Patents by Inventor Hyeon Chul Lim

Hyeon Chul Lim 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).

  • Magnetic sheet for radio frequency identification antenna, method of manufacturing the same, and radio frequency identification antenna using the same
    Patent number: 8268092
    Abstract: Provided are a magnetic sheet for use in a radio frequency identification (RFID) antenna, an RFID antenna including the magnetic sheet, and a method of manufacturing the magnetic sheet, in which the magnetic sheet includes an amorphous alloy selected from the group consisting of Fe—Si—B, Fe—Si—B—Cu—Nb, Fe—Zr—B and Co—Fe—Si—B. The magnetic sheet is made by laminating amorphous alloy ribbons made of an amorphous alloy between magnetic sheet layers formed of alloy powder including at least one amorphous alloy and then compression-molding the amorphous alloy ribbons, to thereby control microcrack of the amorphous alloy ribbons and enhance characteristic of an end-product. The magnetic sheet is also thin, and has an excellent magnetic permeability, and a simple manufacturing process.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: September 18, 2012
    Assignee: Amotech Co., Ltd.
    Inventors: Jae Suk Yang, Hyeon Chul Lim, Byoung Ki Lee, Yong Sup Lee, Yong Hyun Kim, Yong Sul Song, Sang Kyun Kwon, Beom Jin Kim
  • MAGNETIC SHEET FOR RADIO FREQUENCY IDENTIFICATION ANTENNA, METHOD OF MANUFACTURING THE SAME, AND RADIO FREQUENCY IDENTIFICATION ANTENNA USING THE SAME
    Publication number: 20100288418
    Abstract: Provided are a magnetic sheet for use in a radio frequency identification (RFID) antenna, an RFID antenna including the magnetic sheet, and a method of manufacturing the magnetic sheet, in which the magnetic sheet includes an amorphous alloy selected from the group consisting of Fe—Si—B, Fe—Si—B—Cu—Nb, Fe—Zr—B and Co—Fe—Si—B. The magnetic sheet is made by laminating amorphous alloy ribbons made of an amorphous alloy between magnetic sheet layers formed of alloy powder including at least one amorphous alloy and then compression-molding the amorphous alloy ribbons, to thereby control microcrack of the amorphous alloy ribbons and enhance characteristic of an end-product. The magnetic sheet is also thin, and has an excellent magnetic permeability, and a simple manufacturing process.
    Type: Application
    Filed: July 22, 2010
    Publication date: November 18, 2010
    Applicant: AMOTECH CO., LTD.
    Inventors: JAE SUK YANG, HYEON CHUL LIM, BYOUNG KI LEE, YONG SUP LEE, YONG HYUN KIM, YONG SUL SONG, SANG KYUN KWON, BEOM JIN KIM