Patents Assigned to Hitachi Metals, Ltd.
  • Patent number: 10439296
    Abstract: An antenna device includes a plurality of antenna elements, a metal member integrally including a first wall and a plurality of second walls that are arranged in parallel to each other and perpendicularly extend from one surface of the first wall, and circuit boards that are respectively housed in substrate-housing spaces as gaps between the adjacent second walls and mount feeder circuits for feeding power to the plurality of antenna elements.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: October 8, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Seiji Kado, Tomoyuki Ogawa, Satoshi Yoshihara
  • Patent number: 10429340
    Abstract: A sensor element includes a sensor FET provided in a main surface of a semiconductor substrate, a cavity provided in the sensor FET and into which a detection target gas is introduced, and an ion pump provided over the cavity. By laminating the ion pump over the sensor FET via the cavity, a part of a front surface of a gate layer is exposed to the cavity, and a part of a lower surface of an ion pump electrode is exposed to the cavity. When the gate layer comes into contact with the detection target gas, a work function changes, so that gas concentration can be detected.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: October 1, 2019
    Assignee: Hitachi Metals, Ltd.
    Inventors: Yoshitaka Sasago, Shuntaro Machida, Hitoshi Nakamura, Takahiro Odaka
  • Patent number: 10431348
    Abstract: A pressure sensor includes an insulator having a hollow portion; and a plurality of electrical conductors that have been disposed apart from each other along the inner surface facing the hollow portion of the insulator. The insulator comprises an insulating resin composition made of a material which does not need cross-linking, the plurality of electrical conductors comprise an electroconductive resin composition made of a material which does not need cross-linking, the insulating resin composition and the electroconductive resin composition comprise a process oil, and a mass percentage concentration of the process oil in the electroconductive resin composition is higher than a mass percentage concentration of the process oil in the insulating resin composition.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: October 1, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Akinari Nakayama, Takashi Aoyama
  • Publication number: 20190289738
    Abstract: The method manufactures a hermetic sealing lid member used for an electronic component housing package including an electronic component arrangement member on which an electronic component is arranged. The method includes forming a clad material in which a silver brazing layer that contains Ag and Cu and a first Fe layer arranged on the silver brazing layer and made of Fe or an Fe alloy are bonded to each other by roll-bonding a silver brazing plate that contains Ag and Cu and a first Fe plate made of Fe or an Fe alloy to each other and performing first heat treatment for diffusion annealing; softening the clad material by performing second heat treatment; and forming the hermetic sealing lid member in a box shape including a recess portion by bending the softened clad material.
    Type: Application
    Filed: June 6, 2019
    Publication date: September 19, 2019
    Applicant: HITACHI METALS, LTD.
    Inventors: Masayuki Yokota, Masaharu Yamamoto
  • Patent number: 10418160
    Abstract: Provided are: a metal powder core having a configuration suitable for core loss reduction and strength improvement; a coil component employing this; and a fabrication method for metal powder core. The metal powder core is obtained by dispersing Cu powder among soft magnetic material powder comprising pulverized powder of Fe-based soft magnetic alloy and atomized powder of Fe-based soft magnetic alloy and then by performing compaction. The fabrication method for metal powder core includes: a mixing step of mixing together soft magnetic material powder containing thin-leaf shaped pulverized powder of Fe-based soft magnetic alloy and atomized powder of Fe-based soft magnetic alloy, Cu powder, and a binder and thereby obtaining a mixture; a forming step of performing pressure forming on the mixture obtained at the mixing step; and a heat treatment step of annealing a formed article obtained at the forming step.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: September 17, 2019
    Assignee: Hitachi Metals, Ltd.
