Patents by Inventor Yoshiaki Kitajima

Yoshiaki Kitajima 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: 11929201
    Abstract: A surface mount inductor includes a coil including a wound portion and a feeder end portion drawn out from the wound portion, a compact that contains a magnetic powder and that encapsulates the coil, and an external terminal disposed on the compact and connected to the coil. The compact has surfaces including two pressed surfaces, opposing each other in a direction of an axis of the wound portion and formed by being pressed in the direction of the axis, and a non-pressed surface, adjacent to the two surfaces and not pressed. The coil is disposed so that the axis of the wound portion is parallel to a mount surface of the compact. The mount surface is included in the non-pressed surface, the feeder end portion is exposed from the mount surface, and the external terminal is formed on only the non-pressed surface and connected to the feeder end portion.
    Type: Grant
    Filed: March 7, 2023
    Date of Patent: March 12, 2024
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Yuki Kitashima, Masaki Kitajima, Takeo Ohaga, Takeshi Shimada, Yoshiaki Hirama, Daigo Mizumura, Ryota Watanabe, Masato Koike, Yuusuke Morita
  • Patent number: 8112872
    Abstract: A coil component having an easily discernible orientation, and a method of producing such a coil component that facilitates the injection of resin. A coil component includes a core with a winding portion, first and second flanges disposed on either end of the winding portion, and a winding accommodating region defined by the winding portion and the first and second flanges, terminal electrodes disposed on the second flange and a winding wound about the winding portion and connected to the terminal electrodes. An insulating resin is formed over the winding at the winding accommodating region. A marker made from a material the same as the insulating resin is provided at outer peripheral surface of the flanges.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: February 14, 2012
    Assignee: TDK Corporation
    Inventors: Shinichi Sato, Satoshi Kurimoto, Makoto Morita, Akira Takashima, Sumio Takahashi, Yoshiaki Kitajima
  • Patent number: 8013704
    Abstract: A coil component comprises: a core having a winding core portion, and a first flange and a second flange arranged at both ends of the winding core portion; a winding arranged in a region flanked by the first and second flanges, and wound so as to be in contact with the winding core portion; and a cover portion arranged in a region flanked by the first and second flanges, so as to cover the winding. The cover portion has a first cover portion comprising a resin cured product containing a magnetic material; and a second cover portion comprising a non-magnetic material. The second cover portion is interposed at least between the first flange and the first cover portion.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: September 6, 2011
    Assignee: TDK Corporation
    Inventors: Yoshiaki Kitajima, Masatoshi Shindoh
  • Publication number: 20110115592
    Abstract: A coil component comprises: a core having a winding core portion, and a first flange and a second flange arranged at both ends of the winding core portion; a winding arranged in a region flanked by the first and second flanges, and wound so as to be in contact with the winding core portion; and a cover portion arranged in a region flanked by the first and second flanges, so as to cover the winding. The cover portion has a first cover portion comprising a resin cured product containing a magnetic material; and a second cover portion comprising a non-magnetic material. The second cover portion is interposed at least between the first flange and the first cover portion.
    Type: Application
    Filed: January 26, 2011
    Publication date: May 19, 2011
    Applicant: TDK CORPORATION
    Inventors: Yoshiaki KITAJIMA, Masatoshi Shindoh
  • Patent number: 7898375
    Abstract: A coil component comprises: a core having a winding core portion, and a first flange and a second flange arranged at both ends of the winding core portion; a winding arranged in a region flanked by the first and second flanges, and wound so as to be in contact with the winding core portion; and a cover portion arranged in a region flanked by the first and second flanges, so as to cover the winding. The cover portion has a first cover portion comprising a resin cured product containing a magnetic material; and a second cover portion comprising a non-magnetic material. The second cover portion is interposed at least between the first flange and the first cover portion.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: March 1, 2011
    Assignee: TDK Corporation
    Inventors: Yoshiaki Kitajima, Masatoshi Shindoh
  • Patent number: 7714690
    Abstract: A coil component has a first coil part and a second coil part, a middle member, and a shield member. Each of the first and second coil parts includes a drum core and a winding. The middle member is located between the first and second coil parts arranged in a state in which axes of winding drums in the respective first and second coil parts are parallel to each other. The shield member is formed at least in part of an outside surface of the winding in each of the first and second coil parts and is a resin containing a magnetic material powder. The magnetic permeability of the middle member is lower than that of the core and the shield member.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: May 11, 2010
    Assignee: TDK Corporation
    Inventors: Atsushi Shoji, Masatoshi Shindoh, Yoshiaki Kitajima
  • Publication number: 20090315659
    Abstract: A coil component having an easily discernible orientation, and a method of producing such a coil component that facilitates the injection of resin. A coil component includes a core with a winding portion, first and second flanges disposed on either end of the winding portion, and a winding accommodating region defined by the winding portion and the first and second flanges, terminal electrodes disposed on the second flange and a winding wound about the winding portion and connected to the terminal electrodes. An insulating resin is formed over the winding at the winding accommodating region. A marker made from a material the same as the insulating resin is provided at outer peripheral surface of the flanges.
