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).

  • Publication number: 20190260072
    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: Application
    Filed: February 15, 2019
    Publication date: August 22, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hitoshi YAMAMOTO, Tomofumi YOKOYAMA
  • Publication number: 20190260068
    Abstract: An electrolyte according to the invention includes a crystalline first electrolyte portion which contains a lithium composite metal oxide represented by the compositional formula (1). (Li7?3xGax)(La3-yNdy)Zr2O12??(1) In the formula, x and y satisfy the following formulae: 0.1?x?1.0 and 0.01?y?0.2.
    Type: Application
    Filed: February 15, 2019
    Publication date: August 22, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hitoshi YAMAMOTO, Tomofumi YOKOYAMA
  • Publication number: 20190244064
    Abstract: A pattern recognition apparatus according to the present invention includes: a memory; and at least one processor coupled to the memory, the processor performing operations, the operations comprising: transforming noisy feature vectors into denoised feature vectors; classifying the denoised feature vectors into related classes and estimated classes; calculating a cost by using the denoised feature vectors, clean feature vectors, the estimated classes, and feature vector labels; and updating parameters for transforming the noisy feature vectors according to the cost.
    Type: Application
    Filed: October 25, 2016
    Publication date: August 8, 2019
    Applicant: NEC Corporation
    Inventors: Shivangi MAHTO, Hitoshi YAMAMOTO, Takafumi KOSHINAKA
  • Patent number: 10340549
    Abstract: A electrolyte is an electrolyte represented by the following formula (1): (Li7?3x+yGax)(La3?yCay)Zr2O12??(1) wherein 0.1?x?1, and 0.01?y?0.5.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: July 2, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Yamamoto, Tomofumi Yokoyama
  • Publication number: 20190198918
    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: December 21, 2018
    Publication date: June 27, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hitoshi YAMAMOTO, Tomofumi YOKOYAMA
  • Publication number: 20190131356
    Abstract: Displays including hybrid pixels including an OLED subpixel and QD-LED subpixel are described. In an embodiment, OLED and QD-LED stacks are integrated into the same pixel with multiple common layers shared by the OLED and QD-LED stacks.
    Type: Application
    Filed: December 13, 2018
    Publication date: May 2, 2019
    Inventors: Jonathan S. Steckel, Mathew K. Mathai, Paul S. Drzaic, Hitoshi Yamamoto
  • Publication number: 20190097266
    Abstract: A solid electrolyte which reduces grain boundary resistance and exhibits a high total ion conductivity is provided. The solid electrolyte includes a first area which has a cubic garnet type crystalline and a second area which is amorphous, around the first area, in which each of the first area and the second area contains a composite oxide represented by formula (1) or (2) as a forming material, and an abundance ratio of metal atoms each having an ionic radius of 78 pm or more gradually increases from the first area to the second area. Li7+xLa3?xZr2AxO12??(1) [In formula (1), A is at least one selected from the group consisting of Mg, Ca, Sr, and Ba. In addition, x is 0.1 or more and 0.6 or less.] Li7La3?xZr2BxO12??(2) [In formula (2), B is at least one selected from the group consisting of Sc and Y. In addition, x is 0.1 or more and 0.6 or less.
    Type: Application
    Filed: March 3, 2017
    Publication date: March 28, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hitoshi YAMAMOTO, Tomofumi YOKOYAMA
  • Publication number: 20190097267
    Abstract: A solid electrolyte capable of securing grain boundary resistance even when firing is performed at a relatively low temperature and a battery using the solid electrolyte are provided. The solid electrolyte includes a first electrolyte which contains a lithium composite metal compound, and a second electrolyte which contains Li and at least two kinds of metal elements selected from group 5 elements in period 5 or higher or group 15 elements in period 5 or higher.
    Type: Application
    Filed: March 10, 2017
    Publication date: March 28, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tomofumi YOKOYAMA, Hitoshi YAMAMOTO
  • Publication number: 20190084887
    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: Application
    Filed: March 13, 2017
    Publication date: March 21, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hitoshi YAMAMOTO, Tomofumi YOKOYAMA
  • Publication number: 20190071461
    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: September 12, 2018
    Publication date: March 7, 2019
    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: 10199581
    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: July 1, 2013
    Date of Patent: February 5, 2019
    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
  • Patent number: 10192932
    Abstract: Displays including hybrid pixels including an OLED subpixel and QD-LED subpixel are described. In an embodiment, OLED and QD-LED stacks are integrated into the same pixel with multiple common layers shared by the OLED and QD-LED stacks.
    Type: Grant
    Filed: August 23, 2016
    Date of Patent: January 29, 2019
    Assignee: Apple Inc.
    Inventors: Jonathan S. Steckel, Mathew K. Mathai, Paul S. Drzaic, Hitoshi Yamamoto
  • Publication number: 20180375150
    Abstract: An electrolyte includes a first electrolyte, in which an element constituting a crystalline lithium composite metal oxide represented by the following compositional formula (1) is substituted with a first metal element having a crystal radius of 78 pm or more, and an amorphous second electrolyte, which contains Li and a second metal element contained in the first electrolyte other than Li. (Li7?3x+yGax)(La3?yCay)Zr2O12??(1) (In the formula (1), x and y satisfy the following formulae: 0.1?x?0.6 and 0.0<y?0.3).