    Inventors: Tetsuro Kato, Shin Noguchi, Kazunori Nishimura
  • Patent number: 10416200
    Abstract: A current sensor includes a bus bar through which an electric current to be measured flows, a first magnetic sensing element including a first magneto-sensitive portion including a magneto-resistive element, and a second magnetic sensing element including a second magneto-sensitive portion including a magneto-resistive element. Strength of a magnetic field generated by the electric current sensed by the first magneto-sensitive portion is different from a strength of the magnetic field sensed by the second magneto-sensitive portion. A first bias magnetic field is applied to the first magneto-sensitive portion and a second bias magnetic field in a direction opposite to a direction of the first bias magnetic field is applied to the second magneto-sensitive portion.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: September 17, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Naoki Futakuchi, Ken Okuyama
  • Patent number: 10418171
    Abstract: A step of, while an RLM alloy powder (where RL is Nd and/or Pr; M is one or more elements selected from among Cu, Fe, Ga, Co, Ni and Al) and an RH compound powder (where RH is Dy and/or Tb; and the RH compound is an RH fluoride and/or an RH oxyfluoride) are present on the surface of a sintered R-T-B based magnet, performing a heat treatment at a sintering temperature of the sintered R-T-B based magnet or lower is included. The RLM alloy contains RL in an amount of 50 at % or more, and the melting point of the RLM alloy is equal to or less than the temperature of the heat treatment. The heat treatment is performed while the RLM alloy powder and the RH compound powder are present on the surface of the sintered R-T-B based magnet at a mass ratio of RLM alloy:RH compound=9.6:0.4 to 5:5.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: September 17, 2019
    Assignee: HITACHI METALS, LTD.
    Inventor: Shuji Mino
  • Publication number: 20190278883
    Abstract: There is provided a method of predicting a thermal fatigue life of a mold.
    Type: Application
    Filed: March 8, 2018
    Publication date: September 12, 2019
    Applicant: Hitachi Metals, Ltd.
    Inventors: Haruyuki MORI, Masataka SATO, Masayuki NAGASAWA
  • Publication number: 20190275601
    Abstract: A non-magnetic member 32, a first magnetic member 34 and a second magnetic member 36 are prepared. The first magnetic member 34 and the second magnetic member 36 are connected to the non-magnetic member 32. Then, a first bonding portion 56 and which bonds the non-magnetic member 32 and the first magnetic member 34 to each other, and a second bonding portion 60 which bonds the non-magnetic member 32 and the second magnetic member 36 to each other are formed. A hot isostatic pressing process is performed to the non-magnetic member 32, the first magnetic member 34 and the second magnetic member 36 to establish diffusion-bond. Thereafter, the non-magnetic member 32, the first magnetic member 34 and the second magnetic member 36 are hollowed, and the first bonding portion 56 and the second bonding portion 60 are removed.
    Type: Application
    Filed: September 28, 2017
    Publication date: September 12, 2019
    Applicant: HITACHI METALS, LTD.
    Inventor: Yoshinobu NAKAMURA
  • Patent number: 10410762
    Abstract: A cable includes an assembled article formed by twisting a plurality of electric wires, a tape member spirally wound around the assembled article, and a sheath covering around the tape member. The sheath includes an injection molded body including an urethane resin. The tape member includes a non-woven fabric tape including a polyester, a polypropylene, an aramid fiber, a nylon, an acryl fiber, or a glass fiber and an air permeability defined by the Frazier method of not less than 30 cm3/cm2·sec. A twist direction of the assembled article is opposite to a winding direction of the non-woven fabric tape.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: September 10, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Yoshikazu Hayakawa, Tomoyuki Murayama, Hirotaka Eshima, Fumihito Oka, Takahiro Futatsumori
  • Patent number: 10407747
    Abstract: Provided are a cold working tool material with which high hardness can be obtained in a broad range of tempering temperatures, and a cold working tool manufacturing method using same. The present invention is a cold working tool material comprising a steel component composition that contains, in mass %, C: 0.65-2.40%, Cr: 5.0-15.0%, Mo and W alone or combined (Mo+½W): 0.50-4.00%, V: 0.10-1.50%, and N: greater than 0.0300% to 0.0800%, in which martensitic structure can be adjusted by quenching, and in which, in a 90 ?m long 90 ?m wide region of a cross-sectional structure that does not contain carbides with equivalent circle diameters exceeding 5.0 ?m, the number density of carbides A with equivalent circle diameters greater than 0.1 ?m to 2.0 ?m is at least 9.0×105/mm2 and the number density of carbides B with equivalent circle diameters greater than 0.1 ?m to 0.4 ?m is at least 7.5×105/mm2.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: September 10, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Tatsuya Shouji, Setsuo Mishima, Yukio Shinji, Katsufumi Kuroda
  • Patent number: 10407754
    Abstract: A process for manufacturing a reclaimed alloy material includes the steps of crushing a magnetic core including an amorphous alloy ribbon; putting a prepared organic solvent and crushed pieces obtained in the step of crushing into a container and putting the crushed pieces into contact with the organic solvent in the container; selectively discharging the organic solvent from the container after putting the crushed pieces into contact with the organic solvent; and evaporating, after discharging the organic solvent, the organic solvent remaining in the container. The crushed pieces, removed from the container after the organic solvent is evaporated, is reused as a reclaimed alloy material.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: September 10, 2019
    Assignee: Hitachi Metals, Ltd.
