Patents by Inventor Tomomichi Gunji

Tomomichi Gunji 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: 9978521
    Abstract: A multilayer electronic component includes an element body having an internal electrode layer and a dielectric layer. These layers are substantially parallel to a plane including a first axis and a second axis and are alternately laminated along a third axis direction. A pair of side surfaces facing each other in the first axis direction of the element body is respectively equipped with an insulating layer. A pair of end surfaces facing each other in the second axis direction of the element body is respectively equipped with an external electrode electrically connected to the internal electrode layer. The insulating layer has a mountain portion formed on a peripheral edge of the side surface and a plane portion of a central portion of the side surface.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: May 22, 2018
    Assignee: TDK CORPORATION
    Inventors: Keisuke Okai, Makoto Endo, Hiroshi Shindo, Yui Sugiura, Tomomichi Gunji, Yohei Noda, Hirobumi Tanaka
  • Patent number: 9972440
    Abstract: A multilayer electronic component includes an element body having an internal electrode layer and a dielectric layer. These are substantially parallel to a plane including a first axis and a second axis and are alternately laminated along a third axis direction. Side surfaces facing each other in the first axis direction are respectively equipped with an insulating layer. End surfaces facing each other in the second axis direction are respectively equipped with an external electrode. An elastic modulus of the insulating layer is 12 GPa to 140 GPa.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: May 15, 2018
    Assignee: TDK CORPORATION
    Inventors: Keisuke Okai, Makoto Endo, Yohei Noda, Hirobumi Tanaka, Tomomichi Gunji, Yui Sugiura, Hiroshi Shindo
  • Patent number: 9892855
    Abstract: An external electrode includes a sintered metal layer disposed on at least an end surface and a conductive resin layer disposed on the sintered metal layer. The sintered metal layer includes a first portion, a second portion, and a third portion. The first portion is disposed at a central region of the end surface. The second portion is disposed at a part of a peripheral region of the end surface, and extends to an edge portion of the end surface from the first portion. The third portion is disposed at a remaining part of the peripheral region of the end surface. The thickness of the second portion is less than that of the first portion. The thickness of the third portion is less than that of the second portion. The first portion, the second portion, and the third portion are covered with the conductive resin layer.
    Type: Grant
    Filed: September 26, 2016
    Date of Patent: February 13, 2018
    Assignee: TDK CORPORATION
    Inventors: Norihisa Ando, Atsushi Takeda, Hideki Kaneko, Yui Sugiura, Tatsuo Inagaki, Tomomichi Gunji, Kouhei Yamaguchi
  • Patent number: 9870866
    Abstract: A multilayer electronic component includes an element body having an internal electrode layer and a dielectric layer. These are substantially parallel to a plane including a first axis and a second axis and are alternately laminated along a third axis direction. Side surfaces facing each other in the first axis direction are respectively equipped with an insulating layer. End surfaces facing each other in the second axis direction are respectively equipped with an external electrode. The insulating layer integrally has an insulating layer extension portion covering part of the end surfaces facing each other in the second axis direction. W1/W0 is 1/30 to less than ?, where W0 denotes a width along the first axis, and W1 denotes a width along the first axis of the insulating layer extension portion. The external electrode covers at least part of the insulating layer extension portion.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: January 16, 2018
    Assignee: TDK CORPORATION
    Inventors: Yohei Noda, Hirobumi Tanaka, Hiroshi Shindo, Yui Sugiura, Tomomichi Gunji, Keisuke Okai
  • Publication number: 20170098505
    Abstract: An external electrode includes a sintered metal layer disposed on at least an end surface and a conductive resin layer disposed on the sintered metal layer. The sintered metal layer includes a first portion, a second portion, and a third portion. The first portion is disposed at a central region of the end surface. The second portion is disposed at a part of a peripheral region of the end surface, and extends to an edge portion of the end surface from the first portion. The third portion is disposed at a remaining part of the peripheral region of the end surface. The thickness of the second portion is less than that of the first portion. The thickness of the third portion is less than that of the second portion. The first portion, the second portion, and the third portion are covered with the conductive resin layer.
    Type: Application
    Filed: September 26, 2016
    Publication date: April 6, 2017
    Applicant: TDK CORPORATION
    Inventors: Norihisa ANDO, Atsushi TAKEDA, Hideki KANEKO, Yui SUGIURA, Tatsuo INAGAKI, Tomomichi GUNJI, Kouhei YAMAGUCHI
  • Publication number: 20170076870
    Abstract: A multilayer electronic component includes an element body having an internal electrode layer and a dielectric layer. These are substantially parallel to a plane including a first axis and a second axis and are alternately laminated along a third axis direction. Side surfaces facing each other in the first axis direction are respectively equipped with an insulating layer. End surfaces facing each other in the second axis direction are respectively equipped with an external electrode. The insulating layer integrally has an insulating layer extension portion covering part of the end surfaces facing each other in the second axis direction. W1/W0 is 1/30 to less than ?, where W0 denotes a width along the first axis, and W1 denotes a width along the first axis of the insulating layer extension portion. The external electrode covers at least part of the insulating layer extension portion.
