Patents by Inventor Hiroki Ishii

Hiroki Ishii 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: 20180223054
    Abstract: Provided is a thermoplastic resin composition which provides a molded body having excellent thermal conductivity and excellent mechanical characteristics. A thermoplastic resin composition which contains (A) a thermoplastic resin, (B) pitch carbon fibers and (C) graphite, and wherein: the content of the graphite (C) is from 1% by mass to 20% by mass (inclusive) relative to 100% by mass of the thermoplastic resin composition; and a molded body, which is obtained by molding this thermoplastic resin composition and has a thickness of 1 mm, has a thermal conductivity of 10 W/mK or more as determined by a hot wire method.
    Type: Application
    Filed: April 2, 2018
    Publication date: August 9, 2018
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Osamu Okunaka, Hiroki Ishii, Kazuaki Itou, Shuuji Ishiwata
  • Publication number: 20180215901
    Abstract: The present invention provides a polycarbonate resin composition characterized by containing 73 to 94.5 mass % of a polycarbonate resin (A), 5 to 25 mass % of a phosphorus-based flame retardant (B), and 0.1 to 2 mass % of a fluoropolymer (C), and by having a flow value of 1×0.01 to 10×0.01 cm3/sec at 280° C. The present invention also provides a sheet and a film using the polycarbonate resin composition.
    Type: Application
    Filed: August 29, 2016
    Publication date: August 2, 2018
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Haruhiko KUROKAWA, Atsuhiro TOKITA, Hiroki ISHII
  • Publication number: 20180202569
    Abstract: An actuator includes a rod, an electric motor to generate a rotational driving force on supply of electricity, an output shaft to output the rotational driving force of the electric motor to the rod, a feed screw mechanism, and a rotation prevention mechanism. The feed screw mechanism includes a female screw portion formed on one of the output shaft and the rod, and a male screw portion formed on the other to mesh with the female screw portion. The rotation prevention mechanism is configured to regulate rotation of the rod caused by the rotational driving force of the electric motor.
    Type: Application
    Filed: July 7, 2016
    Publication date: July 19, 2018
    Applicants: Nippon Soken, Inc., Denso Corporation
    Inventors: Yasuhiro KAWASE, Yukikatsu OZAKI, Mikio MATSUDA, Tetsuya ITOU, Sadahisa ONIMARU, Hiroki ISHII
  • Publication number: 20180201754
    Abstract: The present invention provides: a polycarbonate resin composition which contains 18-75% by mass of (A) a polycarbonate resin having a viscosity average molecular weight of 28,000-60,000, 5-30% by mass of (B) a phosphorus flame retardant, 18-50% by mass of (C) a fibrous or plate-like inorganic filler, and 0.1-2% by mass of (D) a fluoropolymer; and a sheet and a film, each of which uses this polycarbonate resin composition.
    Type: Application
    Filed: August 29, 2016
    Publication date: July 19, 2018
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Hiroki ISHII, Haruhiko KUROKAWA, Atsuhiro TOKITA
  • Patent number: 9982922
    Abstract: A motor unit, which drives a compressor unit, includes a stator, which generates a rotating magnetic field, and a rotor, which is rotated about a rotational axis by the rotating magnetic field at an inner side of the stator. A drive circuit unit is placed at the inner side of the stator such that a position of the drive circuit unit in a direction of the rotational axis overlaps with the stator.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: May 29, 2018
    Assignee: DENSO CORPORATION
    Inventors: Koji Sakai, Hiroki Ishii
  • Patent number: 9977361
    Abstract: An image forming apparatus includes an image bearer, a charging, a charge power supply to supply a charging bias to the charging device, a developing device, a toner adhesion amount detector, an environment detector, and a controller to determine whether to execute a charging bias adjustment process in which the charging device charges the image bearer to have different potentials, the developing device supplies the toner to the image bearer according to the different potentials, the toner adhesion amount detector detects the amount of toner adhering to the image bearer, and the controller adjusts the charging. The controller includes a memory device to store the environment data, and is configured to compare the environment data with previous environment data stored in the memory device, and determine not to execute the charging bias adjustment process when an environment change amount is not greater than a threshold.
