Patents by Inventor Hiroaki Kato

Hiroaki Kato 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: 7939212
    Abstract: A flux control apparatus includes an outlet pressure detector for detecting an outlet pressure of a fluid at an outlet of a fluid flow apparatus driven by a drive source for feeding the fluid from an inlet of the fluid flow apparatus and letting the fluid flow out from the outlet of the fluid flow apparatus, a drive amount detector for detecting an amount of drive of the drive source, an estimated flux-calculating apparatus for calculating a flux of the fluid flowing from the fluid flow apparatus as an estimated flux on the basis of the pressure of the fluid and the amount of drive, a control amount-calculating apparatus for calculating an amount of control for the fluid flow apparatus on the basis of the estimated flux and a target flux, and a control apparatus for controlling the drive source on the basis of the amount of control.
    Type: Grant
    Filed: December 6, 2005
    Date of Patent: May 10, 2011
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hiroaki Kato, Kazumasa Takada
  • Publication number: 20110071755
    Abstract: A navigation equipment includes a user position observing unit 15 for calculating the position of the navigation equipment by using the pseudo range and position of each GPS satellite, and a pseudo range error, a user velocity and heading observing unit 16 for calculating the velocity of the navigation equipment from a measured range rate, the position of each GPS satellite, and the position of the navigation equipment, and a user heading searching unit 17 for, when a multipath error is smaller than a specified value, searching for, as the heading of the navigation equipment, a heading whose range rate, which is calculated from a relative movement between the navigation equipment when the navigation equipment changes its heading within a predetermined angle range and a GPS satellite, matches the measured range rate.
    Type: Application
    Filed: July 7, 2008
    Publication date: March 24, 2011
    Inventors: Tadatomi Ishigami, Masatoshi Fujii, Keika Kan, Sadami Ouchi, Hiroaki Kato, Takeshi Nita, Atsushi Mori
  • Patent number: 7878295
    Abstract: A vehicle steering apparatus 1 includes an EPS actuator 17 and an EPS ECU 18 that controls the EPS actuator 17. The EPS actuator 17 applies an assist force that assists a steering operation. A microcomputer 43 of the EPS ECU 18 determines whether the currently executed oversteer control (OS control) is being intensified or converged. In the OS control intensification state, in which the vehicle stability is low, the microcomputer 43 reduces a damper compensation current command Idp* (Idp**), which is a damper compensation component for attenuating a steering wheel turning speed ?s.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: February 1, 2011
    Assignee: JTEKT Corporation
    Inventors: Hiroaki Kato, Satoru Mikamo
  • Publication number: 20100292915
    Abstract: A car navigation system includes a distance sensor 2; an angular velocity sensor 1 for detecting angular velocity having a sensor detection axis in a vertical direction of a casing; an acceleration sensor 3 for detecting acceleration having a sensor detection axis in a back and forth direction of the casing on a horizontal plane; a body velocity and acceleration measuring unit 42 for measuring velocity and acceleration in the body direction of vehicle movement from the signal from the distance sensor; an angular velocity measuring unit 41 for measuring angular velocity from the signal from the angular velocity sensor; a body roll angle estimating unit 43 for estimating a body roll angle from the body direction of vehicle movement velocity and angular velocity; an acceleration sensor output estimating unit 45 for outputting, when the casing is set in the body with a rotation in a yaw direction, estimation values of the output signal of the acceleration sensor at every prescribed angle; and a yaw direction moun
    Type: Application
    Filed: November 1, 2007
    Publication date: November 18, 2010
    Inventors: Tadatomi Ishigami, Masatoshi Fujii, Shigeki Kumagai, Keika Kan, Sadami Ouchi, Hiroaki Kato
  • Patent number: 7833686
    Abstract: A toner kit containing at least a black toner, a yellow toner, a magenta toner and a cyan toner, wherein these toners have at least the binder resin, the colorant and the charge controlling agent having the molecular structure containing K+ as the counterion, when the K+ intensity detected by the fluorescent X ray on the surface of the black toner is Kk, the K+ intensity detected by the fluorescent X ray on the surface of the yellow toner is Ky, the K+ intensity detected by the fluorescent X ray on the surface of the magenta toner is Km and the K+ intensity detected by the fluorescent X ray on the surface of the cyan toner is Kc, the following formulae: Kk<Ky, Kk<Km and Kk<Kc are fulfilled is provided.
