Patents by Inventor Naoki Katayama

Naoki Katayama 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: 11366310
    Abstract: A polygonal mirror includes reflecting surfaces, a molded member including a first surface and a second surface, a contact portion, and gate marks. Each of said first surface and said second surface has a polygonal shape. The contact portion and the gate marks are formed at non-overlapping positions with a line segment connecting a vertex of the polygonal shape with a rotation center. The gate marks and the reflecting surfaces are the same in number. A perpendicular bisector of a line segment connecting centers of the gate marks adjacent to each other with respect to a rotational direction of the polygonal mirror is formed at a position passing through an associated vertex of the polygonal shape and the rotation center.
    Type: Grant
    Filed: April 17, 2019
    Date of Patent: June 21, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Naoki Matsushita, Atsushi Takata, Yoshihiko Tanaka, Takatoshi Tanaka, Fumihiko Yamaya, Mitsuhiro Ohta, Hiroki Katayama
  • Publication number: 20220181716
    Abstract: A thermal insulation material for a battery pack includes: a thermal insulation layer; and a first base material and a second base material that are arranged with the thermal insulation layer interposed therebetween. The thermal insulation layer contains a porous structure in which a plurality of particles is connected to form a skeleton, reinforcing fibers, and metal oxide nanoparticles serving as a binder, the porous structure having pores inside and having hydrophobic sites at least on a surface of the porous structure out of the surface and inside of the porous structure, and a percentage mass loss of the thermal insulation layer in thermogravimetric analysis in which the thermal insulation layer is held at 500° C. for 30 minutes is 10% or less.
    Type: Application
    Filed: February 3, 2021
    Publication date: June 9, 2022
    Applicants: Sumitomo Riko Company Limited, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Naoki KATAYAMA, Shinji KUMAGAI, Shota HAYASHI, Yutaro TAGUCHI, Yuji SHINTAKU
  • Patent number: 11353805
    Abstract: An image forming apparatus to form an image on a recording material includes a photosensitive member, an exposure device to form a latent image on the photosensitive member, a tubular body defining a space in which at least a part of the exposure device is contained, and a support portion that supports the exposure device and is provided along a rotation axis direction of the photosensitive member in the space of the tubular body. The image forming apparatus further includes, in the rotation axis direction, a first side plate fixed to one end portion of the tubular body, and a second side plate fixed to another end portion of the tubular body. One support portion end portion in the rotation axis direction is fixed to the first side plate, and another support portion end portion in the rotation axis direction is fixed to the second side plate.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: June 7, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shoji Yamamoto, Akira Yoshimura, Shogo Nagamine, Naoki Matsushita, Yoshihiko Tanaka, Hisanori Kobayashi, Takatoshi Tanaka, Mitsuhiro Ohta, Hiroki Katayama, Akitoshi Toyota
  • Publication number: 20220011379
    Abstract: A power supply system for moving body includes a first power source, a first current path, a second power source, a second current path. The first power source supplies electric power to a redundant load. The first current path connects the first power source and the redundant load. The second power source supplies electric power to the redundant load. The second current path connects the second power source and the redundant load.
    Type: Application
    Filed: September 23, 2021
    Publication date: January 13, 2022
    Applicant: DENSO CORPORATION
    Inventors: Kazuyoshi OBAYASHI, Masaya TAKAHASHI, Naoki KATAYAMA
  • Publication number: 20210402939
    Abstract: A power supply system for a mobile object, includes a normal power supply, a normal current path connected to the normal power supply, a redundant power supply, a redundant current path connected to the redundant power supply. The power supply system further includes a first current path connected to a first redundant load, and a second current path disposed in parallel with the first current path and connected to a second redundant load. The power supply system further includes a path switch including a first normal switch and a second normal switch, and a controller controlling the path switch. The normal power supply is connected to a normal load, and is connectable to at least one of the first redundant load and the second redundant load.
    Type: Application
    Filed: September 13, 2021
    Publication date: December 30, 2021
    Applicant: DENSO CORPORATION
    Inventors: Kazuyoshi OBAYASHI, Naoki KATAYAMA
  • Publication number: 20210332932
    Abstract: A heat insulating material (1) includes a heat insulating layer (10) which has a porous structural body, a reinforcing fiber, and nanoparticles of a metal oxide used as a binder, wherein the porous structural body has a skeleton formed by connecting a plurality of particles, has pores inside, and has a hydrophobic portion on at least one surface between a surface and an inside of the porous structural body. The heat insulating layer (10) has a mass loss rate of 10% or less in thermogravimetric analysis held at 500° C. for 30 minutes.
