Patents by Inventor Takashige Shiga

Takashige Shiga 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).

  • Noise rejection device and cellular phone including the noise rejection device
    Patent number: 7358843
    Abstract: A device includes: a pillar-shaped core consisting of a first magnetic insulating material that has two quadric prism segments at both ends thereof symmetrically and has a cylindrical segment, which has an external shape smaller than that of the quadric prism segments, coaxially between the two quadric prism segments; a resistance film that is formed in a substantially uniform thickness so as to cover an outer circumferential face of the pillar-shaped core; a spiral line segment having a predetermined number of circumferences that is formed in a portion present on the cylindrical segment of the resistance film by subjecting a spiral sulcus to laser trimming; an oxide film that is formed to cover at least a surface of a shoulder portion extending from a side to an upper surface of lines constituting the spiral line segment; an armor consisting of a second magnetic insulating material that is formed to cover a surface of the portion present on the cylindrical segment of the resistance film and such that an exte
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: April 15, 2008
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Manabu Takayama, Shoichi Tosaka, Ikuo Kakiuchi, Takashige Shiga, Masaru Maeda
  • Noise rejection device and cellular phone including the noise rejection device
    Patent number: 7170379
    Abstract: A device includes: a pillar-shaped core consisting of a first magnetic insulating material that has two quadric prism segments at both ends thereof symmetrically and has a cylindrical segment, which has an external shape smaller than that of the quadric prism segments, coaxially between the two quadric prism segments; a conductor film that is formed in a substantially uniform thickness so as to cover an outer circumferential face of the pillar-shaped core; a spiral line segment having a predetermined number of circumferences that is formed in a portion present on the cylindrical segment of the conductor film by subjecting a spiral sulcus to laser trimming; an oxide film that is formed to cover at least a surface of a shoulder portion extending from a side to an upper surface of lines constituting the spiral line segment; an armor consisting of a second magnetic insulating material that is formed to cover a surface of the portion present on the cylindrical segment of the conductor film and such that an externa
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: January 30, 2007
    Assignee: Taiyo Yuden Co., Ltd.
    Inventors: Manabu Takayama, Shoichi Tosaka, Ikuo Kakiuchi, Takashige Shiga, Masaru Maeda
  • Noise rejection device and cellular phone including the noise rejection device
    Publication number: 20060125569
    Abstract: A device includes: a pillar-shaped core consisting of a first magnetic insulating material that has two quadric prism segments at both ends thereof symmetrically and has a cylindrical segment, which has an external shape smaller than that of the quadric prism segments, coaxially between the two quadric prism segments; a resistance film that is formed in a substantially uniform thickness so as to cover an outer circumferential face of the pillar-shaped core; a spiral line segment having a predetermined number of circumferences that is formed in a portion present on the cylindrical segment of the resistance film by subjecting a spiral sulcus to laser trimming; an oxide film that is formed to cover at least a surface of a shoulder portion extending from a side to an upper surface of lines constituting the spiral line segment; an armor consisting of a second magnetic insulating material that is formed to cover a surface of the portion present on the cylindrical segment of the resistance film and such that an exte
    Type: Application
    Filed: September 29, 2005
    Publication date: June 15, 2006
    Inventors: Manabu Takayama, Shoichi Tosaka, Ikuo Kakiuchi, Takashige Shiga, Masaru Maeda
  • Noise rejection device and cellular phone including the noise rejection device
    Publication number: 20060125587
    Abstract: A device includes: a pillar-shaped core consisting of a first magnetic insulating material that has two quadric prism segments at both ends thereof symmetrically and has a cylindrical segment, which has an external shape smaller than that of the quadric prism segments, coaxially between the two quadric prism segments; a conductor film that is formed in a substantially uniform thickness so as to cover an outer circumferential face of the pillar-shaped core; a spiral line segment having a predetermined number of circumferences that is formed in a portion present on the cylindrical segment of the conductor film by subjecting a spiral sulcus to laser trimming; an oxide film that is formed to cover at least a surface of a shoulder portion extending from a side to an upper surface of lines constituting the spiral line segment; an armor consisting of a second magnetic insulating material that is formed to cover a surface of the portion present on the cylindrical segment of the conductor film and such that an externa
    Type: Application
    Filed: September 29, 2005
    Publication date: June 15, 2006
    Inventors: Manabu Takayama, Soichi Tosaka, Ikuo Kakiuchi, Takashige Shiga, Masaru Maeda