Patents by Inventor Takeo Ohaga

Takeo Ohaga 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: 11848145
    Abstract: A coil includes a winding section that are formed by winding a conductive wire having an insulating cover and a pair of opposite principal surfaces into an upper stage and a lower stage that are connected to each other by an innermost turn of the conductive wire that serves as a transition section while both ends of the conductive wire are located at an outermost turn of the conductive wire. The coil also includes a pair of lead-out portions that are taken from respective outermost turns of the upper stage and the lower stage and that continue to respective ends of the conductive wire. In the coil, at least part of the transition section includes a widened portion, and a width of the widened portion of the conductive wire is greater than a width of the conductive wire at a position other than the widened portion.
    Type: Grant
    Filed: October 9, 2020
    Date of Patent: December 19, 2023
    Assignee: Murata Manufacturing Co., Ltd.
    Inventor: Takeo Ohaga
  • Publication number: 20230207187
    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: Application
    Filed: March 7, 2023
    Publication date: June 29, 2023
    Applicant: Murate Manufacturing Co., Ltd.
    Inventors: Yuki Kitashima, Masaki Kitajima, Takeo Ohaga, Takeshi Shimada, Yoshiaki Hirama, Daigo Mizumura, Ryota Watanabe, Masato Koike, Yuusuke Morita
  • Patent number: 11657955
    Abstract: A surface mount inductor includes a coil including a conducting wire winding portion with both ends on the outer circumference and a pair of extension portions that extend from the outer circumference, a molded body containing a metal magnetic powder and the coil embedded, and a pair of outer terminals disposed on the molded body and connected to the extension portions. The molded body has principal surfaces, end surfaces, and side surfaces. One principal surface serves as a mounting surface including a recessed portion with an elevated region and a lowered region. The coil is embedded in the molded body with the winding axis of the winding portion parallel to the recessed portion, and the pair of extension portions extend from the outer circumference toward the mounting surface to be exposed at the lowered region and connected to the pair of outer terminals in the lowered region.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: May 23, 2023
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Ryota Watanabe, Masaki Kitajima, Takeo Ohaga
  • Publication number: 20210110964
    Abstract: A coil includes a winding section that are formed by winding a conductive wire having an insulating cover and a pair of opposite principal surfaces into an upper stage and a lower stage that are connected to each other by an innermost turn of the conductive wire that serves as a transition section while both ends of the conductive wire are located at an outermost turn of the conductive wire. The coil also includes a pair of lead-out portions that are taken from respective outermost turns of the upper stage and the lower stage and that continue to respective ends of the conductive wire. In the coil, at least part of the transition section includes a widened portion, and a width of the widened portion of the conductive wire is greater than a width of the conductive wire at a position other than the widened portion.
    Type: Application
    Filed: October 9, 2020
    Publication date: April 15, 2021
    Applicant: Murata Manufacturing Co., Ltd.
    Inventor: Takeo OHAGA
  • Publication number: 20210043362
    Abstract: An inductor that includes a coil having a winding portion in which a conductor having a coating layer is wound, and a pair of lead-out portions formed by leading out the conductor from the winding portion; and a magnetic portion including magnetic powder and resin and configured to seal the coil. The magnetic powder includes first particles having a first average particle diameter, and second particles having a second average particle diameter smaller than the first average particle diameter, and a thickness of the coating layer has a value larger than the second average particle diameter.
    Type: Application
    Filed: August 6, 2020
    Publication date: February 11, 2021
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Yasutaka MIZUKOSHI, Takeo OHAGA, Masaki KITAJIMA
  • Publication number: 20190311841
    Abstract: A surface mount inductor includes a coil including a conducting wire winding portion with both ends on the outer circumference and a pair of extension portions that extend from the outer circumference, a molded body containing a metal magnetic powder and the coil embedded, and a pair of outer terminals disposed on the molded body and connected to the extension portions. The molded body has principal surfaces, end surfaces, and side surfaces. One principal surface serves as a mounting surface including a recessed portion with an elevated region and a lowered region. The coil is embedded in the molded body with the winding axis of the winding portion parallel to the recessed portion, and the pair of extension portions extend from the outer circumference toward the mounting surface to be exposed at the lowered region and connected to the pair of outer terminals in the lowered region.
