Patents by Inventor Hitoshi Matsumoto

Hitoshi Matsumoto 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: 10479079
    Abstract: A liquid ejecting head (recording head) includes a structure (flow path member) having a plurality of stacked plates (a nozzle plate, a flow path plate, and a diaphragm) in which end surfaces at both sides in one direction are aligned. At least two plates of the plates (the nozzle plate, the flow path plate, and the diaphragm) have different coefficients of linear expansion in the one direction, and holding members are fixed to the end surfaces of the structure (flow path member) at both sides in the one direction, the holding members having stiffness higher than stiffness of a plate having the highest coefficient of linear expansion in the one direction among the plates (the nozzle plate, the flow path plate, and the diaphragm).
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: November 19, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Satoshi Kimura, Hitoshi Matsumoto, Wataru Takahashi, Satoshi Suzuki
  • Publication number: 20190330722
    Abstract: The steel material for a soft magnetic part according to the present invention has a chemical composition consisting of, in mass %, C: 0.02 to 0.13%, Si: 0.005 to 0.50%, Mn: 0.10 to 0.70%, P: 0.035% or less, S: 0.050% or less, Al: 0.005 to 1.300%, V: 0.02 to 0.50%, and N: 0.003 to 0.030%, with the balance being Fe and impurities. The average grain diameter of ferrite grains in the steel material for a soft magnetic part ranges from 5 to 200 pun. Further, in the ferrite grains, the number Sv (number/mm2) of precipitates having a circle-equivalent diameter of 30 nm or more satisfies Formula (1): Sv?10V×7.0×106??(1) where the V content (mass %) in the steel material for a soft magnetic part is substituted into V in Formula (1).
    Type: Application
    Filed: December 7, 2017
    Publication date: October 31, 2019
    Inventors: Makoto Egashira, Hidekazu Sueno, Hitoshi Matsumoto
  • Patent number: 10414010
    Abstract: In a machine tool and a control apparatus thereof, a repetitive movement unit is configured so that the cutting tool performs one repetitive movement with respect to multiple relative rotations between the workpiece and the cutting tool and so that a rotation angle of the relative rotation between the workpiece and the cutting tool during relative movement at a second speed is smaller than a rotation angle of the relative rotation during relative movement at a first speed in one repetitive movement. This configuration limits degradation of machining efficiency when the cutting tool machines the workpiece by performing one repetitive movement with respect to multiple relative rotations between the workpiece and the cutting tool.
    Type: Grant
    Filed: September 3, 2018
    Date of Patent: September 17, 2019
    Assignees: Citizen Watch Co., Ltd., Citizen Machinery Co., Ltd.
    Inventors: Kazuhiko Sannomiya, Hitoshi Matsumoto, Nobuyoshi Imasaki
  • Publication number: 20190252672
    Abstract: Provided is a lithium secondary battery having a nonaqueous electrolyte which contains at least one compound selected from the group consisting of monofluorophosphoric acid salts, and difluorophosphoric acid salts, in an amount of 10 ppm or more of the whole nonaqueous electrolyte, and a negative electrode selected from [1], [2], [3] and [6]: [1]: a negative electrode containing two or more carbonaceous substances differing in crystallinity; [2]: a negative electrode containing an amorphous carbonaceous substance which, when examined by wide-angle X-ray diffractometry, has an interplanar spacing (d002) for the (002) planes of 0.337 nm or larger and a crystallite size (Lc) of 80 nm or smaller and which, in an examination by argon ion laser Raman spectroscopy, has a Raman. R value of 0.
    Type: Application
    Filed: April 25, 2019
    Publication date: August 15, 2019
    Applicant: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Hidekazu MIYAGI, Ryoichi KATO, Masakazu YOKOMIZO, Hiroyuki UONO, Hitoshi MATSUMOTO, Tomohiro SATOU, Minoru KOTATO, Takayuki NAKAJIMA, Hitoshi SUZUKI, Hiroyuki OSHIMA
  • Publication number: 20190224983
    Abstract: Provided is a liquid injecting apparatus equipped with a liquid injecting head, which is mounted on a carriage and moved reciprocally in a widthwise direction of a target, and a valve unit, which is mounted on the carriage to be supplied with liquid via a supply passage from a liquid retainer and to supply liquid to the liquid injecting head. The valve unit has a pressure chamber connected to the liquid retainer via the supply passage; a valve, which opens or closes the supply passage to supply liquid to the pressure chamber; and a flexible film member, which is displaced based on a negative pressure generated as liquid in the pressure chamber decreases to thereby operate the valve.
