Patents by Inventor Makoto Kubota

Makoto Kubota 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: 20190334458
    Abstract: The present invention provides a vibrator made of a non-lead-based piezoelectric material and capable of being driven at a sufficient speed with low power consumption, and provides a vibration wave drive device and an electronical device each using the vibrator. To that end, the vibrator according to the present invention includes a piezoelectric element including a piezoelectric material and electrodes, and an elastic body, wherein a Pb component contained in the piezoelectric material is less than 1000 ppm, and a resonance frequency fA in a vibration mode A and a resonance frequency fB in a vibration mode B satisfy a relation of an absolute value of (fB?fA)>2 (kHz), the vibration mode A and the vibration mode B generating vibration waves in the elastic body with wave fronts of the vibration waves intersecting each other.
    Type: Application
    Filed: December 21, 2017
    Publication date: October 31, 2019
    Inventors: Tatsuo Furuta, Takayuki Watanabe, Miki Ueda, Shinya Koyama, Makoto Kubota, Takanori Matsuda, Akira Uebayashi, Jumpei Hayashi, Hitoshi Nishitani
  • Patent number: 10461241
    Abstract: This invention is a method for manufacturing a rectangular parallelepiped-shaped single crystal containing sodium niobate of a perovskite structure as the main component, and the method includes a process of heating a mixture 1 of bismuth sodium niobate which is formed from particles containing a plurality of crystals represented by General Formula (1): Bi2.5Nam?1.5NbmO3m+3 (m is an integer of 2 or more) and in which an average value ma of the m values is larger than 6 and sodium containing alkali metal halide at 1200° C. or more and 1250° C. or less to obtain a rectangular parallelepiped-shaped single crystal containing sodium niobate as the main component.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: October 29, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Takayuki Watanabe, Shunsuke Murakami, Makoto Kubota
  • Patent number: 10451833
    Abstract: A vibrator and an ultrasonic motor can exhibit a sufficient drive speed even when using lead-free piezoelectric ceramics. The ultrasonic motor includes an annular vibrator and an annular moving member arranged so as to be brought into pressure-contact with the vibrator. The vibrator includes an annular vibrating plate and an annular piezoelectric element. The piezoelectric element includes an annular piezoelectric ceramic piece, a common electrode arranged on one surface of the piezoelectric ceramic piece, and a plurality of electrodes arranged on the other surface of the piezoelectric ceramic piece. The piezoelectric ceramic piece contains lead in a content of less than 1,000 ppm. The plurality of electrodes include two drive phase electrodes, at least one non-drive phase electrode, and at least one detection phase electrode.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: October 22, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Jumpei Hayashi, Akira Uebayashi, Tatsuo Furuta, Hidenori Tanaka, Shinya Koyama, Makoto Kubota
  • Patent number: 10437123
    Abstract: A novel liquid crystal display device is provided. Two pixels each include a transistor that includes a back gate. The transistor is connected to the common gate line and data line. A threshold voltage is controlled by a control signal supplied to a back gate so that while data is written to one pixel, the transistor of the other pixel is not turned on. The aperture ratio is improved by reducing the number of wirings connected to the pixel and increasing the frequency of the control signal supplied to the back gate.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: October 8, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Daisuke Kubota, Makoto Kaneyasu
  • Publication number: 20190300441
    Abstract: Ceramic powder to be used for additive manufacturing of a ceramic object by irradiating the powder with laser light includes a first group of particles of a first inorganic compound showing an average particle diameter of not less than 10 ?m and not more than 100 ?m and a second group of particles of a second inorganic compound having an absorption band at the wavelength of the laser light and showing an average particle diameter smaller than the average particle diameter of the first group of particles. Particles belonging to the second group of particles are arranged on the surfaces of particles belonging to the first group of particles. A high-precision ceramic object can be obtained in a short time by using the ceramic powder.
