Patents by Inventor Tadashi Fujieda

Tadashi Fujieda 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: 20180019096
    Abstract: The purpose of the present invention is to provide a charged particle beam device that exhibits high performance due to the use of vanadium glass coatings, and to provide a method of manufacturing a component for a charged particle beam device. Specifically provided is a charged particle beam device using a vacuum component characterized by comprising a metal container, the interior space of which is evacuated to form a high vacuum, and coating layers formed on the surface on the interior space-side of the metal container, wherein the coating layers are vanadium-containing glass, which is to say an amorphous substance.
    Type: Application
    Filed: January 21, 2016
    Publication date: January 18, 2018
    Inventors: Takashi ICHIMURA, Hiroyuki ITO, Shinichi KATO, Hisaya MURAKOSHI, Tadashi FUJIEDA, Tatsuya MIYAKE, Takashi NAITOU, Takuya AOYAGI, Kenji TANIMOTO
  • Patent number: 9824900
    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: Grant
    Filed: November 9, 2012
    Date of Patent: November 21, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Motomune Kodama, Takashi Naito, Yuichi Sawai, Tadashi Fujieda, Takuya Aoyagi, Masanori Miyagi
  • Patent number: 9796821
    Abstract: Mechanical strength of a composite material is enhanced by a simple process. In a composite material comprising a resin or a rubber and an oxide glass, the resin or the rubber is dispersed in the oxide glass, or the oxide glass is dispersed in the resin or the rubber. The composite material has a function that the oxide glass is softened and fluidized by electromagnetic waves.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: October 24, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Takuya Aoyagi, Takashi Naito, Tadashi Fujieda, Yuichi Sawai, Hajime Murakami, Hiroshi Yoshida, Akihiro Miyauchi, Masahiko Ogino
  • Publication number: 20170301883
    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 low 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: June 28, 2017
    Publication date: October 19, 2017
    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: 9789568
    Abstract: An aluminum wire body, in which an aluminum or aluminum alloy electric wire and a metal to be joined are joined by solder, wherein the solder includes an oxide glass including vanadium and a conducting particle. Preferably, the conducting particle contained in the solder is 90% by volume or less and the oxide glass is 20% by volume to 90% by volume. Further preferably, the oxide glass includes 40% by mass or more of Ag2O in terms of oxides and the glass transition point is 180° C. or less.
    Type: Grant
    Filed: February 11, 2014
    Date of Patent: October 17, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Takuya Aoyagi, Motomune Kodama, Takashi Naito, Tadashi Fujieda, Yuichi Sawai, Masanori Miyagi, Haruo Akahoshi, Norihisa Iwasaki
  • Patent number: 9728341
    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: Grant
    Filed: July 25, 2013
    Date of Patent: August 8, 2017
    Assignee: Hitachi Chemical Company, Ltd.
    Inventors: Takashi Naito, Shinichi Tachizono, Kei Yoshimura, Yuji Hashiba, Motomune Kodama, Masanori Miyagi, Takuya Aoyagi, Yuichi Sawai, Tadashi Fujieda, Takeshi Tsukamoto, Hajime Murakami
  • Publication number: 20170209922
    Abstract: An alloy structure which has high uniformity in the distribution of the element composition and the mechanical strength and excellent high-temperature strength and corrosion resistance, contains Fe and at least four elements, which are selected from the group consisting of elements from atomic number 13 to atomic number 79, included in Group 3 to Group 16 of the periodic table of the elements, and have a ratio of the atomic radius to an Fe atom of 0.83 or more but 1.17 or less, each of the elements in an atomic concentration range of 5 at % or more but 30 at % or less, a difference in atomic concentration among the at least four elements and Fe is in a range of less than 3 at %, and the alloy structure has, as a main crystal, a column crystal in which the at least four elements and Fe are solid-dissolved.
    Type: Application
    Filed: July 17, 2015
    Publication date: July 27, 2017
    Applicant: HITACHI, LTD.
    Inventors: Takahiko KATO, Kousuke KUWABARA, Tadashi FUJIEDA, Kinya AOTA, Isamu TAKAHASHI, Kenji YAMAGA, Hiroyuki SATAKE, Hajime MURAKAMI
  • Publication number: 20170209954
    Abstract: An alloy structure has an arbitrary shape dimension which has high uniformity in the distribution of the element composition. The alloy structure contains Fe and at least four elements, which are selected from the group consisting of elements from atomic number 13 to atomic number 79 included in Group 3 to Group 16 of the periodic table of the elements and have a ratio of the atomic radius to an Fe atom of 0.83 or more but 1.17 or less, each of Fe and the four elements is contained in an atomic concentration range of 5 at % or more but 30 at % or less, a difference in atomic concentration between at least four elements among the at least four elements and Fe is in a range of less than 3 at %, and the alloy structure has, a column crystal in which the at least four elements and Fe are solid-dissolved.
    Type: Application
    Filed: July 17, 2015
    Publication date: July 27, 2017
    Applicant: HITACHI, LTD.