    Type: Application
    Filed: March 29, 2019
    Publication date: July 25, 2019
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yoshiharu ARUGA, Toshio KUMAGAI, Hitoshi MATSUMOTO
  • Patent number: 10359765
    Abstract: A control device for a machine tool to produce a plurality of different-shaped products efficiently and successively is provided. In the control device, each driving shaft of modules is assigned to different control systems. The device includes a multi-system program storage part for storing a plurality of multi-system programs to machine a workpiece in different shapes, a multi-system program dividing part for dividing the multi-system programs into machining programs, a divided program storage part for storing the divided machining programs individually, a system-based program storage part for storing the machining programs for the respective control systems, and a machining program selection part for selecting the machining program from the divided program storage part in accordance with the machining step to be executed and for storing the selected machining program in the system-based program storage part for the respective control systems.
    Type: Grant
    Filed: October 5, 2015
    Date of Patent: July 23, 2019
    Assignees: CITIZEN WATCH CO., LTD., CITIZEN MACHINERY CO., LTD.
    Inventors: Takaichi Nakaya, Hitoshi Matsumoto
  • Patent number: 10308032
    Abstract: Provided is a cartridge that improves the effect of agitating ink. The cartridge is mounted to a liquid jetting apparatus that includes an air supply apparatus and a liquid jetting unit, and includes a liquid container that contains liquid, a case that includes the liquid container, and an air bag that is positioned between an internal wall of the case and the liquid container, and contacts with the liquid container in a state of being expanded upon being supplied with air. The air bag includes a first bag and a second bag that is positioned above the first bag. The air bag and the liquid container are aligned in a first direction intersecting an up-down direction. when viewed in the first direction, the first bag is arranged to overlap a lower part of the center in the up-down direction of the liquid container.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: June 4, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Yoshihiro Koizumi, Hitoshi Matsumoto, Masahisa Nawano
  • Patent number: 10293617
    Abstract: Provided is a liquid injecting apparatus equipped with a liquid injecting head, which is mounted on a carriage and moved reciprocally in a widthwise direction of a target, and a valve unit, which is mounted on the carriage to be supplied with liquid via a supply passage from a liquid retainer and to supply liquid to the liquid injecting head. The valve unit has a pressure chamber connected to the liquid retainer via the supply passage; a valve, which opens or closes the supply passage to supply liquid to the pressure chamber; and a flexible film member, which is displaced based on a negative pressure generated as liquid in the pressure chamber decreases to thereby operate the valve.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: May 21, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Yoshiharu Aruga, Toshio Kumagai, Hitoshi Matsumoto
  • Patent number: 10268176
    Abstract: To provide a machine tool and a control device for the machine tool that can smoothly cut a workpiece while segmenting chips by feeding a cutting tool in a feed direction while reciprocally vibrating the cutting tool along the feed direction on the basis of a condition set by a user. The machine tool (100) or the control device (C) includes the control section (C1) that determines a number of rotations of the relative rotation and a number of vibrations of the reciprocal vibration per rotation of the relative rotation when the workpiece (W) is machined in accordance with a vibration frequency dependent on a period in which an operating instruction can be executed.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: April 23, 2019
    Assignees: Citizen Watch Co., Ltd., Citizen Machinery Co., Ltd.
    Inventors: Kazuhiko Sannomiya, Hitoshi Matsumoto, Takanori Shinohara, Hiroshi Shinohara, Toshinari Oyama, Nobuyoshi Imasaki
  • Patent number: 10213889
    Abstract: In a machine tool and a control apparatus thereof, a repetitive movement unit is configured so that the cutting tool performs one repetitive movement with respect to multiple relative rotations between the workpiece and the cutting tool and so that a rotation angle of the relative rotation between the workpiece and the cutting tool during relative movement at a second speed is smaller than a rotation angle of the relative rotation during relative movement at a first speed in one repetitive movement. This configuration limits degradation of machining efficiency when the cutting tool machines the workpiece by performing one repetitive movement with respect to multiple relative rotations between the workpiece and the cutting tool.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: February 26, 2019
    Assignees: Citizen Watch Co., Ltd., Citizen Machinery Co., Ltd.