    Inventors: Kohei Miyano, Morifumi Kuroki
  • Patent number: 10410776
    Abstract: A step of, while an RLM alloy powder (where RL is Nd and/or Pr; M is one or more elements selected from among Cu, Fe, Ga, Co, Ni and Al) and an RH oxide powder (where RH is Dy and/or Tb) are present on the surface of a sintered R-T-B based magnet, performing a heat treatment at a sintering temperature of the sintered R-T-B based magnet or lower is included. The RLM alloy contains RL in an amount of 50 at % or more, and the melting point of the RLM alloy is equal to or less than the temperature of the heat treatment. The heat treatment is performed while the RLM alloy powder and the RH oxide powder are present on the surface of the sintered R-T-B based magnet at a mass ratio of RLM alloy:RH oxide=9.6:0.4 to 5:5.
    Type: Grant
    Filed: December 4, 2015
    Date of Patent: September 10, 2019
    Assignee: HITACHI METALS, LTD.
    Inventor: Shuji Mino
  • Publication number: 20190272937
    Abstract: A magnetic core has a high initial permeability and a small core loss, reducing a core loss at high frequencies; and a coil component including the same. This magnetic core is formed by binding a plurality of Fe-based alloy particles containing Al via an oxide layer containing an Fe oxide. In an X-ray diffraction spectrum of the magnetic core measured using Cu-K? characteristic X-rays, a peak intensity ratio (P1/P2) of peak intensity P1 of a diffraction peak derived from the Fe oxide having a corundum structure appearing in the vicinity of 2?=33.2° to peak intensity P2 of a diffraction peak derived from the Fe-based alloy having a bcc structure appearing in the vicinity of 2?=44.7° is 0.010 or less (excluding 0). A superlattice peak intensity of an Fe3Al ordered structure is at most a noise level within a range of 2?=20° to 40°.
    Type: Application
    Filed: September 15, 2017
    Publication date: September 5, 2019
    Applicant: HITACHI METALS, LTD.
    Inventors: Toshio MIHARA, Tetsuroh KATOH, Kazunori NISHIMURA, Shin NOGUCHI
  • Patent number: 10403948
    Abstract: A phase shifter includes a signal conductor constituting a transmission line for a signal transmitted through an antenna element, a dielectric plate including a dielectric material disposed to face to the signal conductor, and a mobile mechanism for moving the dielectric plate. A facing area between the signal conductor and the dielectric plate is changed by a movement of the dielectric plate, to change a phase of the signal transmitted through the signal conductor. The dielectric plate includes a transformer unit for impedance matching between an overlapped portion in which the signal conductor faces to the dielectric plate and a non-overlapped portion in which the signal conductor does not face to the dielectric plate.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: September 3, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Shinsuke Murano, Ryoji Matsubara, Kei Kawano
  • Patent number: 10399074
    Abstract: A ceramic honeycomb structure comprising porous cell walls defining large numbers of flow paths, the cell walls having (a) porosity of 55% or more and less than 65%, and (b) 35,000/mm3 or more of substrate branches, wherein the number of substrate branches is defined by the number of branch points (including connecting points of 3 or more branches and connecting points of different-width branches) per a unit volume, in a network structure obtained by the skeletonization of the three-dimensional structure of cell wall substrates determined by X-ray CT.
