Patents by Inventor Gi Hoon Choi

Gi Hoon 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).

  • Contactless-type metal card having an electromagnetic wave absorption sheet
    Patent number: 10699179
    Abstract: Provided is a contactless-type metal card with an electromagnetic wave absorption sheet. The contactless-type metal card may include: a metal body sheet made of a metal material; an antenna inlay sheet made of a synthetic resin material with an antenna mounted on one side thereof; an electromagnetic wave absorption sheet disposed between the metal body sheet and the antenna inlay sheet; an IC device for card mounted on the metal body sheet or the antenna inlay sheet and having terminals connected to two ends of the antenna; a first thermal adhesive sheet disposed between the metal body sheet and the electromagnetic wave absorption sheet; and a second thermal adhesive sheet disposed between the electromagnetic wave absorption sheet and the antenna inlay sheet. The electromagnetic wave absorption sheet is preferably formed by mixing a powder of materials having a property of absorbing an electromagnetic wave and a binder.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: June 30, 2020
    Assignee: BIOSMART CORPORATION
    Inventors: Tae Ki Yoon, Gi Hoon Choi