Patents by Inventor Kenji Kawahara

Kenji Kawahara 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: 11224976
    Abstract: An apparatus for loading/unloading workpieces, including a furnace heating a workpiece, and a robot loading and/or unloading a workpiece into/from the furnace. The robot may include a manipulator linkage and a fork at an end of the manipulator linkage. The fork may have an upper side on which a workpiece is placed while being loaded into and/or unloaded from the furnace. The fork may include a parallel arrangement of fork elements, each fork element in the fork having a length and rectangular cross section perpendicular to the length. Each fork element may have a workpiece carrying surface on which a workpiece is placed and an opposite surface to the workpiece carrying surface. The fork element may include a heat insulator disposed on the workpiece carrying surface at least over an area where a workpiece is placed to equalize longitudinal thermal expansions in the workpiece carrying surface and the opposite surface.
    Type: Grant
    Filed: October 14, 2016
    Date of Patent: January 18, 2022
    Assignee: TOYODA IRON WORKS CO., LTD.
    Inventors: Kenji Kushida, Nobuyuki Kawahara
  • Publication number: 20210155498
    Abstract: Provided are a method of producing high-purity molybdenum hexafluoride in good yield and a reaction apparatus therefor. The method of producing molybdenum hexafluoride, in a production apparatus for molybdenum hexafluoride including a fixed bed that is for mounting metallic molybdenum and that extends inside a reactor from an upstream side to a downstream side of the reactor, a fluorine (F2) gas inlet provided on the upstream side of the reactor, and a reaction product gas outlet provided on the downstream side of the reactor, comprises bringing metallic molybdenum into contact with fluorine (F2) gas, where the fixed bed for mounting metallic molybdenum is tilted.
    Type: Application
    Filed: March 29, 2019
    Publication date: May 27, 2021
    Applicant: Kanto Denka Kogyo Co., Ltd.
    Inventors: Yukinobu SHIBUSAWA, Hiroki TAKIZAWA, Kenji KAWAHARA, Daichi HANITANI
  • Patent number: 10647186
    Abstract: A second step of opening a closed openable/closable roof starts before a first step of opening a closed storage compartment cover finishes, so that a distance between portions of the storage compartment cover and the openable/closable roof facing each other is shorter at a point in time when the storage compartment cover is fully opened in the first step than at any other point in time. A fifth step of closing the open openable/closable roof starts before a fourth step of opening the closed storage compartment cover finishes, so that a distance between portions of the storage compartment cover and the openable/closable roof facing each other is shorter at a point in time when the storage compartment cover is fully opened in the fourth step than at any other point in time.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: May 12, 2020
    Assignee: WEBASTO JAPAN CO., LTD.
    Inventor: Kenji Kawahara
  • Publication number: 20190345603
    Abstract: The present invention is to provide: a method for producing a novel hexagonal boron nitride thin film suitable for industrial use such as application to electronics, in which a hexagonal boron nitride thin film having a large area, a uniform thickness of 1 nm or more, with few grain boundaries can be produced inexpensively; and a hexagonal boron nitride thin film. The hexagonal boron nitride thin film according to the present invention is characterized by having a thickness of 1 nm or more, and an average value of the full width at half maximum of the E2g peak obtained from Raman spectrum of 9 to 20 cm?1.
    Type: Application
    Filed: January 5, 2018
    Publication date: November 14, 2019
    Applicant: JAPAN SCIENCE AND TECHNOLOGY AGENCY
    Inventors: Hiroki AGO, Kenji KAWAHARA, Yuki UCHIDA, Sho NAKANDAKARI, Daichi TANAKA
  • Publication number: 20190070942
    Abstract: A second step of opening a closed openable/closable roof starts before a first step of opening a closed storage compartment cover finishes, so that a distance between portions of the storage compartment cover and the openable/closable roof facing each other is shorter at a point in time when the storage compartment cover is fully opened in the first step than at any other point in time. A fifth step of closing the open openable/closable roof starts before a fourth step of opening the closed storage compartment cover finishes, so that a distance between portions of the storage compartment cover and the openable/closable roof facing each other is shorter at a point in time when the storage compartment cover is fully opened in the fourth step than at any other point in time.
    Type: Application
    Filed: February 27, 2017
    Publication date: March 7, 2019
    Applicant: WEBASTO JAPAN CO., LTD.
