Patents by Inventor Kenji Takenaka

Kenji Takenaka 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: 20240088841
    Abstract: A radio frequency circuit includes carrier amplifiers and peak amplifiers, transformers, a signal output terminal connected to a first end of an output-side coil, an LC series circuit, and a capacitor. An input-side coil is connected, at its first end, to the carrier amplifier, and is connected, at its second end, to the carrier amplifier. An input-side coil is connected, at its first end, to the peak amplifier, and is connected, at its second end, to the peak amplifier. The LC series circuit is connected between the peak amplifier and the ground. The capacitor is connected to a second end of the output-side coil and a first end of an output-side coil. The output-side coil is connected, at its second end, to the ground.
    Type: Application
    Filed: November 24, 2023
    Publication date: March 14, 2024
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Kenji TAHARA, Yoshiaki SUKEMORI, Kae YAMAMOTO, Ryo WAKABAYASHI, Isao TAKENAKA
  • Patent number: 11739245
    Abstract: A thermally conductive polysiloxane composition includes (A) a thermally conductive filler, (B) a polyorganosiloxane resin including at least one polysiloxane having one curable functional group in the molecule thereof, and (C) a siloxane compound having an alkoxysilyl group and a linear siloxane structure.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: August 29, 2023
    Assignee: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
    Inventors: Masanori Takanashi, Isao Iida, Daigo Hirakawa, Kenji Takenaka, Eiji Tanigawa
  • Patent number: 11359124
    Abstract: The present invention relates to a thermally conductive polysiloxane composition comprising: (A) a thermally conductive filler, (B) a siloxane compound having a specified structure; (C) an alkoxysilane compound having a specified structure; (D) a polyorganosiloxane containing at least one aliphatic unsaturated group per molecule; (E) a polyorganohydrogensiloxane having two or more hydrogen atoms bonded to silicon atoms per molecule; and (F) a platinum-based catalyst.
    Type: Grant
    Filed: May 31, 2018
    Date of Patent: June 14, 2022
    Assignee: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
    Inventors: Kenji Takenaka, Atsushi Sakamoto
  • Patent number: 11286349
    Abstract: A siloxane compound represented by the general formula (1): where R1 is a group having an alkoxysilyl group having 1 to 4 carbon atoms, R2 is a linear organosiloxy group represented by the general formula (2): where each R4 is independently a monovalent hydrocarbon group having 1 to 12 carbon atoms, Y is a monovalent hydrocarbon group having 1 to 6 carbon atoms, and d is an integer of 10 to 50, each X is independently a divalent hydrocarbon group having 2 to 10 carbon atoms, each of a and b is independently an integer of 1 or more, c is an integer of 0 or more, a+b+c is an integer of 4 or more, and each R3 is independently a monovalent hydrocarbon group having 1 to 6 carbon atoms.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: March 29, 2022
    Assignee: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
    Inventors: Eiji Tanigawa, Masanori Takanashi, Isao Iida, Daigo Hirakawa, Kenji Takenaka
  • Patent number: 11254849
    Abstract: A method for producing a polyorganosiloxane resin composition including: (a) mixing a thermally-conductive filler having a particle size distribution having a single peak, with a surface treatment agent containing a siloxane to form a mixture, and (b) mixing the mixture from step (a) with a polysiloxane resin.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: February 22, 2022
    Assignee: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
    Inventors: Eiji Tanigawa, Masanori Takanashi, Isao Iida, Daigo Hirakawa, Kenji Takenaka
  • Patent number: 11118056
    Abstract: A thermally conductive polysiloxane composition includes (A) a thermally conductive filler, and (B) at least one member selected from the group consisting of an alkoxysilyl group-containing compound and a dimethylpolysiloxane. The component (A) includes at least two thermally conductive fillers having different average particle diameters, and (A-1) indefinite-shaped aluminum nitride particles having an average particle diameter of 30 ?m to 150 ?m in an amount of at least 20% by mass, based on the mass of a total of the component (A).
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: September 14, 2021
    Assignee: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
    Inventors: Daigo Hirakawa, Masanori Takanashi, Isao Iida, Kenji Takenaka, Eiji Tanigawa
  • Patent number: 11084927
    Abstract: A thermally conductive polysiloxane composition includes (A) a thermally conductive filler, and (B) at least one member selected from the group consisting of an alkoxysilyl group-containing compound and a dimethylpolysiloxane. The component (A) includes at least two thermally conductive fillers having different average particle diameters, and (A-1) indefinite-shaped aluminum nitride particles having an average particle diameter of 30 ?m to 150 ?m in an amount of at least 20% by mass, based on the mass of a total of the component (A).
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: August 10, 2021
    Assignee: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
    Inventors: Daigo Hirakawa, Masanori Takanashi, Isao Iida, Kenji Takenaka, Eiji Tanigawa
  • Publication number: 20210147681
    Abstract: A thermally conductive polysiloxane composition includes (A) a thermally conductive filler, and (B) at least one member selected from the group consisting of an alkoxysilyl group-containing compound and a dimethylpolysiloxane. The component (A) includes at least two thermally conductive fillers having different average particle diameters, and (A-1) indefinite-shaped aluminum nitride particles having an average particle diameter of 30 ?m to 150 ?m in an amount of at least 20% by mass, based on the mass of a total of the component (A).
