Patents by Inventor Hitoshi Yamamoto

Hitoshi Yamamoto 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: 11074329
    Abstract: An authentication device is provided with: a plurality of attribute-dependent score calculation units each calculating an attribute-dependent score dependent on a prescribed attribute for input data; an attribute-independent score calculation unit for calculating an attribute-independent score independent of the attribute for the input data; an attribute estimation unit for performing attribute estimation for the input data; and a score integration unit for determining a score weight of each of a plurality of attribute-dependent scores and of the attribute-independent score using the result of the attribute estimation and calculating an output score using the attribute-dependent scores, the attribute-independent score, and the determined score weights.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: July 27, 2021
    Assignee: NEC CORPORATION
    Inventors: Koji Okabe, Hitoshi Yamamoto, Takafumi Koshinaka
  • Patent number: 11075401
    Abstract: A composite body includes an electrolyte which contains Li, La, Zr, O, and Ga; and an active material coated with barium titanate (BaTiO3) or lithium niobate (LiNbO3).
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: July 27, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Yamamoto, Tomofumi Yokoyama
  • Patent number: 11075405
    Abstract: An electrolyte according to the invention includes a first electrolyte portion, in which one or more types of elements among the elements constituting a crystalline lithium composite metal oxide represented by the compositional formula (1) are substituted with a first metal element having a crystal radius of 78 pm or more, and an amorphous second electrolyte portion, which contains Li and one or more types of second metal elements contained in the first electrolyte portion other than Li. Li7(La3?xNdx)Zr2O12??(1) In the formula, x satisfies the following formula: 0.0<x?0.6.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: July 27, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Yamamoto, Tomofumi Yokoyama
  • Publication number: 20210226248
    Abstract: An electrolyte precursor solution includes a metallic compound containing elements constituting an electrolyte, a solvent capable of dissolving the metallic compound, and an anionic surfactant having a sulfate group (SO42?) bonded to a hydrophobic group R. By reacting such an electrolyte precursor solution with active material particles containing lithium, lithium sulfate derived from the anionic surfactant is interposed at the interface between the surface of the active material particle and the electrolyte so as to enhance the dissociation of lithium ions at the interface, and thus, an excellent ion conductivity can be realized.
    Type: Application
    Filed: April 2, 2021
    Publication date: July 22, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hitoshi YAMAMOTO, Tomofumi YOKOYAMA
  • Publication number: 20210217971
    Abstract: A compound having an ancillary ligand L1 having the formula: Formula I is disclosed. The ligand L1 is coordinated to a metal M having an atomic number greater than 40, and two adjacent substituents are optionally joined to form into a ring. Such compound is suitable for use as emitters in organic light emitting devices.
    Type: Application
    Filed: March 23, 2021
    Publication date: July 15, 2021
    Applicant: Universal Display Corporation
    Inventors: PIERRE-LUC T. BOUDREAULT, Alexey Dyatkin, David Zenan Li, Scott Joseph, Chuanjun Xia, Hitoshi Yamamoto, Michael S. Weaver, Bert Alleyne, James Fiordeliso
  • Patent number: 11024816
    Abstract: Compounds having a structure of Formula I, Formula II, or Formula III, devices containing the same, and formulations containing the same are described. In Formulas (I), (II), and (III), X2 to X8 are C or N; at least one of X2 to X8 is N; R1, R2, R3, and R4 are independently alkyl or cycloalkyl; at least one of R1 to R4 has at least two C atoms; R5 is hydrogen, deuterium, alkyl, cycloalkyl, or a combination thereof; R6, R7, and R8 are independently hydrogen, deuterium, alkyl, cycloalkyl, and combinations thereof; and n is 1 or 2.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: June 1, 2021
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Pierre-Luc T. Boudreault, Alexey Borisovich Dyatkin, Chuanjun Xia, Hitoshi Yamamoto
  • Publication number: 20210154630
    Abstract: An ultrasonic homogenizer includes an ultrasonic transducer; an ultrasonic horn that irradiates an ultrasonic wave generated by the ultrasonic transducer; a holder that receives an irradiating surface of the ultrasonic horn; an intake port that is provided on a bottom face of the holder and intakes a mixture liquid into the holder; and an ejection port that is provided on the holder above the intake port and discharges the mixture liquid supplied inside the holder; an opening area of the intake port being smaller than an irradiating area of the ultrasonic horn and the irradiating surface of the ultrasonic horn being disposed above the intake port whereby facing the intake port.
    Type: Application
    Filed: November 20, 2020
    Publication date: May 27, 2021
    Applicant: Kaijo Corporation
    Inventors: Mineyuki SEKIMOTO, Hitoshi YAMAMOTO, Hiroshi HASEGAWA, Takashi KAWAMURA
  • Publication number: 20210140081
    Abstract: A non-woven fabric including fibers including an aliphatic polyester that has at least two maximum values in a molecular weight distribution thereof, wherein the fibers have a fiber diameter falling within the range of 100 to 3000 nm. The non-woven fabric of the present invention has excellent biodegradability.