    Type: Grant
    Filed: December 26, 2006
    Date of Patent: November 16, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Takuya Kadota, Minoru Nakamura, Masayuki Hagi, Yoshihiro Mikuriya, Katsunori Kurose, Hideaki Yasunaga, Hiroaki Kato, Yoshimichi Ishikawa, Atsushi Yamamoto, Masahide Inoue
  • Patent number: 7820348
    Abstract: To provide a toner recovery apparatus including: a toner transporting duct; and an endless toner transporting belt; wherein the toner transporting belt is rotated in a loop form in such a way that it descends in a region where the outer circumferential surface faces a ceiling surface of the toner transporting duct and that it rises in a region where the outer circumferential surface of the toner transporting belt faces a bottom surface of the toner transporting duct, the toner recovery apparatus transports the residual toner to the outlet by holding the toner by the convex parts, spaces formed between convex parts and the bottom surface of the toner transporting duct, and the toner comprises a binding resin, releasing agent, coloring material and external additive, and torque T (mNm) measured by torque measurement method using a conical rotor in a space ratio of 50% to 60% is 1.0 to 2.5.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: October 26, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Masayuki Hagi, Yoshihiro Mikuriya, Yoshitaka Sekiguchi, Hideaki Yasunaga, Hiroaki Kato, Kazuoki Fuwa, Masahide Inoue, Yoshiyuki Shimizu
  • Patent number: 7817946
    Abstract: The present invention provides a developing device that allows for maintaining the conveyance amount of a toner within a certain definite range. A developing device 12 of the present invention is provided with a toner conveying unit 13 configured to convey a first toner and a controlling member 15 configured to control the thickness of a toner layer formed with the first toner conveyed by the toner conveying unit 13, wherein a second toner provided with a charged amount per unit mass that differs from a charged amount per unit mass of the first toner is applied over the surface of the controlling member 15.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: October 19, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroyuki Murakami, Masahide Inoue, Masayuki Hagi, Takuya Kadota, Yoshihiro Mikuriya, Katsunori Kurose, Hideaki Yasunaga, Hiroaki Kato, Yoshimichi Ishikawa, Kazuoki Fuwa
  • Patent number: 7749671
    Abstract: To provide a toner containing at least a toner base containing a binder resin and a colorant, and an inorganic fine particle, wherein the inorganic fine particle contains a compound oxide expressed by the following Composition Formula (1): [M1]aSibOc??Composition Formula (1) where “M1” represents a metal element selected from Sr, Mg, Zn, Co, Mn and Ce, “a” and “b” each represents an integer of 1 to 9 and “c” represents an integer of 3 to 9, wherein an average primary particle diameter of the compound oxide is 0.02 ?m to 1.5 ?m, and an average secondary particle diameter of the compound oxide is 0.08 ?m to 3.5 ?m, where the secondary particle is an aggregate of the primary particles.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: July 6, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Atsushi Yamamoto, Masahide Inoue, Chiyoshi Nozaki, Minoru Nakamura, Masayuki Hagi, Yoshihiro Mikuriya, Tsuyoshi Nozaki, Hiroaki Kato, Takuya Kadota, Katsunori Kurose, Hideaki Yasunaga, Yoshimichi Ishikawa
  • Publication number: 20100167196
    Abstract: To provide a toner recovery apparatus including: a toner transporting duct; and an endless toner transporting belt; wherein the toner transporting belt is rotated in a loop form in such a way that it descends in a region where the outer circumferential surface faces a ceiling surface of the toner transporting duct and that it rises in a region where the outer circumferential surface of the toner transporting belt faces a bottom surface of the toner transporting duct, the toner recovery apparatus transports the residual toner to the outlet by holding the toner by the convex parts, spaces formed between convex parts and the bottom surface of the toner transporting duct, and the toner comprises a binding resin, releasing agent, coloring material and external additive, and torque T (mNm) measured by torque measurement method using a conical rotor in a space ratio of 50% to 60% is 1.0 to 2.5.
    Type: Application
    Filed: March 12, 2010
    Publication date: July 1, 2010
    Inventors: Masayuki Hagi, Yoshihiro Mikuriya, Yoshitaka Sekiguchi, Hideaki Yasunaga, Hiroaki Kato, Kazuoki Fuwa, Masahide Inoue, Yoshiyuki Shimizu
  • Publication number: 20100161180
    Abstract: A motor-driven steering controller for controlling a steering wheel of a vehicle. The controller includes a steering torque controlling unit, a braking force estimating unit, a right and left braking force difference estimating unit and an assist steering torque providing unit. The steering torque controlling unit controls a steering torque on the steering wheel depending on a steering operation. The braking force estimating unit estimates braking forces to be imposed on wheels of the vehicle. The right and left braking force difference estimating unit estimates difference between the braking forces to be imposed on the right and left wheels each estimated by the braking forces estimating unit. The assist steering torque providing unit provides an assist steering torque for the steering torque controlling unit on the basis of the difference in braking force between right and left wheels estimated by the right and left braking force difference estimating unit.
