, diffusing, turning, or brightness enhancing film layers adjacent the front surface. The light pipe also has an integral surface diffuser microstructure molded, embossed, or otherwise replicated in the front surface of the light pipe.
    Type: Application
    Filed: January 12, 2001
    Publication date: May 24, 2001
    Applicant: Physical Optics Corporation
    Inventors: Abbas Hosseini, Hyun-Sun Chung, Anatoly Vasiliev, Gajendra D. Savant