    Type: Application
    Filed: June 1, 2018
    Publication date: December 27, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hitoshi YAMAMOTO, Tomofumi YOKOYAMA
  • Publication number: 20180342680
    Abstract: A composition formed of a mixture of two compounds having similar thermal evaporation properties that are pre-mixed into an evaporation source that can be used to co-evaporate the two compounds into an emission layer in OLEDs via vacuum thermal evaporation process is disclosed.
    Type: Application
    Filed: July 27, 2018
    Publication date: November 29, 2018
    Applicant: Universal Display Corporation
    Inventors: Vadim ADAMOVICH, Hitoshi YAMAMOTO, Ting-Chih WANG, Michael S. WEAVER, Chuanjun XIA, Bert ALLEYNE, Pierre-Luc T. BOUDREAULT, Alexey Borisovich DYATKIN, Scott JOSEPH
  • Patent number: 10109815
    Abstract: The invention provides a light emitting device, comprising: a first electrode; a second electrode; a light emitting layer disposed between the first electrode and the second electrode, wherein the light emitting layer comprises an emitting material having a first triplet energy level (T1); and an exciton quenching layer disposed between the light emitting layer and the second electrode, wherein the exciton quenching layer comprises a non-emitting quenching material having a second triplet energy level (T1); wherein the exciton quenching layer is disposed adjacent to the light emitting layer; wherein the emitting material emits by phosphorescence or delayed fluorescence; and wherein the first triplet energy level (T1) is higher than the second triplet energy level (T1). Methods of making the same are also provided.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: October 23, 2018
    Assignee: Universal Display Corporation
    Inventors: Vadim Adamovich, Hitoshi Yamamoto, Michael S. Weaver, Julia J. Brown
  • Publication number: 20180277774
    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: Application
    Filed: May 11, 2018
    Publication date: September 27, 2018
    Applicant: Universal Display Corporation
    Inventors: PIERRE-LUC T. BOUDREAULT, Alexey Borisovich DYATKIN, Chuanjun XIA, Hitoshi YAMAMOTO
  • Publication number: 20180269532
    Abstract: A manufacturing method of an electrode assembly capable of easily manufacturing a configuration in which an electrolyte and an active material are bonded to each other. A step of supplying, solidifying, and crystallizing a solid electrolyte including Li2+XC1?XBXO3 (X represents a real number equal to or greater than 0 and smaller than 1), so as to be in contact with an active material aggregate including a communication hole between active material particles, is included. In a case where the solid electrolyte is melted, the solid electrolyte is heated in a range of 650 degrees to 900 degrees.
    Type: Application
    Filed: September 26, 2016
    Publication date: September 20, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tsutomu TERAOKA, Tomofumi YOKOYAMA, Hitoshi YAMAMOTO, Tomoyuki OKUYAMA
  • Patent number: 10074806
    Abstract: A composition formed of a mixture of two compounds having similar thermal evaporation properties that are pre-mixed into an evaporation source that can be used to co-evaporate the two compounds into an emission layer in OLEDs via vacuum thermal evaporation process is disclosed.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: September 11, 2018
    Assignee: Universal Display Corporation
    Inventors: Vadim Adamovich, Hitoshi Yamamoto, Ting-Chih Wang, Michael S. Weaver, Chuanjun Xia, Bert Alleyne, Pierre-Luc T. Boudreault, Alexey Borisovich Dyatkin, Scott Joseph
  • Patent number: 10061226
    Abstract: An image forming apparatus includes an image bearer, a toner image forming device, a plurality of image density detectors, and a controller. The plurality of image density detectors are disposed at predetermined intervals opposite the image bearer in a width direction of the image bearer. The controller causes the toner image forming device to form toner image patterns having an identical density at the plurality of positions on the image bearer and the plurality of image density detectors detects a density of the toner image patterns. Based on the detected density of the toner image patterns, the controller identifies multiple cyclic fluctuations of the density of the toner image patterns and adjusts an image forming condition based on the multiple cyclic fluctuations of the density of the toner image patterns to decrease an amplitude caused by the multiple cyclic fluctuations of the density of the toner image patterns.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: August 28, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Kazuaki Kamihara, Yuuichiroh Uematsu, Tetsuya Muto, Tomohide Takenaka, Keita Sone, Keita Gotoh, Masahiko Shakuto, Takamasa Ozeki, Mutsuki Morinaga, Hitoshi Yamamoto, Keiko Kajimura
  • Publication number: 20180183098
    Abstract: A polymer electrolyte according to the invention is represented by the following formula (1). In the formula (1), R1 and R2 are each independently hydrogen or CH3, R3 is any of C2H4, CH(CH3)CH2, and (CH2)3, m and n are each a copolymerization ratio of a structural unit in parentheses, and when m and n are set as follows: m+n=10, m and n satisfy the following formulae: 1?m?5 and 5?n?9, and p is 2 or more and 8 or less.
    Type: Application
    Filed: December 14, 2017
    Publication date: June 28, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Hitoshi YAMAMOTO, Tomofumi YOKOYAMA