    Type: Application
    Filed: June 24, 2008
    Publication date: December 24, 2009
    Applicant: TDK CORPORATION
    Inventors: Shinichi Sato, Satoshi Kurimoto, Makoto Morita, Akira Takashima, Sumio Takahashi, Yoshiaki Kitajima
  • Patent number: 7515028
    Abstract: A coil component having a low profile and being conducive to high-density mounting. The coil component includes a core 2 having a coil winding portion, and first and second flanges disposed on either end of the coil winding portion. The second flange is adapted to be mounted on a circuit board, and is configured of a substantially octagonal bottom surface having first and second peripheral surfaces and first through fourth omitted peripheral surfaces. The first terminal electrode is disposed across the first omitted peripheral surface and a part of the bottom surface, and the second terminal electrode is disposed across the second omitted peripheral surface and part of the bottom surface separated from the first terminal electrode. A winding is wound over the coil winding portion and has a first end electrically connected to the first terminal electrode at the first omitted peripheral surface, and a second end electrically connected to the second terminal electrode at the second omitted peripheral surface.
    Type: Grant
    Filed: June 24, 2008
    Date of Patent: April 7, 2009
    Assignee: TDK Corporation
    Inventors: Shinichi Sato, Satoshi Kurimoto, Makoto Morita, Akira Takashima, Sumio Takahashi, Yoshiaki Kitajima
  • Publication number: 20080252406
    Abstract: A coil component comprises: a core having a winding core portion, and a first flange and a second flange arranged at both ends of the winding core portion; a winding arranged in a region flanked by the first and second flanges, and wound so as to be in contact with the winding core portion; and a cover portion arranged in a region flanked by the first and second flanges, so as to cover the winding. The cover portion has a first cover portion comprising a resin cured product containing a magnetic material; and a second cover portion comprising a non-magnetic material. The second cover portion is interposed at least between the first flange and the first cover portion.
    Type: Application
    Filed: March 13, 2008
    Publication date: October 16, 2008
    Applicant: TDK CORPORATION
    Inventors: Yoshiaki Kitajima, Masatoshi Shindoh
  • Publication number: 20080179445
    Abstract: A coil component has a first coil part and a second coil part, a middle member, and a shield member. Each of the first and second coil parts includes a drum core and a winding. The middle member is located between the first and second coil parts arranged in a state in which axes of winding drums in the respective first and second coil parts are parallel to each other. The shield member is formed at least in part of an outside surface of the winding in each of the first and second coil parts and is a resin containing a magnetic material powder. The magnetic permeability of the middle member is lower than that of the core and the shield member.
    Type: Application
    Filed: January 22, 2008
    Publication date: July 31, 2008
    Applicant: TDK CORPORATION
    Inventors: Atsushi Shoji, Masatoshi Shindoh, Yoshiaki Kitajima
  • Patent number: D596563
    Type: Grant
    Filed: March 10, 2008
    Date of Patent: July 21, 2009
    Assignee: TDK Corporation
    Inventors: Yoshiaki Kitajima, Atsushi Shoji, Masatoshi Shindoh