Patents by Inventor Koichi Hosoya

Koichi Hosoya 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: 6700751
    Abstract: A plurality of magnetoresistive heads are arranged on a wafer substrate. A plurality of electrode pads are arranged on the wafer substrate in a first direction. Each electrode pad is connected to an associated magnetoresistive head. Respective adjacent electrode pads are shifted from each other in a second direction perpendicular to the first direction. The shifted amount of the adjacent pads in the second direction is larger than a dimension of the electrode pad in the second direction.
    Type: Grant
    Filed: April 25, 2001
    Date of Patent: March 2, 2004
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Satoshi Ajiki, Hiroaki Tobitsuka, Koichi Hosoya
  • Patent number: 6683751
    Abstract: A plurality of magnetic head elements, each having a terminal portion, are arranged on a first face of the head chip. A wiring board member is electrically connected to the respective terminal portions of the magnetic head elements. A pair of side chips sandwich the head chip from both sides of the first face. Each of the side chips has faces forming a recessed portion which faces with at least the terminal portions of the magnetic head elements.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: January 27, 2004
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Hiroaki Tobitsuka, Koichi Hosoya
  • Patent number: 6671137
    Abstract: In a magnetoresistive head, a first non-magnetic layer is formed on a first shield layer. A magnetoresistive element includes a magnetoresistive film and an electrode portion both formed on the first non-magnetic layer. A second non-magnetic layer is formed on the magnetoresistive element. A second shield layer is formed on the second non-magnetic layer. A non-magnetic metal layer electrically connects the first and the second shield layers. A first earth member is electrically connected to the electrode portion of the magnetoresistive element. A second earth member is electrically connected to the first and the second shield layers. A third earth member is electrically connected to the first earth member and the second earth member.
    Type: Grant
    Filed: September 20, 2001
    Date of Patent: December 30, 2003
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Satoshi Ajiki, Koichi Hosoya
  • Patent number: 6563675
    Abstract: A pattern of lead terminals 22 is formed on a side face of a head body 4 provided with reproduction magnetic heads 9 each being formed with a magnetic gap 11 for reproducing at least an information signal, etc., recorded on a magnetic recording medium, and a preamplifier 6 for amplifying reproduction output detected by the magnetic gap 11 via the lead terminal 22 is mounted directly on the side face of the head body 4.
    Type: Grant
    Filed: August 24, 2000
    Date of Patent: May 13, 2003
    Assignee: Mitsumi Electric Co., Ltd.
    Inventors: Yasuhiko Shinjo, Tsuyoshi Ishii, Satoshi Ajiki, Koichi Hosoya
  • Publication number: 20020176213
    Abstract: A non-magnetic layer is integrated with a magnetoresistive element to form a scanning surface which is slid on a magnetic recording medium. The non-magnetic layer made of a material having a hardness higher than a hardness of Al2O3. Such hardness is represented by a Vickers hardness in a range of 8 GPa to 18 GPa.
    Type: Application
    Filed: May 22, 2002
    Publication date: November 28, 2002
    Inventors: Satoshi Ajiki, Koichi Hosoya
  • Publication number: 20020057539
    Abstract: A magnetoresistive element is formed by laminating a soft magnetic bias gap layer, a soft magnetic bias layer, a magnetic separation layer, a magnetoresistive layer and a magnetoresistive gap layer, so as to define a sliding surface on which a tape-shaped magnetic recording medium is slid. An upper shield layer and a lower shield layer vertically sandwich the magnetoresistive element therebetween. A vertically stepped portion is provided on each of the upper or the lower shield layer and the respective layers forming the magnetoresistive element, so as to extend horizontally in a track width direction of the sliding surface.
    Type: Application
    Filed: August 24, 2001
    Publication date: May 16, 2002
    Inventors: Satoshi Ajiki, Koichi Hosoya
  • Publication number: 20020041466
    Abstract: A plurality of magnetic head elements, each having a terminal portion, are arranged on a first face of the head chip. A wiring board member is electrically connected to the respective terminal portions of the magnetic head elements. A pair of side chips sandwich the head chip from both sides of the first face. Each of the side chips has faces forming a recessed portion which faces with at least the terminal portions of the magnetic head elements.
