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: 7257474
    Abstract: In a steering system 30, a transmission ratio R1 which is determined in dependence on the vehicle speed by reference to a transmission ratio decision map is multiplied with a first transmission ratio alteration gain g10 which is determined in dependence on the distribution of a traveling drive torque from an engine 11 to front wheels 14 and rear wheels 15, thereby to alter the ratio R1 of steering torque distribution from a steering handle 31 to the front wheels 14, whereby the variation of the steering feeling due to an increase or decrease in the distribution of the traveling drive torque to the front wheels 14 can be suppressed. Further, the transmission ratio R1 is multiplied with a second transmission ratio alteration gain g11 which is determined in dependence on the gradient of the road surface by reference to a second transmission ratio alteration map, thereby to alter the transmission ratio R1, whereby the variation of the steering feeling due to the variation of the gradient can also be suppressed.
    Type: Grant
    Filed: April 4, 2005
    Date of Patent: August 14, 2007
    Assignee: JTEKT Corporation
    Inventors: Hiroaki Kato, Shinji Takeuchi, Minekazu Momiyama, Akihiro Ohno, Tsuyoshi Murakami
  • Publication number: 20070177999
    Abstract: An electric pump for supplying a hydrogen gas to a fuel cell includes a rotary shaft rotatably inserted through an electric motor, a transmitting member provided on one of an outer peripheral surface of the rotary shaft and an inner peripheral surface of the electric motor so as to be rotatable therewith, and a groove formed in the other of the outer peripheral surface of the rotary shaft and the inner peripheral surface of the electric motor for the transmitting member to be inserted therein. The groove transmits a rotary torque of the electric motor to the rotary shaft by contacting an inner surface of the groove and the transmitting member and has an opening width along a rotary direction of the rotary shaft which is larger than the width of the transmitting member. The groove and the transmitting member produce an impact torque when the electric pump is started.
    Type: Application
    Filed: January 18, 2007
    Publication date: August 2, 2007
    Inventors: Toshiro Fujii, Fumihiro Suzuki, Yoshiyuki Nakane, Masanao Kagami, Katsutoshi Shiromaru, Hiroaki Kato
  • Publication number: 20070148568
    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: Application
    Filed: December 26, 2006
    Publication date: June 28, 2007
    Inventors: Takuya Kadota, Minoru Nakamura, Masayuki Hagi, Yoshihiro Mikuriya, Katsunori Kurose, Hideaki Yasunaga, Hiroaki Kato, Yoshimichi Ishikawa, Atsushi Yamamoto, Masahide Inoue
  • Patent number: 7212903
    Abstract: A vehicle motion control apparatus is provided with an anti-skid control device and a steering angle adjusting device, which adjusts the steering angle of at least one of the front and rear wheels to cancel a yaw deviation between a desired yaw factor and an actual yaw factor, to be substantially zero. An incompatibility between the devices is determined on the basis of a state of the wheel adjusted by the steering angle adjusting device to cancel the yaw deviation. And, a predetermined parameter provided between a vehicle stability directive parameter and a brake directive parameter is set on the basis of the incompatibility. Then, the anti-skid control device controls the braking force applied to each wheel of the vehicle on the basis of the predetermined parameter. Consequently, the anti-skid control giving importance to the braking force can be performed, as long as the steering angle adjusting device is operative.
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: May 1, 2007
    Assignees: Advics Co., Ltd., Toyoda Koki Kabushiki Kaisha
    Inventors: Hiroaki Niino, Hiroaki Aizawa, Minekazu Momiyama, Hiroaki Kato
  • Patent number: 7202593
    Abstract: A steel sheet for an inner magnetic shield has a ratio of the anhysteretic magnetic permeability in the rolling direction to the anhysteretic magnetic permeability in the transversal direction, which is not higher than 0.7 or not lower than 1.4, preferably not higher than 0.5 or not lower than 2.0. A higher value of the two anhysteretic magnetic permeability values in the rolling direction and in the transversal direction is not lower than 18000. The inner magnetic shield formed of the particular steel sheet has a substantially truncated pyramid body which has a pair of short side members of a screen and a pair of long side members of a screen. The short side members are joined to the long side members at edge portions of the truncated pyramidal inner magnetic shield. The direction, in which the anhysteretic magnetic permeability of the steel sheet is the higher value, corresponds to the horizontal plane direction of the short side member.
