Patents by Inventor Hideyuki Murakami

Hideyuki Murakami 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: 20210147639
    Abstract: A fluororubber composition that is a kneaded mixture of a carbon nanotube masterbatch comprising 4 to 20 parts by weight of multilayer carbon nanotubes, which are fibrous carbon nanostructures that do not contain monolayer carbon nanotubes, based on 100 parts by weight of a fluororubber polymer, and a fluororubber raw material comprising at least a fluororubber polymer and a reinforcing filler, in which the multilayer carbon nanotubes are compounded in an amount of 0.5 to 6 wt. % in the kneaded mixture. The kneading is performed using a roll or a kneader when the fluororubber composition is produced. The fluororubber composition can provide a fluororubber crosslinked molded article that exhibits abrasion resistance and blister resistance.
    Type: Application
    Filed: June 28, 2018
    Publication date: May 20, 2021
    Inventors: Hideyuki MURAKAMI, Shunsuke ABE
  • Publication number: 20210007356
    Abstract: The present invention provides an imide derivative represented by the following formula (1): wherein R1 is substituted by a substituent such as an isothiazolyl group, Q is substituted by a substituent such as a thiophenyl group, and A is substituted by a substituent such as a pyrazolyl group, and an agricultural and horticultural fungicide offering an excellent fungicidal effect in agricultural and horticultural situations, which is characterized by containing the imide derivative as an active ingredient.
    Type: Application
    Filed: February 28, 2019
    Publication date: January 14, 2021
    Applicant: HOKKO CHEMICAL INDUSTRY CO., LTD.
    Inventors: Motoaki MORITA, Atsushi YOSHII, Seiichi KUZUMA, Yuka MORIYA, Junko SAITOH, Hideyuki MURAKAMI
  • Patent number: 10848159
    Abstract: A drive circuit is configured to drive an oscillator to vibrate the oscillator that outputs a monitor signal according to a physical quantity. The drive circuit includes a drive signal generating unit that generates a drive signal having a drive frequency, a phase difference detector that detects a phase difference between the monitor signal and the drive signal, a frequency controller that controls the drive frequency based on the phase difference, automatic gain control (AGC) unit that controls an amplitude of the drive signal according to an amplitude of the monitor signal, and an output unit that outputs the drive signal having the controlled amplitude to the oscillator. This drive circuit can stably drive and vibrate the oscillator.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: November 24, 2020
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Hideyuki Murakami, Takeshi Uemura
  • Publication number: 20200217418
    Abstract: A sealing member for mechanical seals, which is a peroxide vulcanized molded article of a hydrogenated nitrile rubber having a bound acrylonitrile content of less than 20% and an iodine number of 20 mg/100 g or less. The sealing member for mechanical seals is obtained as a peroxide vulcanized molded article of a hydrogenated nitrile rubber composition comprising 0 to 5 parts by weight of carbon black, 20 to 100 parts by weight of silica, and 0.5 to 3 parts by weight of silane coupling agent, based on 100 parts by weight of hydrogenated nitrile rubber, and preferably further compounding 50 parts by weight or less of titanium oxide non-reinforcing filler. The obtained vulcanized molded article is to provide a sealing member for mechanical seals that can achieve desired LLC resistance, and that has excellent compression set characteristics, cold resistance, processability, hardness, etc.
    Type: Application
    Filed: August 21, 2018
    Publication date: July 9, 2020
    Applicant: NOK CORPORATION
    Inventors: Shunsuke ABE, Hideyuki MURAKAMI
  • Publication number: 20200216644
    Abstract: A hydrogenated NBR composition having 40 to 80 parts by weight of silica having a BET specific surface area of 40 to 100 m2/g, and 0.5 to 3 parts by weight of a silane coupling agent, based on 100 parts by weight of a hydrogenated NBR blend of 35 to 50 wt. % of medium- to high-nitrile-content hydrogenated NBR having an acrylonitrile content of 30 to 38%, and 65 to 50 wt. % of high-nitrile-content hydrogenated NBR having an acrylonitrile content of 40 to 46%. The hydrogenated NBR composition satisfies various characteristics required for product functions with respect to HFC134a/PAG oil and HFO1234yf/POE oil.
