Patents by Inventor Mitsuo Sakakura

Mitsuo Sakakura 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: 6889423
    Abstract: A laminated electronic component comprising: a plurality of parallel first conductive patterns, which are laminated via a magnetic layer to a plurality of parallel second conductive patterns, the first and second conductive patterns being alternately connected to each other via through-holes, thereby forming a spiral coil inside a laminated body, the axis of the spiral coil being parallel to a mount face; wherein the magnetic layer, provided between the plurality of first conductive patterns and the plurality of second conductive patterns, comprises non-magnetic sections which are provided at positions corresponding to ends of the conductive patterns and extend parallel to the axis of the coil, and a method for manufacturing the same.
    Type: Grant
    Filed: October 7, 2003
    Date of Patent: May 10, 2005
    Assignee: Toko Kabushiki Kaisha
    Inventors: Mitsuo Sakakura, Seiichi Kobayashi, Tadayoshi Nagasawa, Yutaka Noguchi, Hiroyasu Mori
  • Patent number: 6850127
    Abstract: A laminated electronic component in which insulating layers and conductive patterns are stacked to form a filter and a balun within the stacked body to connect the filter and the balun between an unbalanced terminal and a pair of balanced terminals.
    Type: Grant
    Filed: May 24, 2002
    Date of Patent: February 1, 2005
    Assignee: Toko Kabushiki Kaisha
    Inventors: Mitsuo Sakakura, Shigeru Komiyama, Masahide Takashima, Yoshinori Itoh
  • Patent number: 6727795
    Abstract: A laminated electronic component comprising: a plurality of parallel first conductive patterns, which are laminated via a magnetic layer to a plurality of parallel second conductive patterns, the first and second conductive patterns being alternately connected to each other via through-holes, thereby forming a spiral coil inside a laminated body, the axis of the spiral coil being parallel to a mount face; wherein the magnetic layer, provided between the plurality of first conductive patterns and the plurality of second conductive patterns, comprises non-magnetic sections which are provided at positions corresponding to ends of the conductive patterns and extend parallel to the axis of the coil, and a method for manufacturing the same.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: April 27, 2004
    Assignee: Toko Kabushiki Kaisha
    Inventors: Mitsuo Sakakura, Seiichi Kobayashi, Tadayoshi Nagasawa, Yutaka Noguchi, Hiroyasu Mori
  • Publication number: 20040046631
    Abstract: A laminated electronic component comprising: a plurality of parallel first conductive patterns, which are laminated via a magnetic layer to a plurality of parallel second conductive patterns, the first and second conductive patterns being alternately connected to each other via through-holes, thereby forming a spiral coil inside a laminated body, the axis of the spiral coil being parallel to a mount face; wherein the magnetic layer, provided between the plurality of first conductive patterns and the plurality of second conductive patterns, comprises non-magnetic sections which are provided at positions corresponding to ends of the conductive patterns and extend parallel to the axis of the coil, and a method for manufacturing the same.
    Type: Application
    Filed: October 7, 2003
    Publication date: March 11, 2004
    Inventors: Mitsuo Sakakura, Seiichi Kobayashi, Tadayoshi Nagasawa, Yutaka Noguchi, Hiroyasu Mori
  • Patent number: 6692609
    Abstract: A method for manufacturing a laminated electronic component, in which magnetic layers and conductive patterns for coil are sequentially provided, a coil pattern is enclosed between the magnetic layers inside a laminated body, and a nonmagnetic section is provided between adjacent conductive patterns for coil, the coil pattern being provided by repeatedly performing: a first step of providing a second magnetic layer over the entire top face of a first magnetic layer, which a first conductive pattern for coil is provided on; a second step of providing a loop-shaped groove in the second magnetic layer by using laser processing; a third step of providing a nonmagnetic section in one portion of the loop-shaped groove; and a fourth step of printing a second conductive pattern for coil so that one end section thereof overlaps the end section of the first conductive pattern for coil and the other end section extends to the surface of the nonmagnetic section.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: February 17, 2004
    Assignee: Toko Kabushiki Kaisha
    Inventors: Seiichi Kobayashi, Tadayoshi Nagasawa, Yutaka Noguchi, Hiroyasu Mori, Mitsuo Sakakura
  • Publication number: 20020175002
    Abstract: A laminated electronic component in which insulating layers and conductive patterns are stacked to form a filter and a balun within the stacked body to connect the filter and the balun between an unbalanced terminal and a pair of balanced terminals.