    Inventors: Takahiko KATO, Kousuke KUWABARA, Tadashi FUJIEDA, Kinya AOTA, Isamu TAKAHASHI, Hiroyuki SATAKE, Kenji YAMAGA, Hajime MURAKAMI
  • Patent number: 9708460
    Abstract: Mechanical strength of a composite material is enhanced by a simple process. In a composite material comprising a resin or a rubber and an oxide glass, the resin or the rubber is dispersed in the oxide glass, or the oxide glass is dispersed in the resin or the rubber, and the oxide glass is softened and fluidized by heating at or lower than a heat decomposition temperature of the resin or the rubber.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: July 18, 2017
    Assignee: HITACHI, LTD.
    Inventors: Tadashi Fujieda, Takashi Naito, Takuya Aoyagi, Yuichi Sawai, Hajime Murakami, Hiroshi Yoshida, Akihiro Miyauchi, Masahiko Ogino
  • Patent number: 9614178
    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: Grant
    Filed: October 9, 2013
    Date of Patent: April 4, 2017
    Assignee: 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: 9543265
    Abstract: Disclosed is a jointed body wherein multiple base members are jointed to each other through a jointing layer, and at least one of the base members is a base member of a ceramic material, semiconductor or glass. The joint material layer contains a metal and an oxide. The oxide contains V and Te, and is present between the metal and the base members. Disclosed is also a joint material in the form of a paste containing an oxide glass containing V and Te, metal particles, and a solvent; in the form of a foil piece or plate in which particles of an oxide glass containing V and Te are embedded; or in the form of a foil piece or plate containing a layer of an oxide glass containing V and Te, and a layer of a metal.
    Type: Grant
    Filed: February 12, 2014
    Date of Patent: January 10, 2017
    Assignee: Hitachi, Ltd.
    Inventors: Motomune Kodama, Takashi Naito, Tadashi Fujieda, Yuichi Sawai, Takuya Aoyagi, Masanori Miyagi
  • Patent number: 9490380
    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: Grant
    Filed: January 15, 2013
    Date of Patent: November 8, 2016
    Assignee: HITACHI, LTD.
    Inventors: Tadashi Fujieda, Takashi Naito, Takuya Aoyagi, Yuichi Sawai
  • Publication number: 20160297706
    Abstract: There is disclosed a heat-insulating member including a pair of substrates and an airtight sealing part, in which the airtight sealing part is formed in an outer peripheral part between the pair of substrates to form a space between the pair of substrates, the space being in a vacuum or reduced pressure state, a sealing material that forms the airtight sealing part includes a low-melting glass, and the low-melting glass contains a vanadium oxide, barium oxide, phosphorus oxide, and tungsten oxide, in which the following two relational expressions are satisfied in terms of oxide contents: V2O5+BaO+P2O5+WO3?90 and V2O5>BaO>P2O5>WO3 (wherein unit: mol %). Thereby, influence on environmental impact can be reduced and maintenance of airtightness and an improvement in acid resistance can be achieved.
    Type: Application
    Filed: November 28, 2014
    Publication date: October 13, 2016
    Applicant: HITACHI CHEMICAL COMPANY, LTD.
    Inventors: Takashi NAITO, Shinichi TACHIZONO, Kei YOSHIMURA, Yuji HASHIBA, Takuya AOYAGI, Motomune KODAMA, Taigo ONODERA, Tadashi FUJIEDA
  • Publication number: 20160181657
    Abstract: A solid electrolyte comprises a ramsdellite-type crystal structure and has low activation energy of lithium ions and good lithium ion conductivity. The solid electrolyte is represented by the general formula Li4x?2a?3b?c?2dSn4?x?c?dM(II)aM(III)bM(V)cM(VI)dO8 [wherein M(II) is a divalent cation, M(III) is a trivalent cation, M(V) is a pentavalent cation, and M(VI) is a hexavalent cation, 0?x?1.33], wherein in the general formula, 0<a+b+c+d, 0?a+b?x, 0?c+d<0.9, and 3x?a?2b?c?2d?2. The all-solid-state battery includes the solid electrolyte in at least one layer of the positive electrode layer, negative electrode layer, and solid electrolyte layer. The method of making the solid electrolyte includes a step of preparing a mixed powder as a raw material and heating with microwave irradiation.
    Type: Application
    Filed: December 15, 2015
    Publication date: June 23, 2016
    Applicant: HITACHI, LTD.
    Inventors: Jun KAWAJI, Yusuke ASARI, Tadashi FUJIEDA, Hirotugu TAKIZAWA, Yamato HAYASHI
  • 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
  • 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: 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: 20150295224
    Abstract: Disclosed herein is a method for producing an electrode includes a step of reducing lithium-vanadium oxide by heating in reducing gas, a step of causing the reduced lithium-vanadium oxide to deliquesce, a step of mixing the deliquesced lithium oxide with an active material so as to prepare an electrode mixture, and a step of making the electrode mixture into an electrode by virtue of molding after heat treatment to the electrode mixture. The method for producing an all-solid battery further includes a step of bonding the thus-made electrode to a solid electrode layer in such a way that the solid electrode layer is interposed between the electrode and either of cathode and anode to be paired with the electrode.
    Type: Application
    Filed: April 13, 2015
    Publication date: October 15, 2015
    Applicant: HITACHI, LTD.
    Inventors: Taigo ONODERA, Tadashi FUJIEDA, Jun KAWAJI
  • 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