    Type: Grant
    Filed: February 18, 2003
    Date of Patent: April 10, 2007
    Assignee: JFE Steel Corporation
    Inventors: Hideki Matsuoka, Reiko Sugihara, Kenji Tahara, Noriko Kubo, Keisuke Fukumizu, Teruo Takeuchi, Hiroaki Kato
  • Publication number: 20070059625
    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: Application
    Filed: September 15, 2006
    Publication date: March 15, 2007
    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
  • Patent number: 7191048
    Abstract: A vehicle motion control apparatus is provided for performing a vehicle stability control on the basis of a parameter indicative of lateral margin for a tire on a road. The apparatus includes a steering control device for controlling a relationship between a steering angle and a tire angle to be varied, and a decelerating control device for controlling a vehicle speed to be decreased. The parameter indicative of lateral margin for the tire is monitored, and the steering control device and the decelerating control device are controlled on the basis of the monitored parameter.
    Type: Grant
    Filed: August 26, 2004
    Date of Patent: March 13, 2007
    Assignees: Advics Co., Ltd., Toyoda Koki Kabushiki Kaisha
    Inventors: Hiroaki Aizawa, Hiroaki Niino, Minekazu Momiyama, Hiroaki Kato, Eiichi Ono, Yuji Muragishi, Yoshiyuki Yasui
  • Publication number: 20070047564
    Abstract: A communication apparatus includes a plurality of first queues to which priorities or predetermined bandwidths are assigned respectively, a plurality of second queues which are corresponded to any of the plurality of first queues and to which the priorities are assigned respectively, a first writing portion which writes data blocks into any of the plurality of second queues or any of the plurality of first queues which is not corresponded to the second queues in accordance with a rule, a second writing portion which reads the data blocks stored in the plurality of second queues in order of the priorities assigned to the second queues respectively, and writes the data blocks into at least one of the first queues which is corresponded to the second queues, and a transmitting portion which reads the data blocks stored in the plurality of first queues in order of the priorities assigned to the first queues respectively or at time intervals corresponding to the bandwidths assigned to the first queues respectively,
    Type: Application
    Filed: August 15, 2006
    Publication date: March 1, 2007
    Applicant: Yamaha Corporation
    Inventor: Hiroaki Kato
  • Patent number: 7171296
    Abstract: An electronic control unit calculates a target yaw rate in accordance with a vehicle speed and a steering angle and calculates the yaw rate difference on the basis of the target yaw rate and an actual yaw rate. The electronic control unit estimates the grip factor of a front wheel to road surface and sets a distribution ratio for distribution of a vehicle-control target value among actuators of a steering system, a brake system, and a drive system in accordance with the estimated grip factor. The electronic control unit controls the actuators of the three systems in accordance with control instruction values distributed on the basis of the vehicle-control target value and the distribution ratio.
    Type: Grant
    Filed: October 1, 2004
    Date of Patent: January 30, 2007
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Hiroaki Kato, Minekazu Momiyama, Takayuki Ohta, Akira Kodama
  • Patent number: 7163592
    Abstract: A steel sheet for a tension mask excellent in the shielding properties from geomagnetism consists essentially of lower than 0.1% by weight of C, lower than 0.2% by weight of Si, 0.4 to 2% by weight of Mn, not higher than 0.1% by weight of P, not higher than 0.03% by weight of S, not higher than 0.01% by weight of sol. Al, 0.003 to 0.02% by weight of N and the balance of Fe, and has an anhysteretic magnetic permeability of 5,000 or higher.