    Type: Grant
    Filed: November 17, 2016
    Date of Patent: May 22, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Hideaki Kanaya, Taichi Urayama, Ryusuke Mase, Hiroki Ishii, Hiroyuki Sugiyama, Saki Izumi, Yuushi Hirayama
  • Publication number: 20180085688
    Abstract: A strip-shaped filter in the shape of a circular arc is arranged at a port opening portion of an oil passage, the port opening portion being in maximum proximity to a spool hole portion or a valve element, to prevent a contaminant in the oil passage from reaching the spool hole portion or the valve element. A groove portion is arranged to extend in a circumferential direction in a wall surface of the upper body which defines the spool hole portion. The port opening portion is defined in the groove portion, and is connected to the oil passage. The filter is housed in the groove portion to close the port opening portion defined in the groove portion.
    Type: Application
    Filed: September 26, 2017
    Publication date: March 29, 2018
    Inventors: Hiroki ISHII, Weiming CHEN
  • Publication number: 20180071970
    Abstract: A method for producing a hot-press-molded article having an exceptional appearance, while preventing the generation of holes or cracks, by hot-press molding a sheet and film of a thermoplastic resin that contains an inorganic filler. The method includes press molding a resin sheet or resin film that contains a thermoplastic resin and fibrous inorganic filler between an upper mold and a lower mold, wherein the resin sheet contains 40-80 parts by mass of the thermoplastic resin and 20-60 parts by mass of the fibrous inorganic filler in 100 parts by mass of the resin sheet, the thickness of the resin sheet is 0.3-1.2 mm, the average fiber length of the fibrous inorganic filler in the molded article is 50-500 ?m, and the length of the surplus portion of the resin sheet arranged on the concave part of the mold used in press molding is 5-50 mm.
    Type: Application
    Filed: April 12, 2016
    Publication date: March 15, 2018
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Hiroki ISHII, Haruhiko KUROKAWA
  • Patent number: 9746097
    Abstract: The present disclosure relates to a solenoid of an electromagnetic valve where the number of processes can be reduced and breaking of a conductive wire can be suppressed in a simple structure, and the solenoid of the electromagnetic valve according to the present disclosure comprises a conductive wire; a bobbin having a tubular winding portion where the conductive wire is wound around in a coil shape and a flange portion disposed on both end portions of the winding portion; a terminal portion which is disposed on the flange portion and protrudes in a planar shape in a direction perpendicular to the central axis of the bobbin on a radially outer side than the winding portion relative to the central axis, and in which two terminals are provided on a distal end portion side; and two wall portions which are disposed on both sides of the terminal portion in a width direction, stand upright in a central axis direction and face each other, wherein both end portions of the conductive wire are drawn out from the bobbi
    Type: Grant
    Filed: February 9, 2017
    Date of Patent: August 29, 2017
    Assignee: NIDEC TOSOK CORPORATION
    Inventors: Hiroki Ishii, Tomohiro Yasuda, Weiming Chen, Yoshihiko Ohira, Takashi Hashimoto, Masaya Kishi
  • Publication number: 20170227138
    Abstract: The present disclosure relates to a solenoid of an electromagnetic valve where the number of processes can be reduced and breaking of a conductive wire can be suppressed in a simple structure, and the solenoid of the electromagnetic valve according to the present disclosure comprises a conductive wire; a bobbin having a tubular winding portion where the conductive wire is wound around in a coil shape and a flange portion disposed on both end portions of the winding portion; a terminal portion which is disposed on the flange portion and protrudes in a planar shape in a direction perpendicular to the central axis of the bobbin on a radially outer side than the winding portion relative to the central axis, and in which two terminals are provided on a distal end portion side; and two wall portions which are disposed on both sides of the terminal portion in a width direction, stand upright in a central axis direction and face each other, wherein both end portions of the conductive wire are drawn out from the bobbi
    Type: Application
    Filed: February 9, 2017
    Publication date: August 10, 2017
    Inventors: Hiroki ISHII, Tomohiro YASUDA, Weiming CHEN, Yoshihiko OHIRA, Takashi HASHIMOTO, Masaya KISHI
  • Publication number: 20170158342
    Abstract: In an aerial vehicle, a malfunction determiner determines whether there is a malfunction in one of thrusters of the aerial vehicle. A flight controller activates the thrusters, and controls the output of each of the thrusters. The flight controller deactivates, when it is determined that there is a malfunction in one of the thrusters as a malfunctioned thruster, the malfunctioned thruster. The flight controller deactivates a selected thruster in the thrusters; the selected thruster being paired to the malfunctioned thruster, and controls the active thrusters except for the deactivated thrusters in all the thrusters to make the flight attitude of the aerial vehicle stable. The flight controller controls the active thrusters to cause the aerial vehicle to land while maintaining the flight attitude of the aerial vehicle being stable.