    Inventor: Kenji KAWAHARA
  • Patent number: 9404437
    Abstract: On a vehicle equipped with a vacuum-assist type of brake booster utilizing the intake air pressure of the vehicle engine, an engine control apparatus automatically stops the engine under certain conditions and subsequently automatically restarts the engine if it is determined that the brake booster pressure has fallen below a predetermined value. The engine control apparatus also effects such automatic restarting if a predetermined maximum time interval has elapsed since the automatic engine stop occurred. This ensures that even when the booster pressure value cannot be reliably obtained after an automatic engine stop has occurred, the engine will be restarted before the booster pressure falls excessively.
    Type: Grant
    Filed: February 4, 2013
    Date of Patent: August 2, 2016
    Assignee: DENSO CORPORATION
    Inventors: Satoru Mizuno, Kenji Kawahara
  • Patent number: 8793060
    Abstract: A control apparatus controls an automatic stop of an engine mounted on a vehicle so as to automatically stop the engine if a predetermined stop condition is satisfied, the stop condition including a condition that a running speed of the vehicle is a prescribed speed or less. The control apparatus includes a prediction unit and a prohibition unit. The prediction unit predicts whether or not the next automatic stop time of the engine is less than a prescribed time capable of obtaining a fuel saving benefit based on a history of a vehicle stop time or an automatic stop time of the engine. The prohibition unit prohibits the next automatic stop of the engine if the prediction unit predicts that the next automatic stop time of the engine is less than the prescribed time.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: July 29, 2014
    Assignee: Denso Corporation
    Inventors: Takayuki Takeuchi, Kenji Kawahara, Hiroshi Morimoto, Takahiro Naito, Takanori Sasaki
  • Patent number: 8655471
    Abstract: This impurity amount control system for manufacturing a single crystal has a resistivity profile memory which stores a resistivity profile for a portion of a single crystal that is rendered into wafers; a simulator which determines a resistivity profile formula for indicating a resistivity profile within a reusable ingot that is the reusable material in the single crystal from an impurity concentration estimating formula including one or more variables selected from among resistivities at both ends of the reusable ingot in the crystal growth axis direction, the impurity concentration when crystal pulling begins, a segregation coefficient, a solidification ratio and a correction coefficient, and from the resistivity profile; and an impurity amount calculator which calculates, based on the resistivity profile formula, the amount of impurity within the reusable ingot.
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: February 18, 2014
    Assignee: Sumco Corporation
    Inventor: Kenji Kawahara
  • Patent number: 8579764
    Abstract: A control apparatus for an idle-stop system mounted on a manual-transmission-vehicle includes a restart unit performing a restart operation of the engine such that the restart unit drives a starter to restart the engine when a predetermined restart condition is met. The restart condition includes a condition where a clutch member is operated to allow the motive force to be transmitted between the output shaft of the engine and the driving wheel of the vehicle while the motive force has been blocked by the clutch, and a condition where the brake member is operated to stop applying the braking force to the wheel while the motive force has been blocked by the clutch. A forced stopping means is adapted to stop the wheels by forcibly applying the braking force to the wheels by operating a brake actuator during a predetermined period since the restart condition is met.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: November 12, 2013
    Assignee: Denso Corporation
    Inventors: Tetsuo Morita, Kenji Kawahara
  • Patent number: 8577575
    Abstract: A control apparatus for a vehicle, where the vehicle includes control means for stopping an engine automatically when a stopping condition is met, and restarting the engine after the automatic stoppage of the engine, when a predetermined restarting condition is met, a braking device that is actuated to apply braking force to a drive wheel, and a plurality of vehicle-mounted devices involved in operations of the vehicle. The apparatus includes abnormality detection means for determining whether or not there exists an abnormality in at least one of the vehicle-mounted devices, and fail-safe means for, when during the automatic stoppage of the engine it is determined by the abnormality detection means that there exists an abnormality in at least one of the vehicle-mounted devices, restarting the engine forcibly. The apparatus enables the user to take suitable measures in the presence of an abnormality in the vehicle-mounted devices.