    Type: Application
    Filed: July 9, 2019
    Publication date: May 13, 2021
    Applicants: NATIONAL INSTITUTE FOR MATERIALS SCIENCE, NIPPON ZOKI PHARMACEUTICAL CO., LTD.
    Inventors: Koichiro UTO, Mitsuhiro EBARA, Mitsuru NAIKI, Takafumi KONISHI, Hitoshi YAMAMOTO
  • Publication number: 20210130240
    Abstract: A solid composition according to the present disclosure is a solid composition to be used for forming a functional ceramic having a crystal phase, and contains an oxide constituted by a crystal phase different from the crystal phase of the functional ceramic at normal temperature and normal pressure, and an oxoacid compound. The oxoacid compound preferably contains at least one of a nitrate ion and a sulfate ion as an oxoanion. Further, the oxide preferably has a crystal grain size of 10 nm or more and 200 nm or less.
    Type: Application
    Filed: November 4, 2020
    Publication date: May 6, 2021
    Inventors: Tomofumi YOKOYAMA, Naoyuki TOYODA, Hitoshi YAMAMOTO
  • Publication number: 20210134300
    Abstract: This speech processing device is provided with: a contribution degree estimation means which calculates a contribution degree representing a quality of a segment of the speech signal; and a speaker feature calculation means which calculates a feature from the speech signal, for recognizing attribute information of the speech signal, using the contribution degree as a weight of the segment of the speech signal.
    Type: Application
    Filed: March 7, 2017
    Publication date: May 6, 2021
    Applicant: NEC Corporation
    Inventors: Hitoshi YAMAMOTO, Takafumi KOSHINAKA
  • Publication number: 20210135204
    Abstract: A solid electrolyte coated positive electrode active material powder according to the present disclosure includes: a plurality of particles each having a mother particle formed of a positive electrode active material for a lithium ion secondary battery containing a complex oxide of Li and a transition metal T, and a coating layer formed of a garnet-type solid electrolyte represented by the following Formula (1) and coating at least a part of a surface of the mother particle: Li7-xLa3(Zr2-xMx)O12??(1) (in Formula (1), M represents one or more metal elements selected from Ta, Sb, and Nb, and 0.1?x<0.7).
    Type: Application
    Filed: November 4, 2020
    Publication date: May 6, 2021
    Inventors: Tsutomu TERAOKA, Tomofumi YOKOYAMA, Hitoshi YAMAMOTO, Masahiro FURUSAWA, Naoyuki TOYODA
  • Publication number: 20210135191
    Abstract: A positive electrode active material composite body according to the present disclosure includes a positive electrode active material containing a transition metal element and having a particulate shape, and an ion conductor provided in contact with a surface of the positive electrode active material, wherein the ion conductor is constituted by a material containing Li, Zr, and M which is at least one type of element selected from the group consisting of Nb, Sb, and Ta, the transition metal element is partially diffused in the ion conductor, and an average decrease ratio of a content ratio of the transition metal element until a point where the content ratio of the transition metal element in the ion conductor to be determined by a characteristic X-ray has reached 12% of the content ratio of the transition metal element at an interface between the positive electrode active material and the ion conductor based on a substance amount is 0.5% or more and 6.1% or less per 1 nm thickness from the interface.
    Type: Application
    Filed: November 4, 2020
    Publication date: May 6, 2021
    Applicant: Seiko Epson Corporation
    Inventors: Tomofumi YOKOYAMA, Hitoshi YAMAMOTO, Tsutomu TERAOKA, Naoyuki TOYODA
  • Publication number: 20210135203
    Abstract: A positive electrode active material composite particle according to the present disclosure includes a base particle constituted by a positive electrode active material containing a lithium composite oxide having a layered crystal structure, and a coating layer that is constituted by a material containing a multiple oxide different from the positive electrode active material, a lithium compound, and an oxoacid compound, and that at least partially coats a surface of the base particle. The oxoacid compound preferably contains at least one of a nitrate ion and a sulfate ion as an oxoanion.
    Type: Application
    Filed: November 4, 2020
    Publication date: May 6, 2021
    Inventors: Tomofumi YOKOYAMA, Tsutomu TERAOKA, Hitoshi YAMAMOTO, Masahiro FURUSAWA, Naoyuki TOYODA
  • Publication number: 20210135282
    Abstract: A solid electrolyte composite particle according to the present disclosure includes: a mother particle formed of a first solid electrolyte containing at least lithium; and a coating layer formed of a material containing an oxide different from the first solid electrolyte, a lithium compound, and an oxo acid compound, and coating at least a part of a surface of the mother particle. The oxo acid compound may contain at least one of a nitrate ion and a sulfate ion as an oxo anion.