    Type: Application
    Filed: July 25, 2018
    Publication date: July 9, 2020
    Applicant: NOK CORPORATION
    Inventor: Hideyuki MURAKAMI
  • Patent number: 10359285
    Abstract: An angular velocity sensor including a vibration body having a sensor electrode, a driving electrode, and a monitor electrode. The monitor electrode generates a signal according to vibration of the vibration body. The sensor circuit outputs a signal representing an angular velocity applied to the vibration body. The amplitude determination circuit measures amplitude of vibration of the vibration body. A PLL circuit includes a constant voltage source for generating a constant voltage, a timing switching unit for outputting a voltage by switching selectively between the constant voltage and a voltage corresponding to the monitor signal, and a voltage-controlled oscillator for outputting an oscillation signal having a frequency corresponding to the voltage output from the timing switching unit. When the amplitude measured is smaller than a predetermined value, the timing switching unit outputs the constant voltage output from the constant voltage source and outputs a start-up mode signal.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: July 23, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hideyuki Murakami, Takashi Kawai, Masaki Nakamura
  • Patent number: 10358700
    Abstract: A thermal barrier-coated Ni alloy component includes: a substrate made of a Ni alloy containing Al; an intermediate layer formed on a surface of the substrate; and a thermal barrier layer made of a ceramic and formed on a surface of the intermediate layer. The intermediate layer includes a ?? layer, which is formed from a ??-Ni3Al phase on the surface on the thermal barrier layer side, and contains Pt.
    Type: Grant
    Filed: February 24, 2016
    Date of Patent: July 23, 2019
    Assignees: IHI CORPORATION, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hiroki Yoshizawa, Akira Tateno, Akihiro Sato, Kota Sasaki, Masato Ishida, Yoshito Yasui, Hideyuki Murakami, Hiromichi Murakami
  • Patent number: 10139003
    Abstract: Disclosed is a lip seal for water pump made of a rubber-like elastic material, fixed to a housing as a fixed side and in sliding contact with a shaft rotating relative to the housing; the lip seal having sliding surface with a surface roughness Ra (according to JIS B0601 corresponding to ISO 4287) of 1 to 30 ?m, being obtained by vulcanization-molding of a rubber composition comprising 100 parts by weight of the rubber-like elastic material, 1 to 150 parts by weight of a reinforcing filler, 5 to 90 parts by weight of a non-reinforcing filler having an average particle diameter of 1 ?m or more, 0.1 to 5 parts by weight of a coupling agent, 1 to 15 parts by weight of a co-crosslinking agent, and 0.5 to 10 parts by weight of an organic peroxide. The lip seal effects to prevent softening and volume swelling of the rubber-like elastic material and furthermore the generation of deposits in the rotating shaft, which are problematic for rotation torque and LLC resistance.
    Type: Grant
    Filed: February 17, 2014
    Date of Patent: November 27, 2018
    Assignee: Eagle Industry Co., Ltd.
    Inventors: Takuya Yamanaka, Suguru Yoshida, Masafumi Kato, Hideyuki Murakami
  • Patent number: 10018468
    Abstract: A physical-quantity sensor is configured to be used with a physical-quantity sensor element that outputs a sensor signal in response to a physical quantity. A physical-quantity detection circuit of the physical-quantity sensor includes a signal generating unit for generating a detecting signal and a multiplier that multiplies the sensor signal by the detecting signal. The signal generating unit converts a first phase of a predetermined signal having a frequency corresponding to a frequency of the sensor signal, into a second phase, and calculates an amplitude value corresponding to the second phase as to generate the detecting signal. This physical-quantity sensor improves accuracy of phase adjustment without increasing a sampling frequency.
    Type: Grant
    Filed: October 23, 2014
    Date of Patent: July 10, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hideyuki Murakami, Takashi Kawai
  • Patent number: 9920187
    Abstract: An object of the present invention is to provide an HNBR composition and an HNBR crosslinked body excellent in abrasion resistance and pressure resistance. The object is achieved by an HNBR composition containing 3 to 20 parts by weight of carbon fibers or wollastonite as a hard filler per 100 parts by weight of a hydrogenated nitrile rubber and containing 72 to 87 parts by weight of a carbon black having an average particle diameter of 40 to 50 nm, an iodine adsorption of 35 to 49 g/kg, and a DBP oil absorption of 100 to 160 ml/100 g, as well as an HNBR crosslinked body acquired by crosslinking the HNBR composition.