    Inventors: Kazuhiko Sannomiya, Hitoshi Matsumoto, Nobuyoshi Imasaki
  • Publication number: 20190001455
    Abstract: In a machine tool and a control apparatus thereof, a repetitive movement unit is configured so that the cutting tool performs one repetitive movement with respect to multiple relative rotations between the workpiece and the cutting tool and so that a rotation angle of the relative rotation between the workpiece and the cutting tool during relative movement at a second speed is smaller than a rotation angle of the relative rotation during relative movement at a first speed in one repetitive movement. This configuration limits degradation of machining efficiency when the cutting tool machines the workpiece by performing one repetitive movement with respect to multiple relative rotations between the workpiece and the cutting tool.
    Type: Application
    Filed: September 3, 2018
    Publication date: January 3, 2019
    Inventors: Kazuhiko Sannomiya, Hitoshi Matsumoto, Nobuyoshi Imasaki
  • Patent number: 10105683
    Abstract: A porous member includes a base member and carbon nanostructures. The base member includes a porous body having a porosity of more than or equal to 80%. The carbon nanostructures are formed on a surface of the base member, and have a width of less than or equal to 100 nm. A catalyst member includes a catalyst arranged on surfaces of the carbon nano structures.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: October 23, 2018
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventors: Soichiro Okubo, Takeshi Hikata, Risa Utsunomiya, Teruaki Matsuba, Hitoshi Matsumoto, Yugo Higashi
  • Publication number: 20180257385
    Abstract: Provided is a liquid injecting apparatus equipped with a liquid injecting head, which is mounted on a carriage and moved reciprocally in a widthwise direction of a target, and a valve unit, which is mounted on the carriage to be supplied with liquid via a supply passage from a liquid retainer and to supply liquid to the liquid injecting head. The valve unit has a pressure chamber connected to the liquid retainer via the supply passage; a valve, which opens or closes the supply passage to supply liquid to the pressure chamber; and a flexible film member, which is displaced based on a negative pressure generated as liquid in the pressure chamber decreases to thereby operate the valve.
    Type: Application
    Filed: May 15, 2018
    Publication date: September 13, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yoshiharu ARUGA, Toshio KUMAGAI, Hitoshi MATSUMOTO
  • Patent number: 10066281
    Abstract: An age-hardenable steel having a composition consisting of: C: 0.05 to 0.20%, Si: 0.01 to 0.50%, Mn: 1.5 to 2.5%, S: 0.005 to 0.08%, Cr: more than 0.50% and not more than 1.6%, Al: 0.005 to 0.05%, V: 0.25 to 0.50%, Mo: 0 to 1.0%, Cu: 0 to 0.3%, Ni: 0 to 0.3%, Ca: 0 to 0.005%, and Bi: 0 to 0.4%, the balance being Fe and impurities. Within the impurities, P?0.03%, Ti<0.005%, and N<0.0080%, and [C+0.3Mn+0.25Cr+0.6Mo?0.68], [C+0.1Si+0.2Mn+0.15Cr+0.35V+0.2Mo?1.05], and [?4.5C+Mn+Cr?3.5V?0.8Mo?0.12]. The steel has hardness before aging of not more than 310 HV. After aging, the fatigue strength is not less than 480 MPa and absorbed energy at 20° C. is not less than 12 J.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: September 4, 2018
    Assignees: NIPPON STEEL & SUMITOMO METAL CORPORATION, DENSO CORPORATION
    Inventors: Masashi Higashida, Masato Yuya, Hitoshi Matsumoto, Tatsuya Hasegawa, Yutaka Neishi, Taizo Makino, Kouji Morita, Yoshihiro Tanimura, Toshimasa Ito, Tomomitsu Fukuoka, Tadashi Nishiwaki
  • Publication number: 20180215161
    Abstract: Provided is a cartridge that improves the effect of agitating ink. The cartridge is mounted to a liquid jetting apparatus that includes an air supply apparatus and a liquid jetting unit, and includes a liquid container that contains liquid, a case that includes the liquid container, and an air bag that is positioned between an internal wall of the case and the liquid container, and contacts with the liquid container in a state of being expanded upon being supplied with air. The air bag includes a first bag and a second bag that is positioned above the first bag. The air bag and the liquid container are aligned in a first direction intersecting an up-down direction. when viewed in the first direction, the first bag is arranged to overlap a lower part of the center in the up-down direction of the liquid container.
