Patents by Inventor Takashi Naito

Takashi Naito 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: 20150380765
    Abstract: To provide both resistance to reduction and high ion conductivity, a solid electrolyte includes a crystal having a structure expressed as A4-2x-y-zBxSn3-yMyO8-zNz (1?4?2x?y?z<4, A: Li, Na, B: Mg, Ca, Sr, Ba, M: V, Nb, Ta, N: F, Cl) or has a crystal having a structure expressed as A2-1.5x-0.5y-0.5zBxSn3-yMyO8-zNz (0.5?2?1.5x?0.5y?0.5z<2, A: Mg, Ca, B: Sc, Y, Sb, Si, M: V, Nb, Ta, N: F, Cl).
    Type: Application
    Filed: March 15, 2013
    Publication date: December 31, 2015
    Applicant: HITACHI, LTD.
    Inventors: Tadashi FUJIEDA, Jun KAWAJI, Takuya AOYAGI, Yusuke ASARI, Takashi NAITO, Hirotsugu TAKIZAWA, Yamato HAYAHI, Yuya NAKATANI
  • Patent number: 9224517
    Abstract: A paste composition for an electrode, the paste composition comprising: phosphorous-containing copper alloy particles in which the content of phosphorous is from 6% by mass to 8% by mass; glass particles; a solvent; and a resin.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: December 29, 2015
    Assignee: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Shuichiro Adachi, Masato Yoshida, Takeshi Nojiri, Mitsunori Iwamuro, Keiko Kizawa, Takuya Aoyagi, Hiroki Yamamoto, Takashi Naito, Takahiko Kato
  • Publication number: 20150372298
    Abstract: An object of the present invention is to enhance energy density and output density of an all-solid state ion secondary battery. To achieve the object, the present invention provides an all-solid state ion secondary battery in which a solid electrolyte layer is joined between a positive electrode active material layer and a negative electrode active material layer, characterized in that at least one of the positive electrode active material layer and the negative electrode active material layer is formed by binding active material particles and solid electrolyte particles together through an ion-conductive and ferroelectric substance.
    Type: Application
    Filed: February 26, 2013
    Publication date: December 24, 2015
    Applicant: HITACHI, LTD.
    Inventors: Tadashi FUJIEDA, Jun KAWAJI, Takuya AOYAGI, Takashi NAITO
  • Patent number: 9215635
    Abstract: During a period of parallel-like radio communication with two or more first base stations, the first base station designates a second base station correlated with one of the two or more first base stations, and temporarily suspends the radio communication in accordance with a first communications standard to issue, to a mobile station, a request of measurement for the designated second base station. The first base station receives a result of the measurement for the designated second base station. The first base station notifies the mobile station of a handover from the first communications standard to a second communications standard, and also notifies the mobile station of a request for starting a coordination mode in which the two or more second base stations including the designated second base station establish communication with the mobile station in coordination with each other.
    Type: Grant
    Filed: May 30, 2011
    Date of Patent: December 15, 2015
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Mitsuru Sakamoto, Akira Ohshima, Tadashi Shimonabe, Yuhsuke Takagi, Takashi Naito
  • Publication number: 20150337106
    Abstract: The purpose of the present invention is to provide a low-melting-point glass resin composite material with which the heat resistance and heat conductivity of an insulating resin can be improved. The low-melting-point glass resin composite material includes: a lead-free low-melting-point glass composition that contains Ag2O, V2O5, and TeO2, and in which the total content of Ag2O, V2O5, and TeO2 is 75 mass % or more; and a resin composition having a 5% thermal weight reduction temperature equal to or greater than a softening point temperature of the low-melting-point glass composition.