    Type: Application
    Filed: March 27, 2019
    Publication date: October 3, 2019
    Inventors: Makoto Kubota, Nobuhiro Yasui, Hisato Yabuta, Kanako Oshima
  • Patent number: 10424722
    Abstract: Provided is a piezoelectric element containing no lead therein and having a satisfactory piezoelectric constant and a small dielectric loss tangent at room temperature (25° C.) In order to attain this, the piezoelectric element includes a substrate, a first electrode, a piezoelectric film, and a second electrode. The piezoelectric film contains barium zirconate titanate, manganese, and trivalent bismuth. The piezoelectric film satisfies 0.02?x?0.13, where x is a mole ratio of zirconium to the sum of zirconium and titanium. A manganese content is 0.002 moles or more and 0.015 moles or less for 1 mole of barium zirconate titanate, and a bismuth content is 0.00042 moles or more and 0.00850 moles or less for 1 mole of barium zirconate titanate.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: September 24, 2019
    Inventors: Takanori Matsuda, Makoto Kubota, Kaoru Miura
  • Publication number: 20190288255
    Abstract: Provided is electric power equipment that allows a battery to be installed and removed with ease. The electric power equipment (1) includes a main body (2) defining a battery receiving recess (40) having an open upper end, and a battery (20) configured to be received in the battery receiving recess, wherein an upper part of a front end part of the battery is provided with a projection (108) projecting in a forward direction, and a rear end part of the battery is provided with a grip, and wherein an upper edge of the front end part of the battery receiving recess is provided with a supporting surface (36) configured to support a lower surface of the projection at least when the battery is being removed from the battery receiving recess.
    Type: Application
    Filed: November 17, 2017
    Publication date: September 19, 2019
    Inventors: Taichi KUBOTA, Tatsuya YAMAZAKI, Norikazu SHIMIZU, Kunihiko ISHIZUKA, Keisuke MURAOKA, Makoto UCHIMI
  • Patent number: 10400124
    Abstract: An ink composition set has at least a solvent-based orange ink composition containing an orange pigment as a pigment and a solvent and a solvent-based red ink composition containing a red pigment as a pigment and a solvent.
    Type: Grant
    Filed: January 19, 2017
    Date of Patent: September 3, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Kenichiro Kubota, Makoto Nagase, Jun Ito, Naoki Koike, Keiji Iida
  • Publication number: 20190245135
    Abstract: Provided is a piezoelectric ceramics having a gradual change in piezoelectric constant depending on an ambient temperature. Specifically, provided is a single-piece piezoelectric ceramics including as a main component a perovskite-type metal oxide represented by a compositional formula of ABO3, wherein an A site element in the compositional formula contains Ba and M1, the M1 being formed of at least one kind selected from the group consisting of Ca and Bi, wherein a B site element in the compositional formula contains Ti and M2, the M2 being formed of at least one kind selected from the group consisting of Zr, Sn, and Hf, wherein concentrations of the M1 and the M2 change in at least one direction of the piezoelectric ceramics, and wherein increase and decrease directions of concentration changes of the M1 and the M2 are directions opposite to each other.
    Type: Application
    Filed: January 31, 2019
    Publication date: August 8, 2019
    Inventors: Makoto Kubota, Yasushi Shimizu, Takanori Matsuda, Tatsuo Furuta, Kaoru Miura, Miki Ueda, Kanako Oshima
  • Publication number: 20190246013
    Abstract: A vibration device comprises a vibrating member having at least n (n?2) piezoelectric elements arranged on a vibrating plate, each of the piezoelectric elements being formed by using a lead-free piezoelectric material and electrodes, wherein if the temperature that maximizes the piezoelectric constant of the piezoelectric material of each of the n piezoelectric elements is expressed as Tm (m being a natural number between 1 and n), at least two of T1 through Tn differ from each other.
