Patents by Inventor Masato Higuchi

Masato Higuchi 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: 10836058
    Abstract: Provided is a method of producing an outer blade for a hair cutting device from a material including bars that each have a shape of a rectangular stick and are arranged at predetermined intervals. The material is placed on a base. Next, a first tool having a leading end that has a gradually increasing width in a direction away from the material is used to press at least one part of each of the bars in a direction from a counter base-side first face of each of the bars toward a base-side second face of each of the bars. An edge of the first face of each of the bars is caused to project widthwise and to move toward the second face to be farther from an intermediate part of the first face.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: November 17, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Masato Omori, Katsuhiro Higuchi, Hiroyuki Naoe, Koji Yamada, Hiroaki Shimizu, Shoki Okura
  • Publication number: 20200350813
    Abstract: A driving circuit for a semiconductor circuit which includes a pair of main terminals through which a main current is conducted and a control terminal to which a control voltage is applied to control a circulation state of the main current, includes: driving voltage switching circuitry that receives a control signal, instructs switching between driving voltages based on a change in the control signal, and outputs a driving voltage, among the driving voltages, that has been selected in the switching; low-speed control circuitry that instructs an increase-decrease change in the control voltage at a low speed; speed-increase control circuitry that executes a speed-increase control of increasing a speed of the increase-decrease change made by the low-speed control circuitry; and speed-increase switching circuitry that instructs switching between an execution and a non-execution of the speed-increase control, and instructs switching between levels of a speed-increase change caused by the speed-increase control.
    Type: Application
    Filed: July 23, 2020
    Publication date: November 5, 2020
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Yu UJITA, Masato HIGUCHI, Daisuke YOSHIMI, Heiji KANEDA
  • Publication number: 20200280258
    Abstract: A device includes: a first power conversion circuitry configured to convert primary-side power into secondary-side power; and a control circuitry configured to: generate a command value associated with the secondary-side power; calculate a limited command value by modifying the command value so that the command value is equal to or less than a secondary-side limit, wherein the first power conversion circuitry is controlled based on the limited command value; transmit the limited command value to a second power conversion device comprising a second power conversion circuitry connected in parallel to the first power conversion circuitry; receive, from the second power conversion device, information indicating an adjustment value, wherein the adjustment value is added to the limited command value for controlling the second power conversion circuitry; and modify the secondary-side limit based on a difference between a primary-side limit associated with the primary-side power and the adjustment value.
    Type: Application
    Filed: February 20, 2020
    Publication date: September 3, 2020
    Inventors: Akira YAMAZAKI, Kentaro INOMATA, Masato HIGUCHI
  • Publication number: 20200270518
    Abstract: A semiconductor phosphor configured to exhibit photoluminescence upon irradiation with excitation light, including: at least one active layer made of a compound semiconductor and containing an n-type or p-type dopant; and at least two barrier layers made of a compound semiconductor and having a larger band gap than the active layer. The active layer and the barrier layers are alternately stacked. This provides a semiconductor phosphor which allows easy wavelength adjustment, high efficiency and stability.
    Type: Application
    Filed: October 11, 2018
    Publication date: August 27, 2020
    Applicant: SHIN-ETSU HANDOTAI CO., LTD.
    Inventors: Susumu HIGUCHI, Kenji SAKAI, Masato YAMADA, Masanobu TAKAHASHI, Junya ISHIZAKI
  • Publication number: 20200176921
    Abstract: A connector is provided with a cable that includes a conductor and an insulation, connector bodies that are provided on one ends in an extending direction of the cable, and a cover unit that covers and integrates each of the one ends of the cable and each of the connector bodies. The cable includes a first cohesion unit provided on a surface of the insulation at each of one ends over an entire circumference around the extending direction of the cable, and fixed to the cover unit so as to be detachable by cohesive fracture.