    Type: Application
    Filed: December 26, 2012
    Publication date: November 26, 2015
    Inventors: Yuri KAJIHARA, Satoru AMOU, Takashi NAITO, Yuichi SAWAI, Motomune KODAMA
  • Patent number: 9196563
    Abstract: Bondability and heat conductivity of a bonded body in which some of metal, ceramic, or semiconductor are bonded to each other are improved. In the bonded body in which a first member and a second member each comprise one of metal, ceramic, or semiconductor are bonded to each other, the second member is bonded to the first member by way of an adhesive member disposed to the surface of the first member, and the adhesive member contains a V2O5-containing glass and metal particles.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: November 24, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Yuichi Sawai, Takashi Naito, Takuya Aoyagi, Tadashi Fujieda, Mutsuhiro Mori
  • Publication number: 20150279700
    Abstract: The deterioration of the resin base materials in the bonded structure is prevented. In a bonded structure containing two base materials at least one of which is a resin, an oxide which contains either P or Ag, V, and Te, and are formed by softening on the two base materials, bond the two base materials. In addition, in a method for producing a bonded structure containing two base materials at least one of which is a resin containing: supplying an oxide containing either P or Ag, V, and Te to the base material; and applying electromagnetic waves to the oxide, whereby the oxide, which soften on the substrates, bond the two base material.
    Type: Application
    Filed: November 9, 2012
    Publication date: October 1, 2015
    Inventors: Motomune Kodama, Takashi Naito, Yuichi Sawai, Tadashi Fujieda, Takuya Aoyagi, Masanori Miyagi
  • Publication number: 20150270508
    Abstract: In an electronic component including two substrates at least one of which is transparent, an organic member arranged between these substrates, and a bonding portion located onto respective outer circumferential portions of the two substrates, this bonding portion includes a low-melting glass and filler particles. The low-melting glass includes vanadium oxide. The filler particles include a low thermally-expandable material, and an oxide containing a bivalent transition metal as a constituent element. The oxide is dispersed in the low thermally-expandable material, and the low thermally-expandable material has a thermal expansion coefficient of 5×10?7/° C. or less in a temperature range from 30 to 250° C. This invention makes it possible to heat the filler particles by irradiation with a laser to give the electronic component which is a component having a highly reliable bonding portion.
    Type: Application
    Filed: October 9, 2013
    Publication date: September 24, 2015
    Applicant: Hitachi Chemical Company, Ltd.
    Inventors: Takashi Naito, Shinichi Tachizono, Kei Yoshimura, Yuji Hashiba, Takuya Aoyagi, Masanori Miyagi, Motomune Kodama, Yuichi Sawai, Tadashi Fujieda, Takeshi Tsukamoto, Hajime Murakami
  • Patent number: 9142708
    Abstract: Disclosed is a constitution formed from an oxide of an element having a smaller work function than aluminum. This oxide is comprises an oxide of vanadium (V), an oxide of an alkaline earth metal and an oxide of an alkali metal. The elements for the alkaline earth metal are comprise one or more elements out of the elements calcium (Ca), strontium (Sr) and barium (Ba) and at least contain barium. The elements for the alkali metal include at least one or more of sodium (Na), potassium (K), rubidium (Rb) and cesium (Cs). When the element vanadium is included as vanadium pentoxide (V2O5), the vanadium pentoxide content is 40-70 wt %. Thus, a glass composition for aluminum electrode wiring with an apparent work function for electrode wiring that is smaller than the work function for aluminum (Al) can be provided without the inclusion of lead.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: September 22, 2015
    Assignees: HITACHI, LTD., HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Takashi Naito, Takuya Aoyagi, Shinichi Tachizono, Kei Yoshimura, Yuji Hashiba
  • Patent number: 9121901
    Abstract: An apparatus includes a plurality of test heads to which probe cards are electrically connected; a wafer tray which is able to hold a semiconductor wafer; and an alignment apparatus which positions the semiconductor wafer held on the wafer tray relatively with respect to the probe card so as to make the wafer tray face the probe card. The wafer tray has a pressure reducing mechanism which pulls the wafer tray toward the probe card. The alignment apparatus is configured to be able to move along the array direction of the test heads.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: September 1, 2015
    Assignee: ADVANTEST CORPORATION
    Inventors: Toshiyuki Kiyokawa, Takashi Naito
  • Publication number: 20150221845
    Abstract: In a thermoelectric conversion device, support substrates (13, 14), electrodes (11, 12) formed on the support substrates and thermoelectric conversion parts (7, 10) formed on the electrodes and containing semiconductor glass are disposed. The semiconductor glass is non-lead glass containing vanadium, and the electrodes contain any of Al, Ti, Ti nitride, W, W nitride, W silicide, Ta, Cr and Si. This constitution makes it possible to provide a device structure which can be produced by an inexpensive production process, uses a composite material with an excellent thermoelectric conversion characteristic and can solve the characteristic problem of the composite material. As a result, it is possible to provide a thermoelectric conversion device with excellent characteristics and high reliability at a low cost.