    Type: Application
    Filed: January 29, 2019
    Publication date: August 8, 2019
    Inventors: Yasushi Shimizu, Takanori Matsuda, Shinya Koyama, Makoto Kubota, Akira Uebayashi, Kanako Oshima
  • Publication number: 20190178920
    Abstract: A semiconductor device is provided which can detect a fluctuation of a power supply voltage. The semiconductor device includes a counter circuit that outputs a signal when a period during which a power supply voltage of a system to be monitored is lower than or equal to a first voltage value exceeds a predetermined time, a first flag circuit that sets a first flag based on the signal, a second flag circuit that sets a second flag when the power supply voltage becomes a second voltage value or lower, and a circuit that outputs a reset signal that resets the system when both the first and the second flags are set. The first voltage value and the second voltage value are higher than a minimum voltage that guarantees normal operation of the system. The first voltage value is higher than the second voltage value.
    Type: Application
    Filed: October 29, 2018
    Publication date: June 13, 2019
    Inventors: Toshiharu SAITO, Makoto INOUE, Yasunori KUBOTA
  • Publication number: 20190162683
    Abstract: To provide a thermal diffusion factor measurement device, a thermal diffusion factor measurement method and a program capable of measuring thermal diffusion with high accuracy, even when an object to be measured has anisotropy in which thermal diffusion factors differ greatly between the in-plane direction and the thickness direction and a thick thickness. In a thermal diffusion factor measurement method, a heating location H on a tabular sample is made to generate periodically varying thermal waves and the thermal waves at a detection location S on the sample are detected by a non-contact temperature sensor. In addition, the phase delay of the thermal waves at the detection location S is detected in consideration of a detection sensitivity distribution DS of the non-contact temperature sensor and the thermal diffusion factor in the in-plane direction of the sample is measured using the phase delay.
    Type: Application
    Filed: April 5, 2017
    Publication date: May 30, 2019
    Inventors: Takaaki AWANO, Kimihito HATORI, Makoto SEKINE, Takahiko KUBOTA, Hosei NAGANO, Ryohei FUJITA
  • Patent number: 10290669
    Abstract: The present invention is to provide a light screening composition that allow forming of a light screening film having excellent adhesiveness to a substrate and excellent residue removability at the time of development. The light screening composition according to the invention contains (A) any one of light screening particles and a light screening dye; (B) a dispersing resin; (C) a binder polymer having an acid value of 50 mg KOH/g or less and a weight-average molecular weight of 8,000 to 50,000; and (D) a polymerizable compound.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: May 14, 2019
    Assignee: FUJIFILM Corporation
    Inventor: Makoto Kubota
  • Patent number: 10287422
    Abstract: There is provided a dispersion composition capable of forming a film being excellent in surface conditions, the dispersion composition containing metal oxide particles (A) having a primary particle diameter of 1 nm to 100 nm, a polymer compound (B) having an acid value of less than 120 mgKOH/g, which is represented by the following Formula (1), and a solvent (C).
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: May 14, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Kyouhei Arayama, Hiroaki Idei, Makoto Kubota, Hideki Takakuwa
  • Publication number: 20190123509
    Abstract: A light-emitting device includes: a package body; a lid body connected to the package body, wherein the package body and the lid body together form a sealed space; and a plurality of light-emitting elements disposed in the sealed space. The lid body includes: a non-transmissive member including an outer frame, and one or more inner frames connected to the outer frame, wherein the outer frame and the one or more inner frames define a plurality of openings, a transmissive member integrally covering the plurality of openings and configured to allow light emitted from the plurality of light-emitting elements to be transmitted through the plurality of openings, and an adhesive member fixing the transmissive member to the non-transmissive member. The adhesive member is located on the outer frame and is not located on the one or more inner frames.