    Type: Application
    Filed: July 20, 2017
    Publication date: May 20, 2021
    Applicant: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
    Inventors: Daigo HIRAKAWA, Masanori TAKANASHI, Isao IIDA, Kenji TAKENAKA, Eiji TANIGAWA
  • Publication number: 20210147738
    Abstract: A thermally conductive polysiloxane composition includes (A) a thermally conductive filler, (B) a polyorganosiloxane resin including at least one polysiloxane having one curable functional group in the molecule thereof, and (C) a siloxane compound having an alkoxysilyl group and a linear siloxane structure
    Type: Application
    Filed: July 20, 2017
    Publication date: May 20, 2021
    Applicant: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
    Inventors: Masanori TAKANASHI, Isao IIDA, Daigo HIRAKAWA, Kenji TAKENAKA, Eiji TANIGAWA
  • Publication number: 20210147633
    Abstract: A siloxane compound represented by the general formula (1): where R1 is a group having an alkoxysilyl group having 1 to 4 carbon atoms, R2 is a linear organosiloxy group represented by the general formula (2): where each R4 is independently a monovalent hydrocarbon group having 1 to 12 carbon atoms, Y is a monovalent hydrocarbon group having 1 to 6 carbon atoms, and d is an integer of 10 to 50, each X is independently a divalent hydrocarbon group having 2 to 10 carbon atoms, each of a and b is independently an integer of 1 or more, c is an integer of 0 or more, a+b+c is an integer of 4 or more, and each R3 is independently a monovalent hydrocarbon group having 1 to 6 carbon atoms.
    Type: Application
    Filed: July 20, 2017
    Publication date: May 20, 2021
    Applicant: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
    Inventors: Eiji TANIGAWA, Masanori TAKANASHI, Isao IIDA, Daigo HIRAKAWA, Kenji TAKENAKA
  • Publication number: 20200140736
    Abstract: The present invention relates to a thermally conductive polysiloxane composition comprising: (A) a thermally conductive filler, (B) a siloxane compound having a specified structure; (C) an alkoxysilane compound having a specified structure; (D) a polyorganosiloxane containing at least one aliphatic unsaturated group per molecule; (E) a polyorganohydrogensiloxane having two or more hydrogen atoms bonded to silicon atoms per molecule; and (F) a platinum-based catalyst.
    Type: Application
    Filed: May 31, 2018
    Publication date: May 7, 2020
    Applicant: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
    Inventors: Kenji TAKENAKA, Atsushi SAKAMOTO
  • Publication number: 20190161666
    Abstract: A method for producing a polyorganosiloxane resin composition including: (a) mixing a thermally-conductive filler having a particle size distribution having a single peak, with a surface treatment agent containing a siloxane to form a mixture, and (b) mixing the mixture from step (a) with a polysiloxane resin.
    Type: Application
    Filed: November 2, 2016
    Publication date: May 30, 2019
    Applicant: MOMENTIVE PERFORMANCE MATERIALS JAPAN LLC
    Inventors: Eiji TANIGAWA, Masanori TAKANASHI, Isao IIDA, Daigo HIRAKAWA, Kenji TAKENAKA
  • Patent number: 9209471
    Abstract: The present invention relates to a fuel cell assembly and method of manufacturing same, and a bonding part manufacturing method and device. For instance, in a resin frame, a depression part is subsidence formed from a lower-end face toward an upper-end face, and a housing hole is pass-through formed from a top surface of the depression part toward the upper-end face. For instance, the depression part, a cathode-side electrode and an electrolyte film are housed, and in such a circumstance, an anode-side electrode is housed in the housing hole. A portion of the resin frame permeates a gas diffusion layer which configures the anode-side electrode and is a porous body. Via the permeated site, the resin frame and the gas diffusion layer (anode-side electrode) are integrally bonded.
    Type: Grant
    Filed: October 29, 2012
    Date of Patent: December 8, 2015
    Assignee: HONDA MOTOR CO., LTD.
    Inventors: Masayuki Katsuno, Ryugo Fujitsuka, Kenji Takenaka, Gen Okiyama, Ryo Uozumi
  • Publication number: 20150064600
    Abstract: The present invention relates to a fuel cell assembly and method of manufacturing same, and a bonding part manufacturing method and device. For instance, in a resin frame, a depression part is subsidence formed from a lower-end face toward an upper-end face, and a housing hole is pass-through formed from a top surface of the depression part toward the upper-end face. For instance, the depression part, a cathode-side electrode and an electrolyte film are housed, and in such a circumstance, an anode-side electrode is housed in the housing hole. A portion of the resin frame permeates a gas diffusion layer which configures the anode-side electrode and is a porous body. Via the permeated site, the resin frame and the gas diffusion layer (anode-side electrode) are integrally bonded.
