Patents by Inventor Jin Wook Koo

Jin Wook Koo 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 core for inductor
    Patent number: 6897754
    Abstract: Disclosed is a low-priced and small-sized magnetic core for an inductor suitable for a high frequency signal and a large-current signal. The magnetic core is modified from a conventional EP type magnetic core. A recess is integrally formed with a peripheral portion of the magnetic core when it is shaped. A bottom portion and the peripheral portion are extended toward an opening portion to an extent of about 70 percentages of a length measured from a center of the center portion to an internal surface of the peripheral portion. The peripheral portion opposite to the opening portion has a uniform thickness. The magnetic core is designed to facilitate its surface mounting onto a PCB.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: May 24, 2005
    Assignees: Pulsus Technologies Inc., Korea Coil Engineering Co. Ltd.
    Inventors: Bong Soo Jeong, Michio Ishikawa, Jin Wook Koo
  • Magnetic core for inductor
    Publication number: 20030020580
    Abstract: Disclosed is a low-priced and small-sized magnetic core for an inductor suitable for a high frequency signal and a large-current signal. The magnetic core is modified from a conventional EP type magnetic core. A recess is integrally formed with a peripheral portion of the magnetic core when it is shaped. A bottom portion and the peripheral portion are extended toward an opening portion to an extent of about 70 percentages of a length measured from a center of the center portion to an internal surface of the peripheral portion. The peripheral portion opposite to the opening portion has a uniform thickness. The magnetic core is designed to facilitate its surface mounting onto a PCB.
    Type: Application
    Filed: June 5, 2002
    Publication date: January 30, 2003
    Applicant: Pulsus Technologies Inc.
    Inventors: Bong Soo Jeong, Michio Ishikawa, Jin Wook Koo