    Type: Grant
    Filed: July 2, 2003
    Date of Patent: January 16, 2007
    Assignee: JFE Steel Corporation
    Inventors: Hideki Matsuoka, Yasushi Tanaka, Reiko Sugihara, Tatsuhiko Hiratani, Kenichiro Takayanagi, Masamichi Okada, Hiroaki Kato
  • Patent number: 7164974
    Abstract: In vehicle roll sensing of the present invention, a self-aligning torque (SAT) estimator estimates a composite value of SATs generated on tire contact patch of right and left wheels. A slip angle computer detects a vehicle speed and a steering angle and computes a slip angle of the wheel from the measured vehicle speed and steering angle. An SAT model value computer estimates an SAT model value as a composite value of SATs of the right and left wheels when no load shifts between the right and left wheels on the basis of the slip angle. A load shift ratio estimator estimates a load shift state of the right and left wheels on the basis of the composite value of the SATs of the wheels and the SAT model value. A vehicle rollover estimator estimates a rollover of the vehicle on the basis of the estimated load-shift state.
    Type: Grant
    Filed: July 21, 2004
    Date of Patent: January 16, 2007
    Assignees: Advics Co., Ltd., Toyoda Koki Kabushiki Kaisha
    Inventors: Eiichi Ono, Yuji Muragishi, Hiroaki Aizawa, Hiroaki Niino, Yoshiyuki Yasui, Minekazu Momiyama, Hiroaki Kato
  • Publication number: 20060275686
    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: Application
    Filed: April 26, 2006
    Publication date: December 7, 2006
    Inventors: Takuya Kadota, Masahide Inoue, Yoshihiro Mikuriya, Katsunori Kurose, Masayuki Hagi, Minoru Nakamura, Hiroaki Kato, Atsushi Yamamoto, Hideaki Yasunaga
  • Patent number: 7115308
    Abstract: A glass panel comprising a pair of glass sheets (1, 2) disposed with respective faces thereof confronting each other in face-to-face relationship with a gap (V) therebetween and with peripheral edges of the glass sheets (1, 2) being bonded with a bonding sealant (4) to be sealed thereby; an evacuating port (5) for evacuating gas present within said gap (V) to the outside; and a getter (7) for coming into contact with the gas within said gap (V), wherein said evacuating port (5) includes a getter-retaining space (6) for retaining said getter (7) therein, said port (5) being formed in one (1) of said pair of glass sheets (1, 2), said getter (7) being retained within said getter-retaining space (6), said evacuating port (5) being closed and sealed by means of a lid (8).
    Type: Grant
    Filed: October 3, 2002
    Date of Patent: October 3, 2006
    Assignees: Nippon Sheet Glass Co., Ltd., The University of Sydney
    Inventors: Takeshi Amari, Hideo Yoshizawa, Hiroaki Kato, Richard Edward Collins, Nelson Ng
  • Publication number: 20060159970
    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: Application
    Filed: December 6, 2005
    Publication date: July 20, 2006
    Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Hiroaki Kato, Kazumasa Takada
  • Patent number: 7073644
    Abstract: In order to control an internal pressure of an air spring appropriately without being influenced by a change in supply pressure, an anti-vibration system includes an air spring as an actuator for an anti-vibration table, a pressure control valve for controlling the internal pressure of the air spring, a pressure sensor for detecting the air supply pressure to the pressure control valve, a driving system for actuating the pressure control valve in accordance with a detection signal of the pressure sensor, and a variable gain compensation system for performing variable gain compensation to an input signal to the driving system for the pressure control valve, on the basis of the detection signal of the pressure sensor.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: July 11, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventor: Hiroaki Kato
  • Publication number: 20060144091
    Abstract: There are provided a glass melting apparatus and a glass melting method which are capable of uniformly melting glass materials and shortening or dispensing with a fining process. The glass melting apparatus 200 is comprised of an oscillator 201 having a gyrotron 202 disposed therein for emitting high-frequency waves of 28 GHz, a circular waveguide 203 for transmitting the millimeter waves from the oscillator 201, an applicator 204 having a ceramic furnace 111 disposed therein, and a CPU 205 controlling a thermocouple 206 for measuring the temperature of molten glass within the furnace 111 and a power supply panel 207 for supplying electric power to the oscillator 201. The furnace 111 has an upper part thereof formed with a batch inlet port 112 through which a mixture of glass materials (hereinafter referred to as “the batch”) is charged, and a lower part thereof formed with an outlet end 113 through which the batch melted uniformly by dielectric heating within the furnace 111 is dropped into a bus 121.