    Type: Application
    Filed: September 18, 2001
    Publication date: April 11, 2002
    Inventors: Hiroaki Tobitsuka, Koichi Hosoya
  • Publication number: 20020036875
    Abstract: In a magnetoresistive head, a first non-magnetic layer is formed on a first shield layer. A magnetoresistive element includes a magnetoresistive film and an electrode portion both formed on the first non-magnetic layer. A second non-magnetic layer is formed on the magnetoresistive element. A second shield layer is formed on the second non-magnetic layer. A non-magnetic metal layer electrically connects the first and the second shield layers. A first earth member is electrically connected to the electrode portion of the magnetoresistive element. A second earth member is electrically connected to the first and the second shield layers. A third earth member is electrically connected to the first earth member and the second earth member.
    Type: Application
    Filed: September 20, 2001
    Publication date: March 28, 2002
    Inventors: Satoshi Ajiki, Koichi Hosoya
  • Publication number: 20020012209
    Abstract: A magnetoresistive element has a first end face for detecting an external magnetic field and a second end face which is opposed to the first end face. A pair of vertical bias layers sandwich the magnetoresistive element so as to expose the first and second end faces, to apply a bias magnetic field to the magnetoresistive element. Each of the vertical bias layers includes a face, which is continuous and flush with the second end face, having a length of 1.5 &mgr;m or greater. Alternatively, each of the vertical bias layers includes a face which is continuous with the second end face, and inclined by 0 to 45 degrees with respect to the second end face.
    Type: Application
    Filed: June 8, 2001
    Publication date: January 31, 2002
    Inventors: Satoshi Ajiki, Tsuyoshi Ishii, Koichi Hosoya
  • Publication number: 20010036042
    Abstract: A plurality of magnetoresistive heads are arranged on a wafer substrate. A plurality of electrode pads are arranged on the wafer substrate in a first direction. Each electrode pad is connected to an associated magnetoresistive head. Respective adjacent electrode pads are shifted from each other in a second direction perpendicular to the first direction. The shifted amount of the adjacent pads in the second direction is larger than a dimension of the electrode pad in the second direction.
    Type: Application
    Filed: April 25, 2001
    Publication date: November 1, 2001
    Inventors: Satoshi Ajiki, Hiroaki Tobitsuka, Koichi Hosoya
  • Patent number: 5181668
    Abstract: An apparatus for inserting a coil of wire into a pipe which includes a rotatable drum for taking up a coil of spring wire, a guide for guiding the coil drawn from the rotatable drum, a push-pull device for applying external forces to the coil for feeding the coil into the pipe and retracting the coil out of the pipe, and a motor for rotating the guide and/or the drum. The drum and the guide are formed separately and are rotatable independently of each other, which rotation results in rotation of the coil of spring wire. The coil of wire has a rectangular or trapezoidal cross-section which enables the wire to effectively run through bends in the pipe without deforming or breaking.
    Type: Grant
    Filed: September 26, 1990
    Date of Patent: January 26, 1993
    Assignees: Osaka Gas Co., Ltd., Togawa Rubber Co., Ltd.
    Inventors: Toshinori Tsuji, Koichi Hosoya, Fumio Tsukimoto, Tatsuya Ashida, Katsuyuki Okubo, Tetsuo Bokuhara, Toshiaki Shinzo
  • Patent number: 4325772
    Abstract: A method of internally lining an installed pipe, which may be used for various types of pipelines such as those for transmitting town gas, natural gas, petroleum, and water. According to the invention, a flexible liner tube is placed inside an installed pipe, and then a liquid adhesive agent is introduced between the pipe and the tube. In this condition, an object is passed through the tube whereby the liquid adhesive agent acts to make the tube adhere to the interior wall of the pipe.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: April 20, 1982
    Assignee: Osaka Gas Kabushiki Kaisha
    Inventors: Tetsui Suetoshi, Munetaka Kinugasa, Koichi Hosoya, Mitsuo Yamamoto