    Type: Application
    Filed: October 18, 2018
    Publication date: April 25, 2019
    Inventors: Takuya HASHIMOTO, Kazuma KOZURU, Eiichiro OKAHISA, Katsuya NAKAZAWA, Makoto KUBOTA
  • Publication number: 20190115853
    Abstract: Provided is a method of manufacturing an oscillator, including: arranging an electrode on a piezoelectric ceramics free from being subjected to polarization treatment, to thereby provide a piezoelectric element; bonding the piezoelectric element and a diaphragm to each other at a temperature T1; bonding the piezoelectric element and a power supply member to each other at a temperature T2; and subjecting the piezoelectric ceramics to polarization treatment at a temperature T3, in which the temperature T1, the temperature T2, and the temperature T3 satisfy a relationship T1>T3 and a relationship T2>T3.
    Type: Application
    Filed: March 21, 2017
    Publication date: April 18, 2019
    Inventors: Jumpei Hayashi, Kenichi Takeda, Shinya Koyama, Takayuki Watanabe, Yasushi Shimizu, Tatsuo Furuta, Miki Ueda, Akira Uebayashi, Hidenori Tanaka, Makoto Kubota
  • Publication number: 20190105689
    Abstract: Provided is a substrate cleaning method capable of maintaining a substrate and a cleaning tank in a clean condition after cleaning. In this method, a substrate holder holding the substrate is immersed in a rinsing liquid in the cleaning tank. While a flow of a cleaning liquid is formed on the substrate, the substrate holder and an inner surface of the cleaning tank, the rinsing liquid is discharged from the cleaning tank. While the flow of the cleaning liquid is formed on the substrate, the substrate holder and the inner surface of the cleaning tank, the rinsing liquid is supplied into the cleaning tank, and the substrate holder is immersed in the rinsing liquid. The substrate holder is pulled up from the rinsing liquid.
    Type: Application
    Filed: October 5, 2018
    Publication date: April 11, 2019
    Inventors: Makoto KUBOTA, Taiki ISHITSUKA
  • Publication number: 20190044054
    Abstract: A piezoelectric material which is low in load on the environment, and also satisfies both the requirements of a high piezoelectric constant and a high mechanical quality factor. The piezoelectric material comprises a plurality of crystal grains containing Ba, Ca, Ti, Zr, Mn, and O. An average equivalent circle diameter of the crystal grains is not smaller than 1.0 ?m and not larger than 10 ?m. The crystal grains include crystal grains A each having a first domain with a width of not smaller than 300 nm and not larger than 800 nm, and crystal grains B each having a second domain with a width of not smaller than 20 nm and not larger than 50 nm.
    Type: Application
    Filed: August 1, 2018
    Publication date: February 7, 2019
    Inventors: Tomohiro Watanabe, Makoto Kubota, Akira Uebayashi, Kanako Oshima, Tatsuo Furuta
  • Publication number: 20190019940
    Abstract: A piezoelectric element includes a piezoelectric material layer and an electrode layer, wherein the piezoelectric material layer and the electrode layer are stacked on top of each other, the piezoelectric material layer includes a barium titanate-based material, and two coercive fields Ec1 and Ec2 of the piezoelectric element have the same sign and satisfy (|Ec2|?|Ec1|)?8 kV/cm.
    Type: Application
    Filed: July 6, 2018
    Publication date: January 17, 2019
    Inventors: Jumpei Hayashi, Makoto Kubota, Shinya Koyama, Tatsuo Furuta, Kanako Oshima
  • Patent number: 10171347
    Abstract: A transfer path between a sensor and a data processing server is partitioned into at least a first transfer path between the sensor and a first relay device, a second transfer path from the first relay device to a second relay device that transfers the data transmitted from the first sensor, and a third transfer path between the second relay device and the data processing server. A data transfer between each of the sensors and the data processing server is implemented by respectively controlling a pair of the first transfer path and the second transfer path, and a pair of the second transfer path and the third transfer path.
    Type: Grant
    Filed: March 20, 2014
    Date of Patent: January 1, 2019
    Assignee: Fujitsu Limited
    Inventor: Makoto Kubota