    Type: Application
    Filed: March 5, 2010
    Publication date: June 24, 2010
    Applicants: AISIN SEIKI KABUSHIKI KAISHA, JTEKT CORPORATION, ADVICS CO., LTD.
    Inventors: Yoshiyuki Yasui, Wataru Tanaka, Yuji Muragishi, Eiichi Ono, Katsuhiro Asano, Minekazu Momiyama, Hiroaki Kato, Kenji Asano
  • Publication number: 20100147267
    Abstract: To provide a fuel injection system that can efficiently supply high pressure fuel to fuel injectors of an internal combustion engine, whose design and manufacture are made easy by simplifying its mechanical configuration, and which has excellent maintainability during repair and detachment.
    Type: Application
    Filed: January 19, 2007
    Publication date: June 17, 2010
    Inventors: Hiroaki Kato, Takao Iwasaki, Teruo Ohsawa, Hiroyuki Yano
  • Patent number: 7739001
    Abstract: A vehicle steering apparatus for improving steering feel when changing the angle of a steered wheel with a motor. An IFS torque compensation unit includes an oversteer IFS torque compensation gain calculation unit, which obtains a larger IFS torque compensation gain as a control target element increases during oversteer control. When an oversteer state occurs, the IFS torque compensation control unit outputs a corrected gain, which is based on the IFS torque compensation gain.
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: June 15, 2010
    Assignee: JTEKT Corporation
    Inventors: Hiroaki Kato, Shinji Takeuchi
  • Patent number: 7720428
    Abstract: To provide a toner recovery apparatus including: a toner transporting duct; and an endless toner transporting belt; wherein the toner transporting belt is rotated in a loop form in such a way that it descends in a region where the outer circumferential surface faces a ceiling surface of the toner transporting duct and that it rises in a region where the outer circumferential surface of the toner transporting belt faces a bottom surface of the toner transporting duct, the toner recovery apparatus transports the residual toner to the outlet by holding the toner by the convex parts, spaces formed between convex parts and the bottom surface of the toner transporting duct, and the toner comprises a binding resin, releasing agent, coloring material and external additive, and torque T (mNm) measured by torque measurement method using a conical rotor in a space ratio of 50% to 60% is 1.0 to 2.5.
    Type: Grant
    Filed: January 22, 2008
    Date of Patent: May 18, 2010
    Assignee: Ricoh Company, Ltd.
    Inventors: Masayuki Hagi, Yoshihiro Mikuriya, Yoshitaka Sekiguchi, Hideaki Yasunaga, Hiroaki Kato, Kazuoki Fuwa, Masahide Inoue, Yoshiyuki Shimizu
  • Patent number: 7699137
    Abstract: A motor-driven steering controller for controlling a steering wheel of a vehicle. The controller includes a steering torque controlling unit, a braking force estimating unit, a right and left braking force difference estimating unit and an assist steering torque providing unit. The steering torque controlling unit controls a steering torque on the steering wheel depending on a steering operation. The braking force estimating unit estimates braking forces to be imposed on wheels of the vehicle. The right and left braking force difference estimating unit estimates difference between the braking forces to be imposed on the right and left wheels each estimated by the braking forces estimating unit. The assist steering torque providing unit provides an assist steering torque for the steering torque controlling unit on the basis of the difference in braking force between right and left wheels estimated by the right and left braking force difference estimating unit.
    Type: Grant
    Filed: August 16, 2007
    Date of Patent: April 20, 2010
    Assignees: Aisin Seiki Kabushiki Kaisha, Jtekt Corporation, Advics Co., Ltd.
    Inventors: Yoshiyuki Yasui, Wataru Tanaka, Yuji Muragishi, Eiichi Ono, Katsuhiro Asano, Minekazu Momiyama, Hiroaki Kato, Kenji Asano
  • Publication number: 20100094497
    Abstract: In an electrical powered vehicle including a control device for generating an input/output power command value for a power storage device and a control device for controlling a power conversion device and a rotating electric machine, provided separately, when there is a sudden change in the rotational speed of a rotating electric machine, the input/output power command value of a power storage device intrinsically set by an HV-ECU is corrected corresponding to the change in the rotational speed of the rotating electric machine by a control device MG-ECU detecting the rotational speed of the rotating electric machine, without having to wait for modification of the input/output power command value from the HV-ECU.