    Type: Application
    Filed: August 31, 2012
    Publication date: August 6, 2015
    Inventors: Chisaki Takubo, Hideaki Takano, Kengo Asai, Takashi Naito, Tadashi Fujieda, Yuichi Sawai, Noriyuki Sakuma
  • Publication number: 20150187510
    Abstract: An electronic component has an organic member between two transparent substrates, in which outer peripheral portions of the two transparent substrates are bonded by a sealing material containing to melting glass. The low melting glass contains vanadium oxide, tellurium oxide, iron oxide and phosphoric acid, and satisfies the following relations (1) and (2) in terms of oxides. The sealing material is formed of a sealing material paste which contains the low melting glass, a resin binder and a solvent, the low melting glass containing vanadium oxide, tellurium oxide, iron oxide and phosphoric acid, and satisfies the following relations (1) and (2) in terms of the oxides. Thereby, thermal damages to an organic element or an organic material contained in the electronic component can be reduced and an electronic component having a glass bonding layer of high reliability can be produced efficiently.
    Type: Application
    Filed: July 25, 2013
    Publication date: July 2, 2015
    Inventors: Takashi Naito, Shinichi Tachizono, Kei Yoshimura, Yuji Hashiba, Motomune Kodama, Masanori Miyagi, Takuya Aoyagi, Yuichi Sawai, Tadashi Fujieda, Takeshi Tsukamoto, Hajime Murakami
  • Patent number: 9048056
    Abstract: A glass composition according to the present invention comprises: transition metals; phosphorus; barium; and zinc, the transition metals including: vanadium; and tungsten and/or iron, the glass composition not containing substances included in the JIG level A and B lists, an softening point of the glass composition being from 430 to 530° C., an average linear expansion coefficient of the glass composition being from 6 to 9 ppm/° C. at temperatures from 30 to 250° C.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: June 2, 2015
    Assignee: HITACHI POWDERED METALS CO., LTD.
    Inventors: Kei Yoshimura, Shinichi Tachizono, Yuji Hashiba, Takashi Naito, Takuya Aoyagi
  • Patent number: 9023522
    Abstract: A cathode for a lithium-ion secondary battery is provided, which not only efficiently absorbs oxygen released from a solid solution based cathode active material when initial charging is applied but prevents a cathode energy density from lowering. Further, a lithium-ion secondary battery, a vehicle and a power storage system equipped with the lithium-ion secondary battery are provided. The cathode for a lithium-ion secondary battery comprises a cathode active material represented by the general formula: xLi2MO3-(1?x)LiM?O2 (where 0<x<1; M is at least one element selected from the group of Mn, Ti and Zr; and M? is at least one element selected from the group of Ni, Co, Mn, Fe, Ti, Zr, Al, Mg, Cr and V), and an oxygen absorbing substance having both oxygen absorbing and lithium-ion intercalation/de-intercalation abilities. Herein, the oxygen absorbing substance is disposed on the cathode active material.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: May 5, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Akira Gunji, Shin Takahashi, Takashi Naito, Tadashi Fujieda
  • Patent number: 8951436
    Abstract: A lithium ion secondary battery has a high cycle retention rate, and has its battery capacity increased. A positive electrode active material is used which includes a crystal phase having a structure formed by collecting a plurality of crystallites, and powder particles containing amorphous phases and formed between the crystallites. The amorphous phases and contain one or more kinds of metal oxides selected from the group consisting of vanadium oxide, iron oxide, manganese oxide, nickel oxide and cobalt oxide. The crystal phase and the amorphous phase and are capable of intercalation and deintercalation of lithium ions.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: February 10, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Yuji Hashiba, Kei Yoshimura, Shinichi Tachizono, Takashi Naito, Takuya Aoyagi, Tadashi Fujieda
  • Patent number: 8945436