    Type: Grant
    Filed: March 20, 2015
    Date of Patent: March 20, 2018
    Assignee: NOK Corporation
    Inventors: Takafumi Aiba, Hideyuki Murakami, Kenichi Uchida, Akira Morio, Hiroaki Sato
  • Publication number: 20180041217
    Abstract: A drive circuit is configured to drive an oscillator to vibrate the oscillator that outputs a monitor signal according to a physical quantity. The drive circuit includes a drive signal generating unit that generates a drive signal having a drive frequency, a phase difference detector that detects a phase difference between the monitor signal and the drive signal, a frequency controller that controls the drive frequency based on the phase difference, automatic gain control (AGC) unit that controls an amplitude of the drive signal according to an amplitude of the monitor signal, and an output unit that outputs the drive signal having the controlled amplitude to the oscillator. This drive circuit can stably drive and vibrate the oscillator.
    Type: Application
    Filed: April 11, 2016
    Publication date: February 8, 2018
    Inventors: HIDEYUKI MURAKAMI, TAKESHI UEMURA
  • Patent number: 9885586
    Abstract: A physical quantity sensor includes a detection circuit that outputs a detection value indicating a physical quantity applied to a detecting element and a correction processor that corrects the detection value to output a corrected value. The correction processor causes the corrected value to be substantially 0 (zero) if all of conditions that an absolute value of a time-differentiated value of the detection value is not larger than a predetermined differential threshold and that an absolute value of the corrected value is not larger than a predetermined output threshold are satisfied. This physical quantity sensor prevents the output signal from changing due a temperature change in spite of a small number of components.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: February 6, 2018
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Sho Shimada, Ryota Sudo, Hideyuki Murakami, Shinjiro Ueda
  • Publication number: 20170130032
    Abstract: An object of the present invention is to provide an HNBR composition and an HNBR crosslinked body excellent in abrasion resistance and pressure resistance. The object is achieved by an HNBR composition containing 3 to 20 parts by weight of carbon fibers or wollastonite as a hard filler per 100 parts by weight of a hydrogenated nitrile rubber and containing 72 to 87 parts by weight of a carbon black having an average particle diameter of 40 to 50 nm, an iodine adsorption of 35 to 49 g/kg, and a DBP oil absorption of 100 to 160 ml/100 g, as well as an HNBR crosslinked body acquired by crosslinking the HNBR composition.
    Type: Application
    Filed: March 20, 2015
    Publication date: May 11, 2017
    Applicant: NOK CORPORATION
    Inventors: Takafumi AIBA, Hideyuki MURAKAMI, Kenichi UCHIDA, Akira MORIO, Hiroaki SATO
  • Publication number: 20160334216
    Abstract: An angular velocity sensor including a vibration body having a sensor electrode, a driving electrode, and a monitor electrode. The monitor electrode generates a signal according to vibration of the vibration body. The sensor circuit outputs a signal representing an angular velocity applied to the vibration body. The amplitude determination circuit measures amplitude of vibration of the vibration body. A PLL circuit includes a constant voltage source for generating a constant voltage, a timing switching unit for outputting a voltage by switching selectively between the constant voltage and a voltage corresponding to the monitor signal, and a voltage-controlled oscillator for outputting an oscillation signal having a frequency corresponding to the voltage output from the timing switching unit. When the amplitude measured is smaller than a predetermined value, the timing switching unit outputs the constant voltage output from the constant voltage source and outputs a start-up mode signal.
    Type: Application
    Filed: July 26, 2016
    Publication date: November 17, 2016
    Inventors: Hideyuki MURAKAMI, Takashi KAWAI, Masaki NAKAMURA
  • Patent number: 9435647
    Abstract: An angular velocity sensor including a vibration body having a sensor electrode, a driving electrode, and a monitor electrode. The monitor electrode generates a signal according to vibration of the vibration body. The sensor circuit outputs a signal representing an angular velocity applied to the vibration body. The amplitude determination circuit measures amplitude of vibration of the vibration body. A PLL circuit includes a constant voltage source for generating a constant voltage, a timing switching unit for outputting a voltage by switching selectively between the constant voltage and a voltage corresponding to the monitor signal, and a voltage-controlled oscillator for outputting an oscillation signal having a frequency corresponding to the voltage output from the timing switching unit. When the amplitude measured is smaller than a predetermined value, the timing switching unit outputs the constant voltage output from the constant voltage source and outputs a start-up mode signal.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: September 6, 2016
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Hideyuki Murakami, Takashi Kawai, Masaki Nakamura
  • Patent number: 9392171
    Abstract: A motion sensor includes a sensor element that outputs a sense signal in response to a motion applied thereto and a sensor circuit that senses the motion based on the sense signal. The sensor circuit includes a sensor-element-signal amplifier that receives the sense signal. The sensor-element-signal amplifier operates switchably between at a normal mode and at a low-noise mode that consumes a larger electric power and produces a smaller noise than the normal mode. This motion sensor senses a small motion and a large motion accurately.