    Type: Application
    Filed: July 9, 2021
    Publication date: October 28, 2021
    Applicant: Sumitomo Riko Company Limited
    Inventors: Shinji KUMAGAI, Naoki KATAYAMA, Shota HAYASHI, Yutaro TAGUCHI
  • Patent number: 10886869
    Abstract: A control apparatus is applied to a vehicle including (i) a rotating electrical machine and (ii) a wheel speed sensor detecting a wheel speed. The control apparatus sets a rotation angle of the rotating electrical machine based on an estimated value of the rotation angle which is estimated based on a detection value of the wheel speed sensor.
    Type: Grant
    Filed: August 6, 2019
    Date of Patent: January 5, 2021
    Assignee: DENSO CORPORATION
    Inventors: Minoru Ishida, Naoki Katayama, Tsubasa Sakuishi, Yuki Takahashi
  • Patent number: 10875418
    Abstract: In a charging control apparatus, a supply power requestor requests an external power source to output supply power having a constant voltage and a constant current. A voltage conversion instructor instructs a voltage conversion device to perform voltage conversion of the supply power from the external power source such that converted supply power has a charging voltage and a charging current that are respectively within allowable charging-voltage range and allowable charging-current range. The voltage conversion instructor instructs the voltage conversion device to output the converted supply power to the power storage to thereby charge the power storage.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: December 29, 2020
    Assignee: DENSO CORPORATION
    Inventors: Minoru Ishida, Naoki Katayama, Tsubasa Sakuishi
  • Publication number: 20200106338
    Abstract: A rotating electric machine includes a rotor rotatably supported and also including a magnet portion; a stator including a stator winding; and a plunger configured to displace the rotor and the stator relative to one another along an axial direction of the rotating electric machine. The stator includes a slotless structure in which at least one of no magnetic teeth and slot is provided. Thus, an attracting force acting between the magnet portion and the stator is weakened, thereby the rotor and the stator are easily displaceable relative to each other by the plunger.
    Type: Application
    Filed: October 1, 2019
    Publication date: April 2, 2020
    Applicant: DENSO CORPORATION
    Inventors: Minoru ISHIDA, Naoki KATAYAMA, Tsubasa SAKUISHI, Yuki TAKAHASHI
  • Publication number: 20200052639
    Abstract: A control apparatus is applied to a vehicle including (i) a rotating electrical machine and (ii) a wheel speed sensor detecting a wheel speed. The control apparatus sets a rotation angle of the rotating electrical machine based on an estimated value of the rotation angle which is estimated based on a detection value of the wheel speed sensor.
    Type: Application
    Filed: August 6, 2019
    Publication date: February 13, 2020
    Applicant: DENSO CORPORATION
    Inventors: Minoru ISHIDA, Naoki KATAYAMA, Tsubasa SAKUISHI, Yuki TAKAHASHI
  • Publication number: 20200009980
    Abstract: In a charging control apparatus, a supply power requestor requests an external power source to output supply power having a constant voltage and a constant current. A voltage conversion instructor instructs a voltage conversion device to perform voltage conversion of the supply power from the external power source such that converted supply power has a charging voltage and a charging current that are respectively within allowable charging-voltage range and allowable charging-current range. The voltage conversion instructor instructs the voltage conversion device to output the converted supply power to the power storage to thereby charge the power storage.
    Type: Application
    Filed: July 8, 2019
    Publication date: January 9, 2020
    Applicant: DENSO CORPORATION
    Inventors: Minoru ISHIDA, Naoki KATAYAMA, Tsubasa SAKUISHI
  • Patent number: 10406909
    Abstract: A control device for an internal combustion engine for a vehicle having: an internal combustion engine; and an electric motor connected to an output shaft of the internal combustion engine and applying torque to the output shaft by use of electric power supplied from storage batteries. The control device automatically stops the internal combustion engine when an automatic stop condition is satisfied. The control device disables automatic stop from being carried out when an automatic stop disabling condition is satisfied. And the control device decreases an output of the internal combustion engine and increases an output of the electric motor when the automatic stop condition of the internal combustion engine is disabled and when the automatic stop condition is satisfied but the automatic stop disabling condition is not satisfied.