    Type: Application
    Filed: November 2, 2018
    Publication date: June 4, 2020
    Applicant: OMRON Corporation
    Inventors: Hirokazu HOSHINO, Taijiro FUJIWARA, Masato MATOBA, Masaki NAKAMURA, Masaru HIGUCHI, Hiroshi OKUYAMA
  • Publication number: 20200144930
    Abstract: A power conversion apparatus connectable in parallel to a second power conversion apparatus includes circuitry that generates a carrier wave, generates a pulse signal synchronized with the carrier wave, generates power that is based on a width of the pulse signal, obtains a monitor value corresponding to a circulating current circulating between the power conversion apparatus and the second power conversion apparatus, and based on the monitor value obtained while the power conversion circuitry is generating driving power, changes a period of the carrier wave to decrease the circulating current.
    Type: Application
    Filed: November 1, 2019
    Publication date: May 7, 2020
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Kentaro Inomata, Akira Yamazaki, Masato Higuchi, Hidenori Hara
  • Publication number: 20200078997
    Abstract: In an injection process, molten resin is successively injected from a first flow channel and a second flow channel connected with each other in order into a cavity of a metal mold. High-temperature resin existing in the first flow channel is injected in advance into the cavity as a part of a single shot of molten resin to later form a skin layer of a molded article. other low temperature resin near a flowable limit existing in the second flow channel is subsequently injected into the cavity as another part of the single shot of molten resin to later form a core layer of the molded article. A low temperature resin remaining in the first flow channel when injection is completed is warmed to be a high-temperature resin before the next cycle, thereby allowing successive molding of molded articles.
    Type: Application
    Filed: September 5, 2019
    Publication date: March 12, 2020
    Inventors: Tohru HIGUCHI, Masato ICHIKAWA, Tsuyoshi ARAI, Jun HASEBE, Atsushi KAWAMURA, Tomoyoshi MURATA
  • Patent number: 9515575
    Abstract: A controller of a power conversion apparatus according to an embodiment causes a chopper and an inverter to generate an alternating-current (AC) voltage including first and second parts of an AC voltage waveform and causes the inverter to output the AC voltage. The chopper generates the first part having an absolute value higher than a voltage of a DC power supply, and the inverter generates the second part having an absolute value lower than the voltage of the DC power supply. The controller is configured to alternately turn on the first and second switching elements in a period during which the controller controls the chopper to generate the first part of the AC voltage waveform.
    Type: Grant
    Filed: April 29, 2015
    Date of Patent: December 6, 2016
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Tetsumi Narita, Masato Higuchi, Yasuhiko Kawanami, Hidenori Hara, Takamitsu Katsuki
  • Patent number: 9484839
    Abstract: A power converter according to one embodiment includes a controller that switches between a boosting operation in a boost circuit and a pulse-width modulation operation in a single-phase inverter. The controller modifies an output from a voltage detection filter based on a delay compensating value for compensating a detection delay introduced by the voltage detection filter, when switching is performed the boosting operation in the boost circuit to the PWM operation in the single-phase inverter.
    Type: Grant
    Filed: January 29, 2015
    Date of Patent: November 1, 2016
    Assignee: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Seiji Fujisaki, Mamoru Takaki, Shinya Morimoto, Masato Higuchi
  • Patent number: 9314833
    Abstract: An outer ring 6a for a shell-type radial needle bearing having a cylindrical shape with a bottom is achieved for which fatigue life of the bottom plate section 9a and the continuous section between the bottom plate section 9a and the cylindrical section 8a is improved, as well as the anti-corrosion characteristic of the outer ring 6a is improved and the outer ring 6a can be prevented from coming out of the bearing without an increase in cost. After obtaining an intermediate raw material 35 having a cylindrical section and a bottom plate section from a metal raw material, shot peening is performed on the intermediate material 35 to create residual compressive stress in the surface and surface layer section on the outer surface side of the cylindrical section 8a and the bottom plate section 9a such that the residual compressive stress in the surface layer section on the outer surface side is greater than the in the surface layer section on the inner surface side, and from the surface to a depth of 0.
    Type: Grant
    Filed: August 13, 2014
    Date of Patent: April 19, 2016
    Assignee: NSK LTD.
