Patents by Inventor Tatsumi Hirano

Tatsumi Hirano 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).

  • Publication number: 20190156978
    Abstract: An insulated electrical wire of an embodiment includes a conductor having a first and a second lateral face which are opposed to each other; and a first and a second insulating film which are arranged on the first and second lateral faces, respectively, and each of which has a pair of convex portions and an intermediate portion arranged between the pair of convex portions. A ratio of a thickness of the intermediate portion relative to a thickness of the pair of convex portions of each of the first and second insulating films is from 0.50 to 0.90.
    Type: Application
    Filed: January 29, 2019
    Publication date: May 23, 2019
    Applicants: DENSO CORPORATION, UNIMAC LTD.
    Inventors: Akito TAMURA, Yuki AMANO, Kazuomi HIRAI, Masatoshi NARITA, Tatsumi HIRANO, Yasunari ASHIDA, Suguru IGARASHI
  • Publication number: 20180226678
    Abstract: Provided are a non-aqueous electrolyte solution used for a lithium secondary battery etc. capable of decreasing aging deterioration of a discharge capacity, a cathode used for a lithium secondary battery, and a method for producing the same, as well as a storage device like a lithium secondary battery etc. To the non-aqueous electrolyte solution, added are POF2? or a salt thereof, and, PO2F2? or a salt thereof or PO3F2? or a salt thereof. Alternatively, added is a reaction product between a boroxine compound and lithium hexafluorophosphate. In the cathode, the average oxidation number of a transition metal present in a surface layer of a composite oxide is more than 4 in Mn, more than 3 in Co and more than 2 in Ni, respectively. Further, a boron-containing compound is present on a surface of the composite oxide.
    Type: Application
    Filed: July 28, 2016
    Publication date: August 9, 2018
    Inventors: Hiroshi HARUNA, Shin TAKAHASHI, Daiko TAKAMATSU, Tatsumi HIRANO
  • Patent number: 9972409
    Abstract: According to one embodiment, an insulated wire is disclosed. The insulated wire includes an aluminum conductor, and a first insulating film provided on the aluminum conductor. The first insulating film is made of a first polyimide obtained by reacting an acid component containing 50 mol % to 90 mol % of 3,3?,4,4?-biphenyl tetracarboxylic acid dianhydride, 5 mol % to 20 mol % of 3,3?,4,4?-benzophenone tetracarboxylic acid dianhydride, and 5 mol % to 40 mol % of pyromellitic anhydride with a diamine component containing 4,4?-diaminodiphenyl ether.
    Type: Grant
    Filed: September 11, 2015
    Date of Patent: May 15, 2018
    Assignees: DENSO Corporation, Unimac Ltd.
    Inventors: Takefumi Kaji, Shinsuke Sugiura, Kazuomi Hirai, Yumi Nakane, Tatsumi Hirano, Yasunari Ashida
  • Patent number: 9607736
    Abstract: According to one embodiment, an insulated wire is disclosed. The wire includes a conductor and an insulating film formed on the conductor, the insulating film including a first layer of a first polyamideimide containing an adhesion improver; a second layer of a second polyamideimide obtained by reacting an isocyanate component containing 10 to 70 mol % in total of 2,4?-diphenylmethane diisocyanate and dimer acid diisocyanate with an acid component; and a third layer of a polyimide obtained by reacting an acid component containing 50 to 80 mol % of 3,3?,4,4?-biphenyl tetracarboxylic dianhydride and 20 to 50 mol % of pyromellitic anhydride with a diamine component containing 4,4?-diaminodiphenyl ether.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: March 28, 2017
    Assignees: DENSO Corporation, Unimac LTD.
    Inventors: Yuki Amano, Shinsuke Sugiura, Kazuomi Hirai, Yumi Nakane, Masatoshi Narita, Tatsumi Hirano, Futoshi Kanemitsu, Yasunari Ashida
  • Patent number: 9601238
    Abstract: According to one embodiment, an insulated wire is disclosed. The wire includes a conductor and an insulating film formed on the conductor, the insulating film including a first layer of a first polyamideimide containing an adhesion improver; a second layer of a second polyamideimide obtained by reacting an isocyanate component containing 10 to 70 mol % in total of 2,4?-diphenylmethane diisocyanate and dimer acid diisocyanate with an acid component; and a third layer of a polyimide obtained by reacting an acid component containing 50 to 90 mol % of 3,3?,4,4?-biphenyl tetracarboxylic dianhydride, 5 to 20 mol % of 3,3?,4,4?-benzophenonetetracarboxylic dianhydride and 5 to 40 mol % of pyromellitic anhydride with a diamine component containing 4,4?-diaminodiphenyl ether.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: March 21, 2017
    Assignees: DENSO Corporation, Unimac Ltd.