    Type: Grant
    Filed: May 18, 2016
    Date of Patent: September 10, 2019
    Assignee: DENSO CORPORATION
    Inventor: Naoki Katayama
  • Publication number: 20180141427
    Abstract: A control device for an internal combustion engine for a vehicle having: an internal combustion engine; and an electric motor connected to an output shaft of the internal combustion engine and applying torque to the output shaft by use of electric power supplied from storage batteries. The control device automatically stops the internal combustion engine when an automatic stop condition is satisfied. The control device disables automatic stop from being carried out when an automatic stop disabling condition is satisfied. And the control device decreases an output of the internal combustion engine and increases an output of the electric motor when the automatic stop condition of the internal combustion engine is disabled and when the automatic stop condition is satisfied but the automatic stop disabling condition is not satisfied.
    Type: Application
    Filed: May 18, 2016
    Publication date: May 24, 2018
    Applicant: DENSO CORPORATION
    Inventor: Naoki KATAYAMA
  • Patent number: 9859738
    Abstract: A battery system controller is provided which is used for a battery system including a generator, electrical loads, a lead storage battery, a high performance storage battery which has higher-power and higher-energy density, and an opening and closing switch which switches the generator and the lead storage battery, and the high performance storage battery to an electrically conducting state or an interrupted state, a terminal voltage of the high performance storage battery being controlled so as to be lower than a terminal voltage of the lead storage battery. The battery system controller includes a control unit which allows the opening and closing switch to switch from an electrically conducting state to an interrupted state on the condition that charging current flowing to the high performance storage battery is smaller than a determination value, the larger an internal resistance of the lead storage battery, the smaller the determination value is set.
    Type: Grant
    Filed: July 11, 2013
    Date of Patent: January 2, 2018
    Assignee: DENSO CORPORATION
    Inventors: Naoki Katayama, Shigenori Saito
  • Patent number: 9649950
    Abstract: A power supply apparatus includes a generator, lead-battery, and second-battery. Open-circuit voltages and internal resistances of the batteries are determined so that: there is a point, where the open-circuit voltage of the second-battery coincides with that of the lead-battery, in a region on a smaller-residual-capacity side relative to a range of use in an entire-residual-capacity range of the second-battery; the open-circuit voltage of the second-battery is larger than that of the lead-battery in the range of use of the second-battery; the internal resistance of the second-battery is smaller than that of the lead-battery in a charging state of the generator; and a terminal voltage of the second-battery in a state where a maximum charge current is passed through the second-battery is smaller than a regulated voltage in a power-generation state of the generator. An opening/closing section is closed in at least one of a power-generation state and a load-activated state.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: May 16, 2017
    Assignee: DENSO CORPORATION
    Inventors: Naoki Katayama, Toshiyo Teramoto
  • Patent number: 9399706
    Abstract: To provide a urethane foam molded product having high thermal conductivity and electric insulation and a method for producing the same. A urethane foam molded product includes a base material made of a polyurethane foam and composite particles that are blended in the base material and oriented in a mutually connected state, in which each of the composite particles includes a thermally conductive particle made of a non-magnetic body, and a magnetic particle and an insulating inorganic particle that are adhered to the surface of the thermally conductive particle through a binder. A powder of the composite particles can be produced by stirring a powder raw material containing a powder of the thermally conductive particle, a powder of the magnetic particle, a powder of the insulating inorganic particle, and the binder using a stirring granulator.
    Type: Grant
    Filed: October 2, 2013
    Date of Patent: July 26, 2016
    Assignee: SUMITOMO RIKO COMPANY LIMITED
    Inventors: Naoki Katayama, Koji Tomiyama, Yasuo Suzuki
  • Patent number: D906243
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: December 29, 2020
    Assignee: EBARA CORPORATION
    Inventors: Yohei Oishi, Takahide Ozawa, Kazuma Nishimura, Takayuki Kuronuma, Akihiro Ochiai, Ryoko Ikegami, Prateek Ninave, Naoki Katayama
  • Patent number: D906256
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: December 29, 2020
    Assignee: EBARA CORPORATION
    Inventors: Yohei Oishi, Takahide Ozawa, Kazuma Nishimura, Takayuki Kuronuma, Akihiro Ochiai, Ryoko Ikegami, Prateek Ninave, Naoki Katayama
  • Patent number: D924800
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: July 13, 2021
    Assignee: EBARA CORPORATION
    Inventors: Yohei Oishi, Takahide Ozawa, Kazuma Nishimura, Takayuki Kuronuma, Akihiro Ochiai, Ryoko Ikegami, Prateek Ninave, Naoki Katayama
  • Patent number: D925449
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: July 20, 2021
    Assignee: EBARA CORPORATION
    Inventors: Yohei Oishi, Takahide Ozawa, Kazuma Nishimura, Takayuki Kuronuma, Akihiro Ochiai, Ryoko Ikegami, Prateek Ninave, Naoki Katayama