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: September 3, 2019
    Assignee: HITACHI METALS, LTD.
    Inventor: Shunji Okazaki
  • Patent number: 10399167
    Abstract: An electrical discharge machining electrode wire includes a core including a copper or a copper alloy, and a covering layer that covers a periphery of the core and includes a zinc. The covering layer includes an outermost layer consisting of an ?-phase of a copper-zinc based alloy. The outermost layer has a Cu concentration of 12 to 20 mass % and a variation range within 5 mass % in the Cu concentration in a longitudinal direction of the electrode wire.
    Type: Grant
    Filed: January 7, 2015
    Date of Patent: September 3, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Takayuki Tsuji, Hiromitsu Kuroda, Tetsuya Tokumitsu, Takamitsu Kimura, Yosuke Shiba, Hiroshi Matsuzaki, Yuichi Komuro, Shingo Amamiya
  • Patent number: 10400174
    Abstract: In a multi-layer insulated wire including: a conductor; an inner layer formed in periphery of the conductor; and an outer layer formed in periphery of the inner layer, the inner layer is made of a resin composition containing a base polymer containing polyolefin as a main component, and the outer layer is made of a resin composition containing a base polymer containing polyolefin as a main component so as to contain 80 or more and 250 or less parts by mass of metallic hydroxide per 100 parts by mass of the base polymer. The multi-layer insulated wire having an expansion start temperature of the outer layer that is equal to or lower than 344° C. is used.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: September 3, 2019
    Assignee: Hitachi Metals, Ltd.
    Inventors: Tsuyoshi Miura, Tamotsu Kibe, Makoto Iwasaki, Yoshiaki Nakamura
  • Patent number: 10396620
    Abstract: A rotating electrical machine connection component includes a plurality of linear conductors, and a first molded resin portion that covers portions of the plurality of linear conductors and connects the plurality of linear conductors to each other. Each of the plurality of linear conductors includes a first straight portion extending out of the first molded resin portion in a direction parallel to a rotational axis of the rotor and connected to the terminal block, a second straight portion extending out of the first molded resin portion in a different direction from the first straight portion and a bent portion bent between the first and second straight portions. Of each of the plurality of linear conductors, a part of the first straight portion, the bend portion and a part of the second straight portion are covered by the first molded resin portion.
    Type: Grant
    Filed: October 19, 2016
    Date of Patent: August 27, 2019
    Assignees: Hitachi Metals, Ltd., Honda Motor Co., Ltd.
    Inventors: Kenichi Egami, Takuya Yoshizawa, Mitsuhiro Okamura
  • Patent number: 10388944
    Abstract: A positive electrode active material includes a primary particle represented by Compositional Formula (1): Li1+xNiyCozM1?x?y?zO2 ??(1), where x is a number satisfying a relation represented by an expression ?0.12?x?0.2; y is a number satisfying a relation represented by an expression 0.7?y?0.9; z is a number satisfying a relation represented by an expression 0.05?z?0.3; and M is at least one element selected from the group consisting of Mg, Al, Ti, Mn, Zr, Mo, and Nb; or a secondary particle into which the primary particle aggregates. The primary particle or the secondary particle includes a free lithium compound in a weight proportion of 0.1% or more and 2.0% or less, and the weight of lithium hydroxide in the free lithium compound is 60% or less of the weight of lithium carbonate in the free lithium compound.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: August 20, 2019
    Assignee: HITACHI METALS, LTD.
    Inventors: Tatsuya Toyama, Shin Takahashi, Akira Gunji, Xiaoliang Feng, Hisato Tokoro, Takashi Nakabayashi, Shuichi Takano, Sho Furutsuki