Patents by Inventor Shigeaki Tanaka

Shigeaki Tanaka 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: 11011315
    Abstract: Disclosed herein is a thin film capacitor that includes a capacitive insulating film having first and second through holes, a first metal film provided on one surface of the capacitive insulating film, and a second metal film provided on the other surface of the capacitive insulating film. The first and second metal films are made of different metal materials from each other. The first metal film is divided into a first area positioned outside the first space and a second area positioned inside the first space. The second metal film is divided into a third area positioned outside the second space and a fourth area positioned inside the second space. The third area is connected to the second area through the first through hole. The fourth area is connected to the first area through the second through hole.
    Type: Grant
    Filed: June 10, 2019
    Date of Patent: May 18, 2021
    Assignee: TDK CORPORATION
    Inventors: Michihiro Kumagae, Kazuhiro Yoshikawa, Shigeaki Tanaka, Hitoshi Saita
  • Publication number: 20190392992
    Abstract: Disclosed herein is a thin film capacitor that includes a capacitive insulating film having first and second through holes, a first metal film provided on one surface of the capacitive insulating film, and a second metal film provided on the other surface of the capacitive insulating film. The first and second metal films are made of different metal materials from each other. The first metal film is divided into a first area positioned outside the first space and a second area positioned inside the first space. The second metal film is divided into a third area positioned outside the second space and a fourth area positioned inside the second space. The third area is connected to the second area through the first through hole. The fourth area is connected to the first area through the second through hole.
    Type: Application
    Filed: June 10, 2019
    Publication date: December 26, 2019
    Applicant: TDK CORPORATION
    Inventors: Michihiro KUMAGAE, Kazuhiro YOSHIKAWA, Shigeaki TANAKA, Hitoshi SAITA
  • Patent number: 10062507
    Abstract: An electronic device sheet, comprising a pair of electrodes, a dielectric layer provided between the pair of electrodes, and one or more insulation patch members provided on one of principal surfaces of the dielectric layer, wherein the insulation patch member includes a boundary line having an undulating shape.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: August 28, 2018
    Assignee: TDK CORPORATION
    Inventors: Junji Aotani, Shigeaki Tanaka, Katsuyuki Kurachi, Tatsuo Namikawa, Yuuki Aburakawa
  • Patent number: 10014113
    Abstract: The electronic device sheet comprises a pair of electrode layers, a dielectric layer provided between the pair of electrode layers, and one or more insulation patch members provided on one of principal surfaces of the dielectric layer, wherein the number of the insulation patch members is 1 or more and 1000 or less per 1 cm2 of the principal surface, and the total area of the insulation patch members is 10 ?m2 or larger and 3 mm2 or smaller per 1 cm2 of the principal surface.
    Type: Grant
    Filed: October 7, 2016
    Date of Patent: July 3, 2018
    Assignee: TDK CORPORATION
    Inventors: Junji Aotani, Shigeaki Tanaka, Yoshihiko Yano
  • Patent number: 9831039
    Abstract: A thin film capacitor comprises: a laminated body that has a base electrode, a dielectric layer and an upper electrode layer; a protective layer covering the base electrode, the dielectric layer and the upper electrode layer, and includes a first through-hole that reaches the base electrode, and a second through-hole that reaches the upper electrode layer; a first extraction electrode in the first through-hole and electrically connected with the base electrode; a second extraction electrode in the second through-hole and electrically connected with the upper electrode layer; a first terminal electrode on the protective layer, and connected with the base electrode through the first extraction electrode; and a second terminal electrode on the protective layer, and connected with the upper electrode layer through the second extraction electrode. Young's modulus of the protective layer is equal to or higher than 0.1 GPa and equal to or lower than 2.0 GPa.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: November 28, 2017
    Assignee: TDK CORPORATION
    Inventors: Tatsuo Namikawa, Junji Aotani, Katsuyuki Kurachi, Yuuki Aburakawa, Shigeaki Tanaka
  • Patent number: 9818539
    Abstract: A thin film capacitor includes a lower electrode layer, an upper electrode layer, and a dielectric substance layer provided between the lower electrode layer and the upper electrode layer. A dielectric patch member formed of a dielectric material is formed on a surface of the dielectric substance layer on an upper electrode layer side, a cross-sectional structure of the dielectric patch member has a taper angle of 1 to 25 degrees in a cross section perpendicular to the dielectric substance layer, the taper angle being an angle formed by (1) a tangential line tangent to an end portion of the dielectric patch member at a position that is 50% of a maximum height of the dielectric patch member and (2) a line being an interface between the dielectric substance layer and the upper electrode layer, and an area of the dielectric patch member is 100 to 900000 ?m2.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: November 14, 2017
    Assignee: TDK CORPORATION
    Inventors: Junji Aotani, Shigeaki Tanaka, Katsuyuki Kurachi, Tatsuo Namikawa, Yuuki Aburakawa
  • Patent number: 9773614
    Abstract: A thin film capacitor includes a pair of electrode layers, a dielectric layer existing between the pair of electrode layers, and a ceramic layer disposed on a surface opposite to the dielectric layer of at least one of the electrode layers.