    Abstract: Provided is a conductive paste which contains an inexpensive metal, such as copper or aluminum, as an electrode wiring material and has oxidation resistance that enables the paste to withstand a high-temperature process performed in an oxidizing atmosphere and an electronic part equipped with electrode wiring formed from the paste. The electronic part in accordance with the present invention is equipped with electrode wiring that comprises a conductive glass phase containing transition metals and phosphorus, metal particles, and none of the substances prohibited by the RoHS directive. The electronic part is characterized in that each of the transition metals contained in the conductive glass phase is present in the state of having a plurality of oxidation numbers and that the proportion of the atoms which have the largest oxidation number for each transition metal satisfies a given relationship.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: February 3, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Takuya Aoyagi, Takashi Naito, Hiroki Yamamoto, Takahiko Kato
  • Publication number: 20150028333
    Abstract: A metal matrix composite having high corrosion resistance even if the coating film deposit amount is low is obtained. A metal matrix composite includes a metal or alloy substrate coated with a molten transition metal oxide glass, wherein the transition metal oxide glass has an n-type polarity. Further, a method for producing a metal matrix composite includes a step of applying a paste containing a transition metal oxide glass, an organic binder, and an organic solvent onto the surface of a metal or alloy substrate, and a step of forming a glass coating film on the substrate by heating to and maintaining a temperature equal to or higher than the softening point of the transition metal oxide glass after the application step, wherein the transition metal oxide glass has an n-type polarity.
    Type: Application
    Filed: January 15, 2013
    Publication date: January 29, 2015
    Applicant: HITACHI, LTD.
    Inventors: Tadashi Fujieda, Takashi Naito, Takuya Aoyagi, Yuichi Sawai
  • Publication number: 20150020879
    Abstract: To improve the gas barrier property of a laminate containing a substrate containing resin or rubber and oxide glass. A laminate 8 comprising a substrate 9 containing resin or rubber and oxide glass 10 formed at least on one surface of the substrate, in which the oxide glass softens and fluidizes at a temperature equal to or lower than the softening temperature of the substrate and adheres to the substrate.
    Type: Application
    Filed: November 21, 2012
    Publication date: January 22, 2015
    Applicant: Hitachi, Ltd.
    Inventors: Yuichi Sawai, Takashi Naito, Takuya Aoyagi, Tadashi Fujieda, Hajime Murakami, Hiroshi Yoshida, Masahiko Ogino, Akihiro Miyauchi
  • Publication number: 20150017409
    Abstract: The gas barrier property of a laminate constituted by a base material containing a resin or a rubber and an oxide glass is improved. A composite member containing an oxide glass 2 formed as a layer densely on a base material 1 containing a resin or a rubber, in which the oxide glass is bonded to the base material by irradiating the oxide glass with an electromagnetic wave and softening and fluidizing the oxide glass.
    Type: Application
    Filed: November 21, 2012
    Publication date: January 15, 2015
    Applicant: Hitachi, Ltd.
    Inventors: Takashi Naito, Tadashi Fujieda, Takuya Aoyagi, Yuichi Sawai, Hajime Murakami, Masahiko Ogino, Akihiro Miyauchi, Hiroshi Yoshida
  • Publication number: 20150008573
    Abstract: Bondability and heat conductivity of a bonded body in which some of metal, ceramic, or semiconductor are bonded to each other are improved. In the bonded body in which a first member and a second member each comprise one of metal, ceramic, or semiconductor are bonded to each other, the second member is bonded to the first member by way of an adhesive member disposed to the surface of the first member, and the adhesive member contains a V2O5-containing glass and metal particles.
    Type: Application
    Filed: November 21, 2012
    Publication date: January 8, 2015
    Inventors: Yuichi Sawai, Takashi Naito, Takuya Aoyagi, Tadashi Fujieda, Mutsuhiro Mori