    Type: Application
    Filed: January 31, 2018
    Publication date: August 2, 2018
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Yoshihiro KOIZUMI, Hitoshi MATSUMOTO, Masahisa NAWANO
  • Patent number: 10029462
    Abstract: A piezoelectric device includes a piezoelectric layer, a first moisture resistant layer, and a second moisture resistant layer stacked in this order. The first moisture resistant layer has a flexibility higher than that of the second moisture resistant layer, and the second moisture resistant layer has a moisture permeability lower than that of the first moisture resistant layer.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: July 24, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Satoshi Kimura, Hitoshi Matsumoto
  • Publication number: 20180178513
    Abstract: A liquid ejecting head (recording head) includes a structure (flow path member) having a plurality of stacked plates (a nozzle plate, a flow path plate, and a diaphragm) in which end surfaces at both sides in one direction are aligned. At least two plates of the plates (the nozzle plate, the flow path plate, and the diaphragm) have different coefficients of linear expansion in the one direction, and holding members are fixed to the end surfaces of the structure (flow path member) at both sides in the one direction, the holding members having stiffness higher than stiffness of a plate having the highest coefficient of linear expansion in the one direction among the plates (the nozzle plate, the flow path plate, and the diaphragm).
    Type: Application
    Filed: December 18, 2017
    Publication date: June 28, 2018
    Inventors: Satoshi KIMURA, Hitoshi MATSUMOTO, Wataru TAKAHASHI, Satoshi SUZUKI
  • Patent number: 10005288
    Abstract: Provided is a liquid injecting apparatus equipped with a liquid injecting head, which is mounted on a carriage and moved reciprocally in a widthwise direction of a target, and a valve unit, which is mounted on the carriage to be supplied with liquid via a supply passage from a liquid retainer and to supply liquid to the liquid injecting head. The valve unit has a pressure chamber connected to the liquid retainer via the supply passage; a valve, which opens or closes the supply passage to supply liquid to the pressure chamber; and a flexible film member, which is displaced based on a negative pressure generated as liquid in the pressure chamber decreases to thereby operate the valve.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: June 26, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Yoshiharu Aruga, Toshio Kumagai, Hitoshi Matsumoto
  • Patent number: 9994943
    Abstract: Rolled steel bar for hot forging consisting, by mass percent, of C: 0.25-0.50%, Si: 0.40-1.0%, Mn: 1.0-1.6%, S: 0.005-0.035%, Al: 0.005-0.050%, V: 0.10-0.30%, N: 0.005-0.030% with the balance being Fe and impurities, i.e., P: 0.035% or less and O: 0.0030% or less, wherein Fn1=C+Si/10+Mn/5+5Cr/22+1.65V?5S/7 is 0.90 to 1.20. The predicted maximum width of nonmetallic inclusions at the time when a cumulative distribution function obtained by extreme value statistical processing by taking the width of nonmetallic inclusion in an R1/2 part of a longitudinal cross section of the steel bar as W (mm) is 99.99% is 100 ?m or narrower. The number density of sulfides each having a circle-equivalent diameter of 0.3 to 1.0 ?m observed per unit area of the R1/2 part of a transverse cross section of the steel bar is 500 pieces/mm2 or higher.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: June 12, 2018
    Assignees: NIPPON STEEL & SUMITOMO METAL CORPORATION, DENSO CORPORATION
    Inventors: Naoki Matsui, Masashi Higashida, Hitoshi Matsumoto, Yutaka Neishi, Taizo Makino, Kouji Morita, Yoshihiro Tanimura, Naoyuki Sashima, Toshimasa Itou
  • Patent number: 9976206
    Abstract: A rolled round steel material contains C: 0.38 to 0.55%, Si: 1.0% or less, Mn: 0.20 to 2.0%, S: 0.005 to 0.10%, Cr: 0.01 to 2.0%, Al: 0.003 to 0.10%, B: 0.0005 to 0.0030%, Ti: 0.047% or less, Cu: 0 to 1.0%, Ni: 0 to 3.0%, Mo: 0 to 0.50%, Nb: 0 to 0.10%, V: 0 to 0.30%, Ca: 0 to 0.005%, and Pb: 0 to 0.30%, a remaining portion being constituted by Fe and an impurities, the impurities containing P in an amount of 0.030% or less and N in an amount of 0.008% or less, and has a chemical composition satisfying [3.4N?Ti?3.4N+0.02]. The microstructure is constituted by ferrite (F), lamellar pearlite (LP), and cementite (C) and microstructural features vary in terms of the lateral, longitudinal and central portions of the steel. This steel material has a high base material toughness and good machinability without performing thermal refining.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: May 22, 2018
    Assignee: NIPPON STEEL & SUMITOMO METAL CORPORATION
    Inventors: Makoto Egashira, Sadanori Horikami, Masashi Higashida, Takahiro Okada, Yutaka Neishi, Tatsuya Hasegawa, Hitoshi Matsumoto