    Type: Grant
    Filed: April 10, 2013
    Date of Patent: July 12, 2016
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Takeshi Uemura, Hideyuki Murakami, Shinjiro Ueda, Ryota Sudo
  • Publication number: 20160187136
    Abstract: A physical-quantity sensor is configured to be used with a physical-quantity sensor element that outputs a sensor signal in response to a physical quantity. A physical-quantity detection circuit of the physical-quantity sensor includes a signal generating unit for generating a detecting signal and a multiplier that multiplies the sensor signal by the detecting signal. The signal generating unit converts a first phase of a predetermined signal having a frequency corresponding to a frequency of the sensor signal, into a second phase, and calculates an amplitude value corresponding to the second phase as to generate the detecting signal. This physical-quantity sensor improves accuracy of phase adjustment without increasing a sampling frequency.
    Type: Application
    Filed: October 23, 2014
    Publication date: June 30, 2016
    Inventors: HIDEYUKI MURAKAMI, TAKASHI KAWAI
  • Publication number: 20160168661
    Abstract: A thermal barrier-coated Ni alloy component includes: a substrate made of a Ni alloy containing Al; an intermediate layer formed on a surface of the substrate; and a thermal barrier layer made of a ceramic and formed on a surface of the intermediate layer. The intermediate layer includes a ?? layer, which is formed from a ??-Ni3Al phase on the surface on the thermal barrier layer side, and contains Pt.
    Type: Application
    Filed: February 24, 2016
    Publication date: June 16, 2016
    Applicants: IHI Corporation, NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hiroki YOSHIZAWA, Akira Tateno, Akihiro Sato, Kota Sasaki, Masato Ishida, Yoshito Yasui, Hideyuki Murakami, Hiromichi Murakami
  • Publication number: 20150354706
    Abstract: Disclosed is a lip seal for water pump made of a rubber-like elastic material, fixed to a housing as a fixed side and in sliding contact with a shaft rotating relative to the housing; the lip seal having sliding surface with a surface roughness Ra (according to JIS B0601 corresponding to ISO 4287) of 1 to 30 ?m, being obtained by vulcanization-molding of a rubber composition comprising 100 parts by weight of the rubber-like elastic material, 1 to 150 parts by weight of a reinforcing filler, 5 to 90 parts by weight of a non-reinforcing filler having an average particle diameter of 1 ?m or more, 0.1 to 5 parts by weight of a coupling agent, 1 to 15 parts by weight of a co-crosslinking agent, and 0.5 to 10 parts by weight of an organic peroxide. The lip seal effects to prevent softening and volume swelling of the rubber-like elastic material and furthermore the generation of deposits in the rotating shaft, which are problematic for rotation torque and LLC resistance.
    Type: Application
    Filed: February 17, 2014
    Publication date: December 10, 2015
    Applicant: Eagle Industry Co., Ltd.
    Inventors: Takuya Yamanaka, Suguru Yoshida, Masafumi Kato, Hideyuki Murakami
  • Patent number: 9174416
    Abstract: A mixed powder of an Ni—Al alloy and alumina is produced by heating a first mixed powder, which is prepared by mixing an Ni—Al mixed powder as prepared by mixing an Al powder with Ni in such a manner that Al therein could fall within a range of from 25 atomic % to 60 atomic %, and an alumina powder in a range of from 40% by mass to 60% by mass, in vacuum or in an inert gas atmosphere at a temperature falling within a range of from 600° C. to 1300° C. for at least 1 hour, and then grinding the resulting product.
    Type: Grant
    Filed: March 27, 2013
    Date of Patent: November 3, 2015
    Assignee: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Hideyuki Murakami, Daishi Ohtsubo, Yoko Mitarai, Makoto Nanko