    Inventors: Yuki Amano, Shinsuke Sugiura, Kazuomi Hirai, Yumi Nakane, Masatoshi Narita, Tatsumi Hirano, Futoshi Kanemitsu, Yasunari Ashida
  • Patent number: 9330814
    Abstract: According to one embodiment, an insulated electric wire is disclosed. The insulated electric wire includes a conductor and an insulating film formed on the conductor, the insulating film including a first layer of a first polyamideimide containing an adhesion improver, a second layer of a second polyamideimide obtained by reacting an isocyanate component containing 10 to 70 mol % in total of 2,4?-diphenylmethane diisocyanate and dimer acid diisocyanate react with an acid component formed on the first layer, and a third layer of a polyimide formed on the second layer.
    Type: Grant
    Filed: July 16, 2013
    Date of Patent: May 3, 2016
    Assignees: Denso Corporation, Unimac Ltd.
    Inventors: Tomokazu Hisada, Yuki Amano, Kazuomi Hirai, Yumi Kawachi, Masatoshi Narita, Tatsumi Hirano, Futoshi Kanemitsu, Yasunari Ashida
  • Publication number: 20160086691
    Abstract: According to one embodiment, an insulated wire is disclosed. The insulated wire includes an aluminum conductor, and a first insulating film provided on the aluminum conductor. The first insulating film is made of a first polyimide obtained by reacting an acid component containing 50 mol % to 90 mol % of 3,3?,4,4?-biphenyl tetracarboxylic acid dianhydride, 5 mol % to 20 mol % of 3,3?,4,4?-benzophenone tetracarboxylic acid dianhydride, and 5 mol % to 40 mol % of pyromellitic anhydride with a diamine component containing 4,4?-diaminodiphenyl ether.
    Type: Application
    Filed: September 11, 2015
    Publication date: March 24, 2016
    Applicants: UNIMAC LTD., DENSO CORPORATION
    Inventors: Takefumi KAJI, Shinsuke SUGIURA, Kazuomi HIRAI, Yumi NAKANE, Tatsumi HIRANO, Yasunari ASHIDA
  • Publication number: 20150206627
    Abstract: According to one embodiment, an insulated wire is disclosed. The wire includes a conductor and an insulating film formed on the conductor, the insulating film including a first layer of a first polyamideimide containing an adhesion improver; a second layer of a second polyamideimide obtained by reacting an isocyanate component containing 10 to 70 mol % in total of 2,4?-diphenylmethane diisocyanate and dimer acid diisocyanate with an acid component; and a third layer of a polyimide obtained by reacting an acid component containing 50 to 80 mol % of 3,3?,4,4?-biphenyl tetracarboxylic dianhydride and 20 to 50 mol % of pyromellitic anhydride with a diamine component containing 4,4?-diaminodiphenyl ether.
    Type: Application
    Filed: January 15, 2015
    Publication date: July 23, 2015
    Applicants: UNIMAC LTD., DENSO CORPORATION
    Inventors: Yuki AMANO, Shinsuke SUGIURA, Kazuomi HIRAI, Yumi NAKANE, Masatoshi NARITA, Tatsumi HIRANO, Futoshi KANEMITSU, Yasunari ASHIDA
  • Publication number: 20150206626
    Abstract: According to one embodiment, an insulated wire is disclosed. The wire includes a conductor and an insulating film formed on the conductor, the insulating film including a first layer of a first polyamideimide containing an adhesion improver; a second layer of a second polyamideimide obtained by reacting an isocyanate component containing 10 to 70 mol % in total of 2,4?-diphenylmethane diisocyanate and dimer acid diisocyanate with an acid component; and a third layer of a polyimide obtained by reacting an acid component containing 50 to 90 mol % of 3,3?,4,4?-biphenyl tetracarboxylic dianhydride, 5 to 20 mol % of 3,3?,4,4?-benzophenonetetracarboxylic dianhydride and 5 to 40 mol % of pyromellitic anhydride with a diamine component containing 4,4?-diaminodiphenyl ether.