    Type: Application
    Filed: October 29, 2012
    Publication date: March 5, 2015
    Inventors: Masayuki Katsuno, Ryugo Fujitsuka, Kenji Takenaka, Gen Okiyama, Ryo Uozumi
  • Patent number: 8510021
    Abstract: A vehicle control system includes a determiner configured to determine whether or not a driver has performed a predetermined acceleration or deceleration operation; a detector configured to detect a value of at least one of a relative rotational position and relative rotational speed of an input shaft and an output shaft, the input shaft being positioned upstream of an engagement portion of driving power transmission members which are engaged with each other with a slack on a driving power transmission path, and the output shaft being positioned downstream of the engagement portion, and a controller configured to execute control for accelerating or decelerating the input shaft or the output shaft to reduce at least one of a contact speed and transmission torque of the driving power transmission members based on the value detected by the detector, if the determiner determines that the driver has performed the acceleration or deceleration operation.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: August 13, 2013
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Kenji Takenaka, Hirohide Matsushima, Osamu Tani, Tomomichi Nose, Masahiro Yamaguchi
  • Patent number: 8138707
    Abstract: Provided is a bipedal walking robot which includes a linear actuator, which connects a crus link and a foot of each leg away from an ankle joint, for driving the foot to rock around the ankle joint with respect to the crus link according to a telescopic motion thereof. The robot is capable of applying a desired moment to the foot for walking on stairs without increasing the linear actuator in size. The linear actuator is disposed in such a way that a telescopic force therefrom acts on a line inclined backward with respect to a connection line connecting a knee joint and the ankle joint. Preferably, a connection portion, which is connected to the crus link, of the linear actuator is disposed backward than from the connection line, and a connection portion, which is connected to the foot, of the linear actuator is disposed forward from the connection line.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: March 20, 2012
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kenji Takenaka, Yoshihisa Matsuoka, Satoru Ichihashi
  • Publication number: 20110130932
    Abstract: A vehicle control system includes a determiner configured to determine whether or not a driver has performed a predetermined acceleration or deceleration operation; a detector configured to detect a value of at least one of a relative rotational position and relative rotational speed of an input shaft and an output shaft, the input shaft being positioned upstream of an engagement portion of driving power transmission members which are engaged with each other with a slack on a driving power transmission path, and the output shaft being positioned downstream of the engagement portion, and a controller configured to execute control for accelerating or decelerating the input shaft or the output shaft to reduce at least one of a contact speed and transmission torque of the driving power transmission members based on the value detected by the detector, if the determiner determines that the driver has performed the acceleration or deceleration operation.
    Type: Application
    Filed: November 24, 2010
    Publication date: June 2, 2011
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Kenji Takenaka, Hirohide Matsushima, Osamu Tani, Tomomichi Nose, Masahiro Yamaguchi
  • Patent number: 7905303
    Abstract: Disclosed is a legged locomotion robot which is structurally simple and is provided with a tiptoe portion in a foot at a low cost. The legged locomotion robot includes an upper body; two locomotive legs connected to the upper body through a joint; and a locomotive foot connected to a tip end of the leg through a joint; wherein the foot is provided with a foot sole serving as a ground contacting portion of the foot, a curved portion is formed at a predefined distance from a tip end of the foot sole, crossing the foot sole laterally, and the curved portion is configured to be thinner than a tiptoe portion of the foot sole.
    Type: Grant
    Filed: January 11, 2010
    Date of Patent: March 15, 2011
    Assignee: Honda Motor Co., Ltd.
    Inventors: Kenji Takenaka, Takumi Shibata
  • Publication number: 20100200312
    Abstract: Disclosed is a legged locomotion robot which is structurally simple and is provided with a tiptoe portion in a foot at a low cost. The legged locomotion robot includes an upper body; two locomotive legs connected to the upper body through a joint; and a locomotive foot connected to a tip end of the leg through a joint; wherein the foot is provided with a foot sole serving as a ground contacting portion of the foot, a curved portion is formed at a predefined distance from a tip end of the foot sole, crossing the foot sole laterally, and the curved portion is configured to be thinner than a tiptoe portion of the foot sole.
    Type: Application
    Filed: January 11, 2010
    Publication date: August 12, 2010
    Applicant: HONDA MOTOR CO., LTD.
    Inventors: Kenji TAKENAKA, Takumi Shibata
  • Patent number: 7769523
    Abstract: A method of estimating an air-intake amount of an internal combustion engine is provided. The method may comprise detecting a fluid energy amount in an interior of an air-intake passage at first and second points in time while an intake valve is closed from a compression stroke to an exhaust stroke, and calculating a predicted air-intake amount using the values of the fluid energy amounts at the first and second points with reference to an air-intake amount calculation map showing a correlation between the values of the fluid energy amounts at the first and second points and the predicted air-intake amount in the intake stroke, the air-intake amount calculation map being pre-created by finding the values of the fluid energy amounts in the air-intake passage at the first and second points and the air-intake amount, for plural running states of the internal combustion engine.
    Type: Grant
    Filed: November 29, 2007
    Date of Patent: August 3, 2010
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Hirohide Matsushima, Kenji Takenaka, Takashi Abe, Ryo Suzuki, Takuya Sakamoto, Yoshinobu Mori