    Type: Grant
    Filed: July 20, 2015
    Date of Patent: September 26, 2017
    Assignee: TDK CORPORATION
    Inventors: Katsuyuki Kurachi, Tatsuo Namikawa, Junji Aotani, Yuuki Aburakawa, Shigeaki Tanaka
  • Publication number: 20170117096
    Abstract: An electronic device sheet, comprising a pair of electrodes, a dielectric layer provided between the pair of electrodes, and one or more insulation patch members provided on one of principal surfaces of the dielectric layer, wherein the insulation patch member includes a boundary line having an undulating shape.
    Type: Application
    Filed: October 21, 2016
    Publication date: April 27, 2017
    Applicant: TDK CORPORATION
    Inventors: Junji AOTANI, Shigeaki TANAKA, Katsuyuki KURACHI, Tatsuo NAMIKAWA, Yuuki ABURAKAWA
  • Publication number: 20170110250
    Abstract: The electronic device sheet comprises a pair of electrode layers, a dielectric layer provided between the pair of electrode layers, and one or more insulation patch members provided on one of principal surfaces of the dielectric layer, wherein the number of the insulation patch members is 1 or more and 1000 or less per 1 cm2 of the principal surface, and the total area of the insulation patch members is 10 ?m2 or larger and 3 mm2 or smaller per 1 cm2 of the principal surface.
    Type: Application
    Filed: October 7, 2016
    Publication date: April 20, 2017
    Applicant: TDK CORPORATION
    Inventors: Junji AOTANI, Shigeaki TANAKA, Yoshihiko YANO
  • Patent number: 9620291
    Abstract: A thin film capacitor including a lower electrode layer, a dielectric layer provided on the lower electrode layer, and an upper electrode layer formed on the dielectric layer, wherein the dielectric layer includes a recessed portion in a portion on the upper face thereof, a cross-sectional structure perpendicular to the dielectric layer of the recessed portion has a cross-sectional taper angle of 1 degree or more and 25 degrees or less, and the distance between the bottom portion center and an outermost portion of the recessed portion is 20 times or more and 150 times or less a thickness of the dielectric layer.
    Type: Grant
    Filed: July 14, 2015
    Date of Patent: April 11, 2017
    Assignee: TDK CORPORATION
    Inventors: Junji Aotani, Shigeaki Tanaka, Katsuyuki Kurachi, Tatsuo Namikawa, Yuuki Aburakawa
  • Patent number: 9398728
    Abstract: The present invention aims at providing a storage subsystem capable of improving a backend-side I/O processing performance and enabling a single semiconductor memory adapter to be replaced at a time. Therefore, the present invention provides one or more semiconductor memory adapter boards mounting semiconductor memories each having smaller capacity than SSDs attached detachably to a drive canister, a wide port connection established to access the semiconductor memories, the semiconductor memories used as a read cache area of HDDs, and further adopts a wind direction control structure for ensuring a cooling wind path to the HDDs when an adapter board is attached.