    Type: Grant
    Filed: December 12, 2011
    Date of Patent: November 5, 2013
    Assignee: Denso Corporation
    Inventors: Masayuki Tomura, Kenji Kawahara
  • Patent number: 8302575
    Abstract: In a system installed in a vehicle, an automatic stop of an engine is carried out when an engine automatic stop condition is met during the vehicle being decelerated. The automatically stopped engine is restarted when an engine restart condition is met before the vehicle is stopped. A vehicle speed obtaining unit obtains a vehicle speed, and a threshold determining unit determines a threshold based on a predetermined-timing value of the vehicle speed. The predetermined-timing value is obtained at a predetermined timing when or after the engine restart condition is met. The threshold is used to determine whether to enable a next automatic stop of the engine. A stop enabling unit enables the next automatic stop of the engine when the speed of the vehicle obtained after the engine restart condition is met is equal to or higher than the threshold.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: November 6, 2012
    Assignee: Denso Corporation
    Inventors: Takashi Senda, Kenji Kawahara
  • Patent number: 8296041
    Abstract: A vehicle control apparatus is provided which is operative in an automatic engine stop mode to stop an engine automatically and in an engine restart mode to restart the engine automatically after the engine is stopped in the automatic engine stop mode so as to output a predetermined reference engine torque immediately after the engine is started. The vehicle control apparatus works to determine the travel performance of the vehicle required immediately after the engine has been restarted in the engine restart mode and control the torque outputted by the engine based on the determined travel performance so as to ensure the drivability of the vehicle after the engine is restarted automatically.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: October 23, 2012
    Assignee: Denso Corporation
    Inventors: Masanori Yamamura, Kenji Kawahara
  • Patent number: 8280608
    Abstract: A system is installed in a vehicle having an internal combustion engine, a transmission, and a clutch. The system restarts, according to at least one engine restart condition is met, the internal combustion engine that has been automatically controlled for stop thereof. The system includes a restart-condition determiner configured to determine that, as the at least one engine restart condition, an operation of the clutch is started by a driver of the vehicle for shifting the second state to the first state. The system includes a state detector configured to detect an operated state of the clutch during the clutch is shifted from a disengagement state to an engagement state. The system includes a restart controller configured to determine whether to enable or disable the restart of the internal combustion engine according to the operated state of the clutch detected by the state detector.
    Type: Grant
    Filed: March 1, 2010
    Date of Patent: October 2, 2012
    Assignee: Denso Corporation
    Inventors: Takashi Senda, Kenji Kawahara, Akira Kato, Masayuki Tomura, Masanori Yamamura
  • Patent number: 8246517
    Abstract: A controller stops a fuel injection when a vehicle is in a specified decelerate condition where the vehicle likely stops and an automatic stop requirement is generated. An input shaft and an output shaft of a shift transmission mechanism are directly connected with each other through a direct connector so that a driving power is transmitted from an engine to a driving shaft through a power transmitter which permits a sliding between an input shaft and an output shaft thereof. When a restart requirement is generated before the vehicle is completely stopped, the engine is restarted under a condition where the input shaft and the output shaft of the shift transmission mechanism are connected with each other by a direct connector. When the restart requirement is not generated before the vehicle is completely stopped, the input shaft and the output shaft are disconnected when the vehicle is completely stopped.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: August 21, 2012
    Assignee: Denso Corporation
    Inventors: Takashi Senda, Akira Katoh, Kenji Kawahara
  • Publication number: 20120150406
    Abstract: A control apparatus for a vehicle, where the vehicle includes control means for stopping an engine automatically when a stopping condition is met, and restarting the engine after the automatic stoppage of the engine, when a predetermined restarting condition is met, a braking device that is actuated to apply braking force to a drive wheel, and a plurality of vehicle-mounted devices involved in operations of the vehicle. The apparatus includes abnormality detection means for determining whether or not there exists an abnormality in at least one of the vehicle-mounted devices, and fail-safe means for, when during the automatic stoppage of the engine it is determined by the abnormality detection means that there exists an abnormality in at least one of the vehicle-mounted devices, restarting the engine forcibly. The apparatus enables the user to take suitable measures in the presence of an abnormality in the vehicle-mounted devices.