    Type: Application
    Filed: September 14, 2016
    Publication date: March 16, 2017
    Applicant: TDK CORPORATION
    Inventors: Yohei NODA, Hirobumi TANAKA, Hiroshi SHINDO, Yui SUGIURA, Tomomichi GUNJI, Keisuke OKAI
  • Publication number: 20170076867
    Abstract: A multilayer electronic component includes an element body having an internal electrode layer and a dielectric layer. These layers are substantially parallel to a plane including a first axis and a second axis and are alternately laminated along a third axis direction. A pair of side surfaces facing each other in the first axis direction of the element body is respectively equipped with an insulating layer. A pair of end surfaces facing each other in the second axis direction of the element body is respectively equipped with an external electrode electrically connected to the internal electrode layer. The insulating layer has a mountain portion formed on a peripheral edge of the side surface and a plane portion of a central portion of the side surface.
    Type: Application
    Filed: September 14, 2016
    Publication date: March 16, 2017
    Applicant: TDK CORPORATION
    Inventors: Keisuke OKAI, Makoto ENDO, Hiroshi SHINDO, Yui SUGIURA, Tomomichi GUNJI, Yohei NODA, Hirobumi TANAKA
  • Publication number: 20170076864
    Abstract: A multilayer electronic component includes an element body having an internal electrode layer and a dielectric layer. These are substantially parallel to a plane including a first axis and a second axis and are alternately laminated along a third axis direction. Side surfaces facing each other in the first axis direction are respectively equipped with an insulating layer. End surfaces facing each other in the second axis direction are respectively equipped with an external electrode. An elastic modulus of the insulating layer is 12 GPa to 140 GPa.
    Type: Application
    Filed: September 13, 2016
    Publication date: March 16, 2017
    Applicant: TDK CORPORATION
    Inventors: Keisuke OKAI, Makoto ENDO, Yohei NODA, Hirobumi TANAKA, Tomomichi GUNJI, Yui SUGIURA, Hiroshi SHINDO
  • Patent number: 7109022
    Abstract: This invention relates to a denitrifying composition which is a material to be used for decomposing nitrates nitrogen in effluent by sulfur-oxidizing bacteria that consume sulfur and carbonate as nutrients and is characterized by containing particles of calcium carbonate dispersed in sulfur. Preferably, the composition contains 10 parts by weight of sulfur coexisting with 10-15 parts by weight of calcium carbonate and 1-3 parts by weight of a microporous substance. This denitrifying composition can be prepared by heating powder of calcium carbonate and sulfur thereby melting the sulfur, dispersing the powder of calcium carbonate in liquid sulfur and solidifying the dispersion by rapid cooling. The composition simultaneously contains nutrients and alkali source and hence enables denitrification to proceed stably without addition of other components.
    Type: Grant
    Filed: September 24, 1999
    Date of Patent: September 19, 2006
    Assignees: Nitchitsu Co., Ltd, Nippon Steel Chemical Co., Ltd.
    Inventors: Atsushi Yatagai, Tomomichi Gunji, Hiroshi Masujima, Takuma Yabe, Toru Oishi
  • Patent number: 6734011
    Abstract: This invention relates to a denitrifying composition which is a material to be used for decomposing nitrates nitrogen in effluent by sulfur-oxidizing bacteria that consume sulfur and carbonate as nutrients and is characterized by containing particles of calcium carbonate dispersed in sulfur. Preferably, the composition contains 10 parts by weight of sulfur coexisting with 10-15 parts by weight of calcium carbonate and 1-3 parts by weight of a microporous substance. This denitrifying composition can be prepared by heating powder of calcium carbonate and sulfur thereby melting the sulfur, dispersing the powder of calcium carbonate in liquid sulfur and solidifying the dispersion by rapid cooling. The composition simultaneously contains nutrients and alkali source and hence enables denitrification to proceed stably without addition of other components.
    Type: Grant
    Filed: June 12, 2001
    Date of Patent: May 11, 2004
    Assignees: Nitchitsu Co., Ltd, Nippon Steel Chemical Co., Ltd.
    Inventors: Atsushi Yatagai, Tomomichi Gunji, Hiroshi Masujima, Takuma Yabe, Toru Oishi