    Type: Grant
    Filed: December 11, 2013
    Date of Patent: July 19, 2016
    Assignee: HITACHI, LTD.
    Inventors: Shigeaki Tanaka, Takashi Chikusa
  • Publication number: 20160163463
    Abstract: A thin film capacitor comprises: a laminated body that has a base electrode, a dielectric layer and an upper electrode layer; a protective layer covering the base electrode, the dielectric layer and the upper electrode layer, and includes a first through-hole that reaches the base electrode, and a second through-hole that reaches the upper electrode layer; a first extraction electrode in the first through-hole and electrically connected with the base electrode; a second extraction electrode in the second through-hole and electrically connected with the upper electrode layer; a first terminal electrode on the protective layer, and connected with the base electrode through the first extraction electrode; and a second terminal electrode on the protective layer, and connected with the upper electrode layer through the second extraction electrode. Young's modulus of the protective layer is equal to or higher than 0.1 GPa and equal to or lower than 2.0 GPa.
    Type: Application
    Filed: November 30, 2015
    Publication date: June 9, 2016
    Applicant: TDK CORPORATION
    Inventors: Tatsuo NAMIKAWA, Junji AOTANI, Katsuyuki KURACHI, Yuuki ABURAKAWA, Shigeaki TANAKA
  • Publication number: 20160111211
    Abstract: A thin film capacitor comprising a lower electrode layer, an upper electrode layer, and a dielectric substance layer provided between the lower electrode layer and the upper electrode layer, wherein a dielectric patch member formed of a dielectric material is formed on a surface of the dielectric substance layer on an upper electrode layer side, a cross-sectional structure of the dielectric patch member has a taper angle of 1 to 25 degrees in a cross section perpendicular to the dielectric substance layer, the taper angle being an angle formed by (1) a tangential line tangent to an end portion of the dielectric patch member at a position that is 50% of a maximum height of the dielectric patch member and (2) a line being an interface between the dielectric substance layer and the upper electrode layer, and an area of the dielectric patch member is 100 to 900000 ?m2.
    Type: Application
    Filed: October 13, 2015
    Publication date: April 21, 2016
    Inventors: Junji AOTANI, Shigeaki TANAKA, Katsuyuki KURACHI, Tatsuo NAMIKAWA, Yuuki ABURAKAWA
  • Publication number: 20160027579
    Abstract: A thin film capacitor includes a pair of electrode layers, a dielectric layer existing between the pair of electrode layers, and a ceramic layer disposed on a surface opposite to the dielectric layer of at least one of the electrode layers.
    Type: Application
    Filed: July 20, 2015
    Publication date: January 28, 2016
    Inventors: Katsuyuki KURACHI, Tatsuo NAMIKAWA, Junji AOTANI, Yuuki ABURAKAWA, Shigeaki TANAKA
  • Publication number: 20160020030
    Abstract: A thin film capacitor including a lower electrode layer, a dielectric layer provided on the lower electrode layer, and an upper electrode layer formed on the dielectric layer, wherein the dielectric layer includes a recessed portion in a portion on the upper face thereof, a cross-sectional structure perpendicular to the dielectric layer of the recessed portion has a cross-sectional taper angle of 1 degree or more and 25 degrees or less, and the distance between the bottom portion center and an outermost portion of the recessed portion is 20 times or more and 150 times or less a thickness of the dielectric layer.
    Type: Application
    Filed: July 14, 2015
    Publication date: January 21, 2016
    Inventors: Junji AOTANI, Shigeaki TANAKA, Katsuyuki KURACHI, Tatsuo NAMIKAWA, Yuuki ABURAKAWA
  • Publication number: 20150342095
    Abstract: The present invention aims at providing a storage subsystem capable of improving a backend-side I/O processing performance and enabling a single semiconductor memory adapter to be replaced at a time. Therefore, the present invention provides one or more semiconductor memory adapter boards mounting semiconductor memories each having smaller capacity than SSDs attached detachably to a drive canister, a wide port connection established to access the semiconductor memories, the semiconductor memories used as a read cache area of HDDs, and further adopts a wind direction control structure for ensuring a cooling wind path to the HDDs when an adapter board is attached.