    Type: Application
    Filed: December 12, 2011
    Publication date: June 14, 2012
    Applicant: DENSO CORPORATION
    Inventors: Masayuki Tomura, Kenji Kawahara
  • Publication number: 20120136553
    Abstract: A control apparatus controls an automatic stop of an engine mounted on a vehicle so as to automatically stop the engine if a predetermined stop condition is satisfied, the stop condition including a condition that a running speed of the vehicle is a prescribed speed or less. The control apparatus includes a prediction unit and a prohibition unit. The prediction unit predicts whether or not the next automatic stop time of the engine is less than a prescribed time capable of obtaining a fuel saving benefit based on a history of a vehicle stop time or an automatic stop time of the engine. The prohibition unit prohibits the next automatic stop of the engine if the prediction unit predicts that the next automatic stop time of the engine is less than the prescribed time.
    Type: Application
    Filed: November 30, 2011
    Publication date: May 31, 2012
    Applicant: DENSO CORPORATION
    Inventors: Takayuki TAKEUCHI, Kenji KAWAHARA, Hiroshi MORIMOTO, Takahiro NAITO, Takanori SASAKI
  • Publication number: 20120083389
    Abstract: A control apparatus for an idle-stop system mounted on a manual-transmission-vehicle includes a restart unit performing a restart operation of the engine such that the restart unit drives a starter to restart the engine when a predetermined restart condition is met. The restart condition includes a condition where a clutch member is operated to allow the motive force to be transmitted between the output shaft of the engine and the driving wheel of the vehicle while the motive force has been blocked by the clutch, and a condition where the brake member is operated to stop applying the braking force to the wheel while the motive force has been blocked by the clutch.
    Type: Application
    Filed: September 22, 2011
    Publication date: April 5, 2012
    Applicant: DENSO CORPORATION
    Inventors: Tetsuo MORITA, Kenji KAWAHARA
  • Patent number: 8131452
    Abstract: In a system, an angle sensor outputs a pulse each time an output shaft of an internal combustion engine rotates by a preset angle, and a calculator calculates speed-change information indicative of a change in a speed of rotation of the output shaft based on the pulses outputted from the angle sensor. A determiner determines, based on the speed-change information, whether at least one of the pulses outputted from the angle sensor represents a proper timing for a preset of a pinion of a starter with a ring gear mounted on the output shaft. A pinion engaging unit shifts the pinion toward the ring gear so that the pinion is engaged with the ring gear when it is determined that the at least one of the pulses outputted from the angle sensor represents the proper timing for the preset of the pinion with the ring gear.
    Type: Grant
    Filed: January 21, 2010
    Date of Patent: March 6, 2012
    Assignee: Denso Corporation
    Inventors: Takashi Senda, Akira Kato, Mitsuhiro Murata, Masami Niimi, Kenji Kawahara, Hideya Notani
  • Patent number: 7904221
    Abstract: A vehicle has a drive control ECU that controls an internal combustion engine or a transmission on the basis of a target drive force. The drive control ECU has a first arbitrator that sets the target drive force on the basis of a driver's request and the like, and filters that have individually different damping characteristics and that correct the target drive force from the first arbitrator so that the vibration of a sprung weight of the vehicle is controlled, as well as a switch that includes a switching portion and a filter setting portion. The filter setting portion determines whether a pitching resonance frequency has changed. If having determined that the pitching resonance frequency has changed, the filter setting portion switches the filter having been used for correcting the target drive force to a filter corresponding to a post-change pitching resonance frequency.
    Type: Grant
    Filed: June 8, 2006
    Date of Patent: March 8, 2011
    Assignees: Toyota Jidosha Kabushiki Kaisha, Denso Corporation
    Inventors: Yoshitaka Oikawa, Hideki Takamatsu, Shoji Inagaki, Kenji Kawahara, Yasuhiro Nakai
  • Patent number: 7853387
    Abstract: A controller controls braking force and driving force of a vehicle, in accordance with demand force. The controller includes a first and second demand force arithmetic units for arithmetically calculating first and second demand force. The first demand force includes a factor inducing vibration in suspended components of the vehicle. The second demand force substantially excludes the factor inducing vibration in suspended components of the vehicle. A vibration damping filter reduces the factor from a waveform of the first demand force, thereby producing post-filter demand force. An arbitration unit compares the post-filter demand force with the second demand force, thereby selecting one of the post-filter demand force and second demand force as final demand force.
    Type: Grant
    Filed: March 30, 2006
    Date of Patent: December 14, 2010
    Assignees: Denso Corporation, Toyota Jidosha Kabushiki Kaisha
    Inventors: Yasuhiro Nakai, Kenji Kawahara, Shoji Inagaki, Hideki Takamatsu