    Type: Application
    Filed: May 24, 2002
    Publication date: November 28, 2002
    Inventors: Mitsuo Sakakura, Shigeru Komiyama, Masahide Takashima, Yoshinori Itoh
  • Publication number: 20020118089
    Abstract: A laminated electronic component comprising: a plurality of parallel first conductive patterns, which are laminated via a magnetic layer to a plurality of parallel second conductive patterns, the first and second conductive patterns being alternately connected to each other via through-holes, thereby forming a spiral coil inside a laminated body, the axis of the spiral coil being parallel to a mount face; wherein the magnetic layer, provided between the plurality of first conductive patterns and the plurality of second conductive patterns, comprises non-magnetic sections which are provided at positions corresponding to ends of the conductive patterns and extend parallel to the axis of the coil, and a method for manufacturing the same.
    Type: Application
    Filed: February 22, 2002
    Publication date: August 29, 2002
    Inventors: Mitsuo Sakakura, Seiichi Kobayashi, Tadayoshi Nagasawa, Yutaka Noguchi, Hiroyasu Mori
  • Publication number: 20020053128
    Abstract: A method for manufacturing a laminated electronic component, in which magnetic layers and conductive patterns for coil are sequentially provided, a coil pattern is enclosed between the magnetic layers inside a laminated body, and a nonmagnetic section is provided between adjacent conductive patterns for coil, the coil pattern being provided by repeatedly performing: a first step of providing a second magnetic layer over the entire top face of a first magnetic layer, which a first conductive pattern for coil is provided on; a second step of providing a loop-shaped groove in the second magnetic layer by using laser processing; a third step of providing a nonmagnetic section in one portion of the loop-shaped groove; and a fourth step of printing a second conductive pattern for coil so that one end section thereof overlaps the end section of the first conductive pattern for coil and the other end section extends to the surface of the nonmagnetic section.
    Type: Application
    Filed: November 2, 2001
    Publication date: May 9, 2002
    Inventors: Seiichi Kobayashi, Tadayoshi Nagasawa, Yutaka Noguchi, Hiroyasu Mori, Mitsuo Sakakura
  • Patent number: 4336120
    Abstract: A method of fabricating a zinc oxide thin film by a sputtering process, wherein a substance, such as boron, having an ion radius smaller than that of zinc is sputtered in an oxygen atmosphere. A body of zinc and a body of such a substance may be separately provided as targets of a cathode so that such separate targets may be simultaneously sputtered to thereby produce a thin film such as mentioned above. Alternatively, use may be made of a cathode provided with a zinc target having a substance buried therein which has an ion radius smaller than that of zinc.
    Type: Grant
    Filed: March 4, 1981
    Date of Patent: June 22, 1982
    Assignee: Toko, Inc.
    Inventors: Mitsuo Sakakura, Tetsuo Takaku
  • Patent number: 4233135
    Abstract: In a method of fabricating a piezoelectric thin film of zinc oxide by means of a sputtering process, zinc and alkaline earth metal are sputtered together in an oxygen atmosphere to thereby produce zinc oxide containing the alkaline earth metal.
    Type: Grant
    Filed: February 15, 1979
    Date of Patent: November 11, 1980
    Assignee: Toko, Inc.
    Inventors: Mitsuo Sakakura, Tetsuo Takaku
  • Patent number: 4024081
    Abstract: Ferroelectric ceramic compositions consisting essentially of quaternary solid solutions of Pb(Fe1/2.Nb1/2)O.sub.3 --Pb(Zn1/3.Nb2/3)O.sub.3 --PbZrO.sub.3 --PbTiO.sub.3, the components of which are within a defined range of relative proportions, have substantially higher insulation resistance characteristics and substantially higher electromechanical coupling coefficient characteristics than prior art compositions. Additionally, the components within a more restricted range of relative proportions have the additional characteristic of a higher Poisson's ratio than prior art compositions.
    Type: Grant
    Filed: September 26, 1974
    Date of Patent: May 17, 1977
    Assignee: Toko Incorporated
    Inventors: Yasuo Ohmori, Mitsuo Sakakura, Hajime Miyajima