    Inventors: Masato Higuchi, Noriyuki Takeo, Yoshiaki Komura
  • Publication number: 20150270787
    Abstract: A power converter according to one embodiment includes a controller that switches between a boosting operation in a boost circuit and a pulse-width modulation operation in a single-phase inverter. The controller modifies an output from a voltage detection filter based on a delay compensating value for compensating a detection delay introduced by the voltage detection filter, when switching is performed the boosting operation in the boost circuit to the PWM operation in the single-phase inverter.
    Type: Application
    Filed: January 29, 2015
    Publication date: September 24, 2015
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Seiji FUJISAKI, Mamoru TAKAKI, Shinya MORIMOTO, Masato HIGUCHI
  • Publication number: 20150244287
    Abstract: A controller of a power conversion apparatus according to an embodiment causes a chopper and an inverter to generate an alternating-current (AC) voltage including first and second parts of an AC voltage waveform and causes the inverter to output the AC voltage. The chopper generates the first part having an absolute value higher than a voltage of a DC power supply, and the inverter generates the second part having an absolute value lower than the voltage of the DC power supply. The controller is configured to alternately turn on the first and second switching elements in a period during which the controller controls the chopper to generate the first part of the AC voltage waveform.
    Type: Application
    Filed: April 29, 2015
    Publication date: August 27, 2015
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Tetsumi NARITA, Masato HIGUCHI, Yasuhiko KAWANAMI, Hidenori HARA, Takamitsu KATSUKI
  • Patent number: 9034789
    Abstract: Provided are an adsorptive carbon which can effectively adsorb vivotoxins such as advanced glycation end products (AGEs), and an adsorbent containing the adsorptive carbon as an active ingredient. The adsorptive carbon according to the present invention has a total pore volume of 0.10 to 1.0 mL/g, an average pore diameter of 1.0 to 2.0 nm, and an absorbance of an infrared absorption band at 1650-1800 cm?1 of no less than 0.005.
    Type: Grant
    Filed: March 2, 2011
    Date of Patent: May 19, 2015
    Assignee: DISEASE ADSORPTION SYSTEM TECHNOLOGIES CO., LTD.
    Inventors: Masato Higuchi, Takao Kimura, Masayoshi Takeuchi, Kisaburo Deguchi
  • Patent number: 8939844
    Abstract: Cross-type universal joint and a shell-type needle bearing that is used therein. The portions on the outer surface of the shell-type outer ring for which there is a possibility of coming in sliding contact with the tip end edges of at least two seal lips of a plurality of seal lips of a seal ring are selectively covered with a corrosion resistant coating. Preferably, the entire outer surface of the shell-type outer ring is covered by a chemically treated film having anti-corrosion properties.
    Type: Grant
    Filed: January 25, 2012
    Date of Patent: January 27, 2015
    Assignee: NSK Ltd.
    Inventors: Masato Higuchi, Eisho Watanabe
  • Publication number: 20140366379
    Abstract: An outer ring 6a for a shell-type radial needle bearing having a cylindrical shape with a bottom is achieved for which fatigue life of the bottom plate section 9a and the continuous section between the bottom plate section 9a and the cylindrical section 8a is improved, as well as the anti-corrosion characteristic of the outer ring 6a is improved and the outer ring 6a can be prevented from coming out of the bearing without an increase in cost. After obtaining an intermediate raw material 35 having a cylindrical section and a bottom plate section from a metal raw material, shot peening is performed on the intermediate material 35 to create residual compressive stress in the surface and surface layer section on the outer surface side of the cylindrical section 8a and the bottom plate section 9a such that the residual compressive stress in the surface layer section on the outer surface side is greater than the in the surface layer section on the inner surface side, and from the surface to a depth of 0.