    Type: Application
    Filed: February 28, 2006
    Publication date: July 6, 2006
    Inventors: Hiroaki Kato, Eiichi Nakaoka
  • Patent number: 7070109
    Abstract: An optical reader which is compatible with every environment irrespective of installation and usage environments, thereby enabling uniform manufacturing, satisfactory reading reliance, and operative safety and user-friendliness. The optical unit is mounted on the stage, and there is provided an inclination apparatus which inclines the stage at a desired angle. Thereby, without changing a preset optimal scanning pattern, only its emitting direction becomes changeable freely.
    Type: Grant
    Filed: February 26, 2003
    Date of Patent: July 4, 2006
    Assignee: Fujitsu Limited
    Inventors: Hiroaki Kato, Mitsuharu Ishii, Toshitaka Aoki
  • Patent number: 7072777
    Abstract: An exposure apparatus includes a motion control system, the motion control system including a structure, a plurality of actuators to apply forces to the structure, respectively, and a plurality of sensors to sense motion states of the structure, respectively. The apparatus includes a pseudo-random signal generator to generate a plurality of pseudo-random signals and to apply the plurality of pseudo-random signals to the plurality of actuators, the plurality of pseudo-random signals being equal in number to a number of degrees of freedom of the motion control system, a storage unit to store a first plurality of time-series data obtained by the plurality of sensors with a second plurality of time-series data corresponding to the plurality of pseudo-random signals, and a characteristic deriving unit to derive a characteristic of the motion control system based on the first and second plurality of time-series data.
    Type: Grant
    Filed: June 15, 1999
    Date of Patent: July 4, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shinji Wakui, Takehiko Mayama, Shuichi Adachi, Hiroaki Kato
  • Patent number: 7066295
    Abstract: When a variable value indicates that a steering characteristic is understeer, a control unit controls a variable transmission ratio device to change a second steering angle such that the greater the understeer indicated by the variable value, the smaller the steering angle of steered wheels relative to the turning angle of a steering wheel becomes. When the differentiated value of the variable value indicates that the understeer is changing to increase, a correction unit corrects the variable value such that the greater the degree of change of the understeer indicated by the differentiated value, the greater the understeer indicated by the variable value becomes. Hence, the attitude of a vehicle in understeer is stabilized with a simple configuration.
    Type: Grant
    Filed: May 31, 2005
    Date of Patent: June 27, 2006
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Takayuki Ohta, Minekazu Momiyama, Hiroaki Kato
  • Patent number: 7055645
    Abstract: In accordance with a vehicle motion control apparatus, a steering angle (?h) of a steering wheel is determined on the basis of a rotation angle (?pm) of an assist motor (24m) detected by a rotation angle sensor (24s) and a rotation angle (?vm) of a gear ratio variable motor (32m) detected by a rotation angle sensor (32s), and a VGRS control process (40a) of a gear ratio variable mechanism is executed on the basis of the determined steering angle (?h). Accordingly, since the steering angle (?h) of the steering wheel is determined on the basis of the rotation angle (?vm) used for the VGRS control process (40a) of the gear ratio variable mechanism and the rotation angle (?pm) used for an EPS control process (30a) of an EPS actuator, it is possible to obtain the steering angle (?h) of the steering wheel without a steering angle sensor. Therefore, it is possible to reduce the number of the parts of a vehicle motion control apparatus.
    Type: Grant
    Filed: April 21, 2003
    Date of Patent: June 6, 2006
    Assignee: Toyoda Koki Kabushiki Kaisha
    Inventors: Hiroaki Kato, Minekazu Momiyama, Yoshiyuki Yasui, Wataru Tanaka, Kenji Asano, Yuzou Imoto, Eiichi Ono, Yuji Muragishi