    Type: Application
    Filed: January 15, 2015
    Publication date: July 23, 2015
    Applicants: UNIMAC LTD., DENSO CORPORATION
    Inventors: Yuki AMANO, Shinsuke SUGIURA, Kazuomi HIRAI, Yumi NAKANE, Masatoshi NARITA, Tatsumi HIRANO, Futoshi KANEMITSU, Yasunari ASHIDA
  • Publication number: 20150125752
    Abstract: Conventionally, there is a problem that a volume of a negative electrode active material changes during a charge-discharge cycle, a conductive network in a negative electrode gradually degrades, and thus a capacity of the negative electrode decreases. To solve the problem, the present invention has an object to prevent a reduction in capacity of the negative electrode, and increase life of a lithium ion secondary battery. A negative electrode active material for lithium ion secondary battery includes: a graphite core material; and a covering layer that covers a surface of the core material, wherein the covering layer has a thickness of 1 nm to 200 nm, and has a bulk modulus lower than a bulk modulus of the core material.
    Type: Application
    Filed: April 19, 2013
    Publication date: May 7, 2015
    Applicant: HITACHI, LTD.
    Inventors: Etsuko Nishimura, Akihide Tanaka, Daiko Takamatsu, Tatsumi Hirano, Keiji Okabe
  • Publication number: 20140020929
    Abstract: According to one embodiment, an insulated electric wire is disclosed. The insulated electric wire includes a conductor and an insulating film formed on the conductor, the insulating film including a first layer of a first polyamideimide containing an adhesion improver, a second layer of a second polyamideimide obtained by reacting an isocyanate component containing 10 to 70 mol % in total of 2,4?-diphenylmethane diisocyanate and dimer acid diisocyanate react with an acid component formed on the first layer, and a third layer of a polyimide formed on the second layer.
    Type: Application
    Filed: July 16, 2013
    Publication date: January 23, 2014
    Inventors: Tomokazu HISADA, Yuki Amano, Kazuomi Hirai, Yumi Kawachi, Masatoshi Narita, Tatsumi Hirano, Futoshi Kanemitsu, Yasunari Ashida
  • Patent number: 8436301
    Abstract: In a spectral image formed by two orthogonal axes, one of which is an axis of the amount of energy loss and the other of which is an axis of positional information, by the use of an electron spectrometer and a transmission electron microscope, distortion in the spectral image of a sample to be analyzed is corrected with high efficiency and high accuracy by comparing electron beam positions calculated from a two-dimensional electron beam position image formed by the two orthogonal axes (the axis of the amount of energy loss and the axis of positional information) with reference electron beam positions, and calculating amounts of the distortion based on the differences of the electron beam positions. Method and apparatus are offered which correct distortion in a spectral image with high efficiency and high accuracy, the image being formed by the two orthogonal axes (the axis of the amount of energy loss and the axis of positional information).
    Type: Grant
    Filed: November 11, 2009
    Date of Patent: May 7, 2013
    Assignee: Hitachi High-Technologies Corporation
    Inventors: Shohei Terada, Yoshifumi Taniguchi, Tatsumi Hirano
  • Patent number: 8410457
    Abstract: A sample transfer device is provided which can insert to a charged particle beam apparatus a sample to be observed and analyzed under irradiation of a charged particle beam while suppressing to a minimum the time to expose the sample to the atmospheric environment. The sample transfer device for transferring the sample to be observed and analyzed by irradiating the charged particle beam comprises an expansible hollow member capable of accommodating a sample holder mounting the sample, a fixing member for fixing the sample holder within the expansible hollow member, and a sealing member communicating with the interior of the expansible hollow member to open/close an opening through which the sample holder passes.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: April 2, 2013
    Assignee: Hitachi, Ltd.
    Inventors: Shohei Terada, Tatsumi Hirano, Koichi Watanabe, Yasuichiro Watanabe, Hiromitsu Seino
  • Patent number: 8338798
    Abstract: A sample holder capable of holding samples is provided which comprises a plurality of probes in contact with a sample, fine movement mechanisms for moving the plural probes, and a driver connected to the fine movement mechanisms, wherein the plural fine movement mechanisms move the plural probes independently of one another and the driver moves the plural probes simultaneously.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: December 25, 2012
    Assignee: Hitachi, Ltd.
    Inventors: Shohei Terada, Tatsumi Hirano
  • Patent number: 8284526
    Abstract: According to one embodiment, a TMR effect element includes a ground layer, an antiferromagnetic layer above the ground layer, a first ferromagnetic layer above the antiferromagnetic layer and exchange-coupled to the antiferromagnetic layer, an anti-parallel coupling layer above the first ferromagnetic layer, a second ferromagnetic layer having a magnetic moment coupled anti-parallel to the magnetic moment of the first ferromagnetic layer via the anti-parallel coupling layer, an insulation barrier layer above the second ferromagnetic layer, and a third ferromagnetic layer above the insulation barrier layer. At least a portion of the second ferromagnetic layer and at least a portion of the third ferromagnetic layer on an insulation barrier layer side are comprised of a crystal, and the insulation barrier layer comprises MgO and an oxide material having an independent cubic crystal structure and complete solid solubility with MgO.