    Type: Application
    Filed: December 2, 2016
    Publication date: June 8, 2017
    Inventors: Hiroki ISHII, Koji KAWASAKI, Takenori MATSUE, Shinji ANDOU, Hiroyasu BABA
  • Publication number: 20170036376
    Abstract: Provided is an aromatic polycarbonate resin sheet/film which has excellent bending characteristics and surface smoothness. It is found that a sheet having excellent surface smoothness, which cannot be achieved by conventional sheets, can be obtained by adjusting sheet extrusion conditions for a polycarbonate resin sheet/film into which a reinforcing filler is blended. It is also found that a thermally shaped article having excellent appearance can be obtained by using this sheet in pressure molding or in thermal press molding.
    Type: Application
    Filed: April 10, 2015
    Publication date: February 9, 2017
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Haruhiko KUROKAWA, Hiroki ISHII, Masatoshi NAKASHIMA
  • Publication number: 20160181576
    Abstract: A thin sheet or film excellent in flame retardancy and light-blocking properties is provided. A battery pack case and others with high flame retardancy are each molded from this thin film. A thin sheet or film Including a specific phosphorus-containing flame retardant in a polycarbonate resin is excellent in thickness accuracy, flame retardancy and appearance. A thin sheet or film excellent in flame retardancy and also having a thickness of 0.01 to 0.25 mm was formed when controlling its thickness uniformly during sheet or film molding. Further, upon addition of carbon black, the resulting sheet or film was found to have good light-blocking properties and higher flame retardancy. Moreover, when used as a film packaging material for battery packs, the sheet or film of the present invention was found to be excellent in film strength and ultrasonic weldability.
    Type: Application
    Filed: June 18, 2014
    Publication date: June 23, 2016
    Applicants: MITSUBISHI GAS CHEMICAL COMPANY, INC., MGC FILSHEET CO., LTD.
    Inventors: Keiichi ZOUTA, Kimitaka NAKAO, Yuko TAKAGI, Hiroki ISHII
  • Patent number: 9304454
    Abstract: An image forming apparatus includes a fixing member, a pressing member, heat generators, temperature detectors, a power source, and a heat controller. The heat generators include a first heat generator and second heat generators corresponding to an imaged area and a blank area, respectively, of a recording medium. The heat controller controls a power source according to data provided by the temperature detectors, such that a heating area of the fixing member heated by one of the second heat generators located adjacent to the first heat generator acquires a temperature of T1??T, where T1 is a temperature corresponding to the imaged area higher than a temperature T2 corresponding to the blank area, and ?T is a temperature lower than a difference between T1 and T2. The heat controller changes ?T between when a first side thereof is printed upon duplex printing and upon single-sided printing.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: April 5, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Takuya Suganuma, Jun Yura, Takeshi Uchitani, Masaki Sukesako, Hiroki Ishii, Hironobu Takeshita, Shogo Kezuka
  • Publication number: 20150338143
    Abstract: A motor unit, which drives a compressor unit, includes a stator, which generates a rotating magnetic field, and a rotor, which is rotated about a rotational axis by the rotating magnetic field at an inner side of the stator. A drive circuit unit is placed at the inner side of the stator such that a position of the drive circuit unit in a direction of the rotational axis overlaps with the stator.