    Type: Application
    Filed: December 11, 2013
    Publication date: November 26, 2015
    Applicant: Hitachi, Ltd.
    Inventors: Shigeaki TANAKA, Takashi CHIKUSA
  • Patent number: 8879248
    Abstract: A storage apparatus S comprises a disk controller for controlling data I/O processing between a host H and a disk unit. The disk controller includes a plurality of circuit board modules each having a circuit board and a module case storing the same, and a chassis shaped like a hollow cylinder having a front side opening and a rear side opening and configured to store the circuit board modules from the front and rear side openings. A CM module is configured to introduce cooling air from a cooling fan through an opening provided on at least one side surface toward a circuit component mounted on the circuit board. A MP module is configured to introduce cooling air by a cooling fan through an opening provide on a front surface of the module case.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: November 4, 2014
    Assignee: Hitachi, Ltd.
    Inventors: Shigeaki Tanaka, Kentaro Abe
  • Publication number: 20140084578
    Abstract: There is provided a compound represented by the following formula (1): wherein each of R1a to R1k independently represents a hydrogen atom or a monovalent substituent, the substituents may combine with each other to form a ring, each of M1a and M1b independently represents a hydrogen atom or a monovalent counter cation, Y1 represents a nitrogen atom or a carbon atom having a hydrogen atom or monovalent substituent, A1 represents an aromatic group, and the aromatic group represented by A1 may contain a heteroatom or may have a substituent.
    Type: Application
    Filed: September 25, 2013
    Publication date: March 27, 2014
    Applicant: FUJIFILM Corporation
    Inventors: Kazunari YAGI, Shinya HAYASHI, Yutaro NORIZUKI, Takashi IIZUMI, Ichiro AMASAKI, Hiroshi YAMADA, Shigeaki TANAKA
  • Patent number: 8603191
    Abstract: There is provided an aqueous solution containing (a) a preservative and (b) at least one azo compound represented by the following Formula (1) or a salt thereof, in which the content of (b) is 1% by mass to 25% by mass. (In Formula (1), G represents a nitrogen atom or —C(R2)?. R2 represents a hydrogen atom, a sulfo group, a carboxyl group, a substituted or unsubstituted carbamoyl group or a cyano group. X1, X2, X3, X4, X5, X6 and X7 each independently represents a hydrogen atom or a monovalent substituent. Y2, Y3 and Y4 each independently represents a hydrogen atom or a monovalent substituent. Y2, Y3 and Y4 may be bonded with each other to form a ring. All of Y2, Y3 and Y4 do not represent hydrogen atoms at the same time. M each independently represents a hydrogen atom or a monovalent countercation.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: December 10, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Keiichi Tateishi, Yoshihiko Fujie, Shigeaki Tanaka
  • Patent number: 8585781
    Abstract: There is provided an aqueous solution including: (a) a preservative, and (b) at least one kind of an azo compound represented by the following Formula (1) or a salt thereof, wherein a content of (b) is 1% by mass to 25% by mass: wherein, in Formula (1), A represents a substituted phenyl group or a substituted or unsubstituted nitrogen-containing 5-membered heterocyclic group, G represents a nitrogen atom or —C(R2)?, R2 represents a hydrogen atom, a sulfo group, a carboxy group, a substituted or unsubstituted carbamoyl group or cyano group, Y2, Y3 and Y4 each independently represents a hydrogen atom or a monovalent substituent, Y2, Y3 and Y4 may be bonded to each other to form a ring, all of Y2, Y3 and Y4 do not represent a hydrogen atom at the same time, and M each independently represents a hydrogen atom or a monovalent countercation.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: November 19, 2013
    Assignee: FUJIFILM Corporation
    Inventors: Keiichi Tateishi, Yoshihiko Fujie, Shigeaki Tanaka