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: October 9, 2012
    Assignee: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Koichi Nishioka, Koji Sakamoto, Tatsumi Hirano
  • Publication number: 20110240854
    Abstract: In a spectral image formed by two orthogonal axes, one of which is an axis of the amount of energy loss and the other of which is an axis of positional information, by the use of an electron spectrometer and a transmission electron microscope, distortion in the spectral image of a sample to be analyzed is corrected with high efficiency and high accuracy by comparing electron beam positions calculated from a two-dimensional electron beam position image formed by the two orthogonal axes (the axis of the amount of energy loss and the axis of positional information) with reference electron beam positions, and calculating amounts of the distortion based on the differences of the electron beam positions. Method and apparatus are offered which correct distortion in a spectral image with high efficiency and high accuracy, the image being formed by the two orthogonal axes (the axis of the amount of energy loss and the axis of positional information).
    Type: Application
    Filed: November 11, 2009
    Publication date: October 6, 2011
    Inventors: Shohei Terada, Yoshifumi Taniguchi, Tatsumi Hirano
  • Publication number: 20110180724
    Abstract: A sample transfer device is provided which can insert to a charged particle beam apparatus a sample to be observed and analyzed under irradiation of a charged particle beam while suppressing to a minimum the time to expose the sample to the atmospheric environment. The sample transfer device for transferring the sample to be observed and analyzed by irradiating the charged particle beam comprises an expansible hollow member capable of accommodating a sample holder mounting the sample, a fixing member for fixing the sample holder within the expansible hollow member, and a sealing member communicating with the interior of the expansible hollow member to open/close an opening through which the sample holder passes.
    Type: Application
    Filed: January 27, 2011
    Publication date: July 28, 2011
    Inventors: Shohei TERADA, Tatsumi Hirano, Koichi Watanabe, Yasuichiro Watanabe, Hiromitsu Seino
  • Publication number: 20110141606
    Abstract: According to one embodiment, a TMR effect element includes a ground layer, an antiferromagnetic layer above the ground layer, a first ferromagnetic layer above the antiferromagnetic layer and exchange-coupled to the antiferromagnetic layer, an anti-parallel coupling layer above the first ferromagnetic layer, a second ferromagnetic layer having a magnetic moment coupled anti-parallel to the magnetic moment of the first ferromagnetic layer via the anti-parallel coupling layer, an insulation barrier layer above the second ferromagnetic layer, and a third ferromagnetic layer above the insulation barrier layer. At least a portion of the second ferromagnetic layer and at least a portion of the third ferromagnetic layer on an insulation barrier layer side are comprised of a crystal, and the insulation barrier layer comprises MgO and an oxide material having an independent cubic crystal structure and complete solid solubility with MgO.
    Type: Application
    Filed: November 29, 2010
    Publication date: June 16, 2011
    Applicant: Hitachi Global Storage Technologies Netherlands B.V.
    Inventors: Koichi Nishioka, Koji Sakamoto, Tatsumi Hirano
  • Publication number: 20100320396
    Abstract: A sample holder capable of holding samples is provided which comprises a plurality of probes in contact with a sample, fine movement mechanisms for moving the plural probes, and a driver connected to the fine movement mechanisms, wherein the plural fine movement mechanisms move the plural probes independently of one another and the driver moves the plural probes simultaneously.
    Type: Application
    Filed: June 17, 2010
    Publication date: December 23, 2010
    Inventors: Shohei TERADA, Tatsumi Hirano
  • Patent number: 7544935
    Abstract: A method for evaluating thin films comprises the steps of inputting measurement conditions, generating electron beams from an electron source to condense the electron beams to a specimen by a condenser lens, enlarging the electron beams transmitted by the specimen with imaging lenses to image an enlarged image of the specimen, acquiring elemental maps of the specimen with an element analyzer to display the acquired elemental maps, measuring a length of the elemental maps, and correcting the measurement conditions. Disclosed is an evaluating apparatus that implements the above evaluating method.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: June 9, 2009
    Assignees: Hitachi, Ltd., Hitachi High-Technologies Corporation, Samsung Electronics Co.
    Inventors: Shohei Terada, Kazutoshi Kaji, Tatsumi Hirano, Gyeong-su Park, Se-ahn Song, Jong-bong Park