    Type: Application
    Filed: August 13, 2014
    Publication date: December 18, 2014
    Inventors: Masato HIGUCHI, Noriyuki TAKEO, Yoshiaki KOMURA
  • Patent number: 8834034
    Abstract: An outer ring 6a for a shell-type radial needle bearing having a cylindrical shape with a bottom is achieved for which fatigue life of the bottom plate section 9a and the continuous section between the bottom plate section 9a and the cylindrical section 8a is improved, as well as the anti-corrosion characteristic of the outer ring 6a is improved and the outer ring 6a can be prevented from coming out of the bearing without an increase in cost. After obtaining an intermediate raw material 35 having a cylindrical section and a bottom plate section from a metal raw material, shot peening is performed on the intermediate material 35 to create residual compressive stress in the surface and surface layer section on the outer surface side of the cylindrical section 8a and the bottom plate section 9a such that the residual compressive stress in the surface layer section on the outer surface side is greater than the in the surface layer section on the inner surface side, and from the surface to a depth of 0.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: September 16, 2014
    Assignee: NSK Ltd.
    Inventors: Masato Higuchi, Noriyuki Takeo, Yoshiaki Komura
  • Publication number: 20130258736
    Abstract: A power module includes a power module body portion. The power module body portion includes a P-side conductive plate, a first N-side conductive plate, and a second N-side conductive plate that are disposed with a distance thereamong in the power module body portion, P-side semiconductor elements that are disposed on a front surface of the P-side conductive plate, N-side semiconductor elements that are disposed on a front surface of the first N-side conductive plate and that are electrically connected to the P-side semiconductor elements, and a capacitor that is disposed between the P-side semiconductor elements and the N-side semiconductor elements so as to be connected to the P-side conductive plate and the second N-side conductive plate in the power module body portion and that suppresses a surge voltage.
    Type: Application
    Filed: May 30, 2013
    Publication date: October 3, 2013
    Applicant: KABUSHIKI KAISHA YASKAWA DENKI
    Inventors: Masato HIGUCHI, Yasuhiko KAWANAMI
  • Patent number: 8547714
    Abstract: There are provided an output inverter for single phase which can detect a current with high precision through a smaller number of components, and an output current detecting method thereof. A first current detector (6) is disposed between a positive electrode P side of a DC power supply and a parallel connector (1) in a first arm (8), a second current detector (7) is disposed between a negative electrode N side of the DC power supply and a parallel connector (4) in a second arm (9), a current in a first convection mode is detected by the first current detector (6), a current in a second convection mode is detected by the second current detector (7), and an output current is detected from signals output from the first current detector (6) and the second current detector (7).
    Type: Grant
    Filed: December 25, 2006
    Date of Patent: October 1, 2013
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventor: Masato Higuchi
  • Patent number: 8546926
    Abstract: The present power converter includes a power conversion semiconductor device, an electrode connection conductor which electrically connects multiple electrodes having the same potential, and also has a generally flat upper surface for electrically connecting to an exterior portion, and a sealing material provided so as to cover the power conversion semiconductor device, and also to expose the generally flat upper surface of the electrode connection conductor.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: October 1, 2013
    Assignee: Kabushiki Kaisha Yaskawa Denki
    Inventors: Yasuhiko Kawanami, Masato Higuchi, Akira Sasaki, Akira Soma, Tasuku Isobe, Tetsuya Ito
  • Patent number: RE47828
    Abstract: An outer ring 6a for a shell-type radial needle bearing having a cylindrical shape with a bottom is achieved for which fatigue life of the bottom plate section 9a and the continuous section between the bottom plate section 9a and the cylindrical section 8a is improved, as well as the anti-corrosion characteristic of the outer ring 6a is improved and the outer ring 6a can be prevented from coming out of the bearing without an increase in cost. After obtaining an intermediate raw material 35 having a cylindrical section and a bottom plate section from a metal raw material, shot peening is performed on the intermediate material 35 to create residual compressive stress in the surface and surface layer section on the outer surface side of the cylindrical section 8a and the bottom plate section 9a such that the residual compressive stress in the surface layer section on the outer surface side is greater than the in the surface layer section on the inner surface side, and from the surface to a depth of 0.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: January 28, 2020
    Assignee: NSK LTD.
    Inventors: Masato Higuchi, Noriyuki Takeo, Yoshiaki Komura