    Type: Application
    Filed: April 2, 2019
    Publication date: October 10, 2019
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Ryota WATANABE, Masaki KITAJIMA, Takeo OHAGA
  • Publication number: 20190304665
    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: Application
    Filed: January 31, 2019
    Publication date: October 3, 2019
    Applicant: 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: 10224144
    Abstract: A surface-mount inductor including: a coil formed by winding insulated wire and bringing out lead ends therefrom; and a plurality of premolded bodies for accommodating the coil inside, thereby thermopressing to form, wherein a pair of metal terminals is embedded laterally on the outer surface of the surface-mount inductor, and the lead ends of the coil are brought out from the bottom surface of the surface-mount inductor and laterally laid on the outer surface of the metal terminals, as well as a method for manufacturing the same.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: March 5, 2019
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Ryota Watanabe, Takeo Ohaga, Hiroyasu Mori, Yasutaka Mizukoshi, Takumi Arai, Masaaki Totsuka, Kunio Sasamori
  • Publication number: 20160181014
    Abstract: A surface-mount inductor including: a coil formed by winding insulated wire and bringing out lead ends therefrom; and a plurality of premolded bodies for accommodating the coil inside, thereby thermopressing to form, wherein a pair of metal terminals is embedded laterally on the outer surface of the surface-mount inductor, and the lead ends of the coil are brought out from the bottom surface of the surface-mount inductor and laterally laid on the outer surface of the metal terminals, as well as a method for manufacturing the same.
    Type: Application
    Filed: December 17, 2015
    Publication date: June 23, 2016
    Inventors: Ryota WATANABE, Takeo OHAGA, Hiroyasu MORI, Yasutaka MIZUKOSHI, Takumi ARAI, Masaaki TOTSUKA, Kunio SASAMORI
  • Publication number: 20150116070
    Abstract: A coil component containing a drum core having a winding column, and an upper flange and a lower flange at both ends of the winding column, and a conductive wire wound around the winding column, a ring-type core having a through-hole accommodate the drum core in the through-hole, a pair of metal terminals arranged at outer side surfaces of the ring-type core; wherein each of the metal terminals includes: a side surface portion arranged to face the side surfaces of the ring-type core; a top surface portion bent away from the side surface to the top surface of the core; and a bottom surface portion bent away from the side surface portion to bottom surface of the core; the top surface portion has a pair of claws extending toward the center of the through-hole, the claws being bent toward the inside surface of the through-hole.
    Type: Application
    Filed: October 31, 2014
    Publication date: April 30, 2015
    Inventors: Takumi ARAI, Yasutaka MIZUKOSHI, Takeo OHAGA, Ryota WATANABE
  • Publication number: 20140285301
    Abstract: A surface mount inductor including a drum core having a pair of flanges at both ends of a winding shaft thereof, a winding formed by winding an insulation-coated wire around the winding shaft, and a pair of plate-like metal terminals arranged on a flange surface of the drum core and each having a protrusion part protruding from a perimeter of the flange, wherein terminals of the winding are tied around the protrusion parts, the protrusion parts are compressed in a vertical direction and formed to have a predetermined height-direction dimension, and tied parts are immersed in a solder bath to be subjected to connection processing.
    Type: Application
    Filed: March 18, 2014
    Publication date: September 25, 2014
    Applicant: TOKO, INC.
    Inventors: Takumi ARAI, Takeo OHAGA, Yasutaka MIZUKOSHI, Masaaki TOTSUKA, Kunio SASAMORI
  • Publication number: 20130307657
    Abstract: A surface mount inductor includes: a drum core including a spool having an upper collar and a lower collar; a coil wound around the drum core; and a ring core arranged on the drum core, wherein the metal terminals include first and second tongues projecting to an outer periphery of the lower collar, the ring core includes convex sections projecting to a lower surface from an edge, side surfaces of the first tongue and the second tongue sandwich side surfaces of the convex sections, and tip sections of the first tongue and the second tongue fix the ring core from below.
    Type: Application
    Filed: May 8, 2013
    Publication date: November 21, 2013
    Inventors: Takeo OHAGA, Masaaki TOTSUKA, Kunio SASAMORI
  • Patent number: 8438720
    Abstract: A coil component, in which a space on an outer periphery of a winding interposed between a pair of flange portion is coated with a resin with magnetic powder, has a problem of long-term reliability that a thermosetting resin expands and contracts due to change in a temperature and the flange portions are fatigued to be broken. An object of the present invention is to provide the coil component of which core is hardly broken even when the resin with magnetic powder expands and contracts and a method of manufacturing the same.
    Type: Grant
    Filed: May 25, 2011
    Date of Patent: May 14, 2013
    Assignee: Toko, Inc.
    Inventors: Keita Muneuchi, Yusuke Kito, Takeo Ohaga, Hisashi Yano
  • Publication number: 20110309906
    Abstract: A coil component, in which a space on an outer periphery of a winding interposed between a pair of flange portion is coated with a resin with magnetic powder, has a problem of long-term reliability that a thermosetting resin expands and contracts due to change in a temperature and the flange portions are fatigued to be broken. An object of the present invention is to provide the coil component of which core is hardly broken even when the resin with magnetic powder expands and contracts and a method of manufacturing the same.
    Type: Application
    Filed: May 25, 2011
    Publication date: December 22, 2011
    Inventors: Keita Muneuchi, Yusuke Kito, Takeo Ohaga, Hisashi Yano