    Type: Application
    Filed: October 5, 2009
    Publication date: April 15, 2010
    Applicant: Toyota Jidosha Kabushiki Kaisha
    Inventors: Hichirosai Oyobe, Makoto Nakamura, Masaya Yamamoto, Hideaki Saida, Satoru Katoh, Hiroaki Kato, Yoshinori Tomita, Haruki Sato
  • Publication number: 20100012287
    Abstract: To provide an apparatus for cast-product production line that can separate cast product and casting sand without ever using a jumbolized casting-mold disassembling device, and additionally that can intend the downsizing of mold-disassembling unit. An apparatus for cast-product production line has the following jointly: a kneader 94 for kneading casting sand for making mold; a mold maker 3 for making a sand casting mold 2 from the casting sand for making mold, the sand casting mold 2 being provided with a molding cavity 23 for forming a singular cast product or plural products 27; a molten-metal pourer 4 for pouring molten metal into said molding cavity 23 of the sand casting mold 2; and a mold disassembler 5 for disassembling the sand casting mold 2 having undergone molten-metal pouring. Upon disassembling the sand casting mold 2 by the mold disassembler 5, the sand casting mold 2 is disassembled in such a state that the cast product 27 is supported by means of a cast-product supporter element 52.
    Type: Application
    Filed: September 25, 2006
    Publication date: January 21, 2010
    Applicant: AISIN TAKAOKA CO., LTD.
    Inventors: Hiroaki Kato, Shinichi Tyomatsuken
  • Patent number: 7600762
    Abstract: A suspension control device includes a wheel grip state estimation device for estimating grip state of vehicle wheels based on variations of aligning torque of wheels to be steered, a vehicle rolling control device for controlling vehicle rolling, and a control parameter setting device for setting a control parameter of the vehicle rolling control device based on at least estimated grip state of the wheel grip state estimation device.
    Type: Grant
    Filed: September 23, 2004
    Date of Patent: October 13, 2009
    Assignees: Aisin Seiki Kabushiki Kaisha, Advices Co., Ltd., Jtekt Corporation
    Inventors: Yoshiyuki Yasui, Hiroaki Kato, Yuji Muragishi, Eiichi Ono, Hiroaki Aizawa
  • Patent number: 7587159
    Abstract: Provided is an image forming method that comprises a charging step, an exposing step, a developing step, an intermediate transfer step and a secondary transfer step, wherein the diameter R (mm) of a secondary transfer roller used in the secondary transfer step and the distance A (mm) between a nip center of the secondary transfer roller and a site where paper contacts with a secondary transfer belt at ingress side satisfy the following relation, and the charge amount Q (?C/g) of the toner going into the secondary transfer step satisfies the following relation. R/40<A<R/15 15/A2<Q<35/A2.
    Type: Grant
    Filed: September 14, 2007
    Date of Patent: September 8, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Kazuoki Fuwa, Masayuki Hagi, Yoshihiro Mikuriya, Hideaki Yasunaga, Hiroaki Kato, Yoshitaka Sekiguchi, Yoshie Iwakura
  • Patent number: 7556904
    Abstract: It is an object of the present invention to provide a toner containing toner particles and inorganic fine particles wherein the inorganic fine particles are externally added to the toner particles which contain a binder resin and a colorant and at least one type of the inorganic fine particles is a compound oxide having a relative permittivity measured at 1 MHz of 2 to 10 and a volume resistivity of 1011?·cm or more and an image forming method using the toner.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: July 7, 2009
    Assignee: Ricoh Company, Ltd.
    Inventors: Takuya Kadota, Masahide Inoue, Yoshihiro Mikuriya, Katsunori Kurose, Masayuki Hagi, Minoru Nakamura, Hiroaki Kato, Atsushi Yamamoto, Hideaki Yasunaga
  • Publication number: 20090169270
    Abstract: Provided is an image forming apparatus including at least a latent image bearing member, a latent electrostatic image forming unit, a developing unit which includes at least a developing roller and a supply roller, and a transfer unit, wherein both of a diameter R (mm) of the developing roller and a diameter R? (mm) of the supply roller are 12 mm or less; the toner contains at least a binder resin, a wax, and a colorant with the wax having a melting point of 75° C. or less; an amount of the wax exposed on a surface of the toner is 10 mg/g to 30 mg/g; and when a diameter (mm) of the developing roller is represented by R the toner has a torque T (mNm) satisfying the inequation, 20/R<T<27/R, at a void rate of 58% as measured by a torque measurement method using a conical rotor.
    Type: Application
    Filed: December 23, 2008
    Publication date: July 2, 2009
    Inventors: Kazuoki FUWA, Yoshihiro Mikuriya, Hideaki Yasunaga, Yoshitaka Sekiguchi, Hiroaki Kato