    Type: Application
    Filed: November 4, 2020
    Publication date: May 6, 2021
    Inventors: Masahiro FURUSAWA, Tomofumi YOKOYAMA, Tsutomu TERAOKA, Hitoshi YAMAMOTO, Naoyuki TOYODA
  • Publication number: 20210133302
    Abstract: An authentication device is provided with: a plurality of attribute-dependent score calculation units each calculating an attribute-dependent score dependent on a prescribed attribute for input data; an attribute-independent score calculation unit for calculating an attribute-independent score independent of the attribute for the input data; an attribute estimation unit for performing attribute estimation for the input data; and a score integration unit for determining a score weight of each of a plurality of attribute-dependent scores and of the attribute-independent score using the result of the attribute estimation and calculating an output score using the attribute-dependent scores, the attribute-independent score, and the determined score weights.
    Type: Application
    Filed: March 23, 2017
    Publication date: May 6, 2021
    Applicant: NEC Corporation
    Inventors: Koji OKABE, Hitoshi YAMAMOTO, Takafumi KOSHINAKA
  • Publication number: 20210135281
    Abstract: A solid composition according to the present disclosure is a solid composition for use in forming a solid electrolyte having a crystal phase, containing: at normal temperature and normal pressure, an oxide having a crystal phase different from the crystal phase of the solid electrolyte; a lithium compound; and an oxo acid compound. The oxo acid compound may contain at least one of a nitrate ion and a sulfate ion as an oxo anion.
    Type: Application
    Filed: November 4, 2020
    Publication date: May 6, 2021
    Inventors: Tomofumi YOKOYAMA, Naoyuki TOYODA, Hitoshi YAMAMOTO
  • Patent number: 10998576
    Abstract: An electrolyte precursor solution includes a metallic compound containing elements constituting an electrolyte, a solvent capable of dissolving the metallic compound, and an anionic surfactant having a sulfate group (SO42?) bonded to a hydrophobic group R. By reacting such an electrolyte precursor solution with active material particles containing lithium, lithium sulfate derived from the anionic surfactant is interposed at the interface between the surface of the active material particle and the electrolyte so as to enhance the dissociation of lithium ions at the interface, and thus, an excellent ion conductivity can be realized.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: May 4, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Yamamoto, Tomofumi Yokoyama
  • Patent number: 10991896
    Abstract: A compound having an ancillary ligand L1 having the formula: Formula I is disclosed. The ligand L1 is coordinated to a metal M having an atomic number greater than 40, and two adjacent substituents are optionally joined to form into a ring. Such compound is suitable for use as emitters in organic light emitting devices.
    Type: Grant
    Filed: September 12, 2018
    Date of Patent: April 27, 2021
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Pierre-Luc T. Boudreault, Alexey Dyatkin, David Zenan Li, Scott Joseph, Chuanjun Xia, Hitoshi Yamamoto, Michael S. Weaver, Bert Alleyne, James Fiordeliso
  • Publication number: 20210096906
    Abstract: An interrupt handler unit (130) generates a timer interrupt at an interrupt time, and executes an interrupt preparation process. A wait time period measurement unit (142) a measures a time period from completion of the interrupt preparation process to generation of a start request (201) as a wait time period. A time calculation unit (441) calculates a subtraction time period based on the wait time period measured by the wait time period measurement unit (142), and calculates a preparation time period that is the sum of a time period obtained by subtracting the subtraction time period from the wait time period and a processing time period of the interrupt preparation process. The time calculation unit (441) stores a time obtained by shifting back the preparation time period from the time of a next start request (201), as a next interrupt time, in a time storage unit (442).
    Type: Application
    Filed: December 10, 2020
    Publication date: April 1, 2021
    Applicant: Mitsubishi Electric Corporation
    Inventors: Jun YABUKI, Hitoshi YAMAMOTO, Ryo OKABE, Shinichi OCHIAI, Hiroki KONAKA
  • Patent number: 10947160
    Abstract: A solid electrolyte capable of securing grain boundary resistance even when sintering is performed at a relatively low temperature and a lithium ion battery using the solid electrolyte are provided. The solid electrolyte includes a first electrolyte which contains a lithium composite metal compound containing one kind of first metal element selected from group 13 elements in period 3 or higher, and a second electrolyte which contains Li and at least two kinds of second metal elements selected from group 5 elements in period 5 or higher or group 15 elements in period 5 or higher.
    Type: Grant
    Filed: August 13, 2020
    Date of Patent: March 16, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Yamamoto, Tomofumi Yokoyama