    Type: Application
    Filed: December 5, 2013
    Publication date: November 26, 2015
    Applicant: DENSO CORPORATION
    Inventors: Koji SAKAI, Hiroki ISHII
  • Publication number: 20150234316
    Abstract: An image forming apparatus includes an image bearer, a charger, an exposure device, a developing device, an image density sensor, and a controller. The controller is configured to charge the image bearer, expose the image bearer with a first exposure that saturates potential of the image bearer after exposure to form a latent image pattern on the image bearer, develop the latent image pattern into a toner pattern while changing a developing electrical field, detect a first image density of the toner pattern, determine developing bias and charging bias, form patterns with the first exposure and a second exposure smaller than the first exposure, detect a second image density of the patterns, and determine an exposure to output an image based on the second image density, the first exposure, and the second exposure.
    Type: Application
    Filed: February 3, 2015
    Publication date: August 20, 2015
    Inventors: Hideaki Kanaya, Jun Yura, Takeshi Uchitani, Shunichi Hashimoto, Yushi Hirayama, Takuya Suganuma, Hiroki Ishii, Hironobu Takeshita, Shogo Kezuka
  • Patent number: 9069271
    Abstract: An image forming apparatus including an image forming device forming a toner image on a recording material, and a fixing device including an endless fixing belt feeding the recording material at a speed of 400 to 1,700 mm/sec while heating to fix the toner image thereon. The fixing belt has a rubber layer located on a substrate and having thickness of 400 ?m to 700 ?m, and a fluorine-containing resin layer located on the rubber layer and having thickness of 2 ?m to 20 ?m. The toner includes a release agent including a microcrystalline wax and/or a synthetic ester wax, and a binder resin including a crystalline polyester and an amorphous polyester. The ratio (W/R) of the height (W) of the third falling peak of the crystalline polyester to the height (R) of the maximum rising peak of the amorphous polyester in the FT-IR spectrum of the toner is 0.045 to 0.850.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: June 30, 2015
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hyo Shu, Hiroki Ishii, Wakana Itoh
  • Publication number: 20150176583
    Abstract: A rotary compression mechanism is provided with a rotor which can rotate about the axis of a shaft mounted to a casing, a cylinder which can rotate about a rotation center eccentric from the shaft, and a drive plate which is installed so as to be capable of swinging relative to one of the cylinder and the rotor and to be capable of sliding relative to the other of the cylinder and the rotor and which rotationally connects the cylinder and the rotor. Spaces which are separated from each other by both a partition point and the drive plate and which are located between the inner surface of the cylinder and the outer periphery of the rotor are operating chambers for performing compression or suction.
    Type: Application
    Filed: June 26, 2013
    Publication date: June 25, 2015
    Inventors: Yoshinori Murase, Akira Inagaki, Hiroki Ishii
  • Patent number: 9025977
    Abstract: An image forming apparatus capable of continuous image formation on multiple pages includes an image bearer to bear an image, a latent image forming unit to form a latent image on the image bearer, a developing device to develop the latent image with toner, a temperature sensor to detect temperature inside the developing device or adjacent to the developing device, a controller to impose a limit on a quantity of pages in continuous image formation and cancel the limit according to a detection result generated by the temperature sensor, and a report unit to report time data indicating when the limit is imposed.
    Type: Grant
    Filed: February 7, 2014
    Date of Patent: May 5, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroyuki Sugiyama, Jun Yura, Masaki Sukesako, Hironobu Takeshita, Takuya Suganuma, Takeshi Uchitani, Hiroki Ishii
  • Publication number: 20150050038
    Abstract: An image forming apparatus includes a fixing member, a pressing member, heat generators, temperature detectors, a power source, and a heat controller. The heat generators include a first heat generator and second heat generators corresponding to an imaged area and a blank area, respectively, of a recording medium. The heat controller controls a power source according to data provided by the temperature detectors, such that a heating area of the fixing member heated by one of the second heat generators located adjacent to the first heat generator acquires a temperature of T1??T, where T1 is a temperature corresponding to the imaged area higher than a temperature T2 corresponding to the blank area, and ?T is a temperature lower than a difference between T1 and T2. The heat controller changes ?T between when a first side thereof is printed upon duplex printing and upon single-sided printing.
    Type: Application
    Filed: August 1, 2014
    Publication date: February 19, 2015
    Inventors: Takuya SUGANUMA, Jun YURA, Takeshi UCHITANI, Masaki SUKESAKO, Hiroki ISHII, Hironobu TAKESHITA, Shogo KEZUKA