Patents by Inventor Takashi Kawai

Takashi Kawai 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: 11223239
    Abstract: A contactless power supply system includes a contactless power supply device and a power receiving device. Power is supplied from the contactless power supply device to the power receiving device while communication is performed therebetween. The power receiving device includes a power receiving coil unit, and a first communication unit that communicates with the contactless power supply device and attaches information having continuity to data transmitted to the contactless power supply device. The contactless power supply device includes a power supply coil unit, a second communication unit, and a power supply control unit that, when the second communication unit begins to receive data transmitted from the first communication unit, refers to the information having continuity attached to the continuously received data, and if continuity has been lost, performs correction to increase the output value of the power supplied from the power supply coil unit to the power receiving coil unit.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: January 11, 2022
    Assignee: OMRON CORPORATION
    Inventors: Takashi Miura, Toshiyasu Miwata, Yusuke Kawai, Masashi Sato
  • Patent number: 11221040
    Abstract: A difference between a maximum value and a minimum value of arithmetic mean roughness Ra of an annular surface region in contact with a larger flange surface, in a larger end face of the tapered roller, is not greater than 0.02 ?m. A value of a ratio R/RBASE is not smaller than 0.75 and not greater than 0.87 where R represents a set radius of curvature of the larger end face of the tapered roller and RBASE represents a distance from a point which is an apex of a cone angle of the tapered roller to the larger flange surface of the inner ring. A ratio Rprocess/R is not lower than 0.5 where Rprocess represents an actual radius of curvature after grinding of the larger end face of the tapered roller and R represents a set radius of curvature.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: January 11, 2022
    Assignee: NTN CORPORATION
    Inventors: Takanori Ishikawa, Takashi Kawai, Tomoki Matsushita, Nozomi Isobe
  • Patent number: 11223243
    Abstract: A contactless power supply system includes a contactless power supply device and a power receiving device. Power is supplied from the contactless power supply device to the power receiving device while communication is performed therebetween. The power receiving device includes a power receiving coil unit, and a first communication unit that attaches information having continuity to data transmitted to the contactless power supply device. The contactless power supply device includes a power supply coil unit, a second communication unit, and a power supply control unit that, in a steady state where communication is performed between two communication units after the second communication unit begins receiving the data transmitted from the first communication unit, refers to information having continuity attached to the data, and if continuity has been lost, performs correction to increase the output value of the power from the power supply coil unit to the power receiving coil unit.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: January 11, 2022
    Assignee: OMRON CORPORATION
    Inventors: Takashi Miura, Toshiyasu Miwata, Yusuke Kawai, Masashi Sato
  • Publication number: 20210396579
    Abstract: A spectroscopic sensor includes a wiring substrate having a main surface, a light detector disposed on the main surface of the wiring substrate, a Fabry-Perot interference filter, a spacer which is provided on the main surface of the wiring substrate and supports the Fabry-Perot interference filter so that the Fabry-Perot interference filter and the light detector are separated from each other, and a stein connected to a ground potential. A second current path which has a smaller electric resistance than that of an arbitrary first current path which extends from the Fabry-Perot interference filter to the light detector via the spacer and the wiring substrate is formed between the Fabry-Perot interference filter and the stein.
    Type: Application
    Filed: August 23, 2019
    Publication date: December 23, 2021
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Hiroki OYAMA, Katsumi SHIBAYAMA, Takashi KASAHARA, Masaki HIROSE, Toshimitsu KAWAI, Yumi KURAMOTO
  • Patent number: 11143235
    Abstract: Two projecting portions (45a and 45b) configured to guide a tapered roller (3) on distal end surfaces thereof are formed on a side surface (43a) of a pillar portion (43) of a retainer (4) so as to be separated apart from each other in a roller axis direction. The projecting portions (45a and 45b) are separated apart from each other in the roller axis direction with respect to both a small-diameter-side annular portion (41) and a large-diameter-side annular portion (42). The projecting portions (45a and 45b) each have a force-fit margin (F).
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: October 12, 2021
    Assignee: NTN CORPORATION
    Inventors: Takashi Kawai, Tomoki Matsushita
  • Publication number: 20210281763
    Abstract: An image processing apparatus: obtains a captured image captured by the image capturing apparatus after an orientation adjustment is performed by using a first target image generated based on a three-dimensional model of a structure in an image capturing region; determines a correction amount for correcting a difference between an orientation of the image capturing apparatus and a target orientation based on the first target image and the obtained captured image; and corrects the captured image by using the correction amount. The corrected captured image can be used as a second target image for further adjusting the posture of the imaging device.
    Type: Application
    Filed: February 5, 2021
    Publication date: September 9, 2021
    Inventor: Takashi Kawai
  • Publication number: 20210231169
    Abstract: A tapered roller bearing includes an inner ring having a tapered raceway surface and a large-collar surface on a large-diameter side of the raceway surface, and tapered rollers. Each of the rollers has a large end surface guided by the large-collar surface. When R represents a set curvature radius of the large end surface and RBASE represents a base curvature radius from a vertex of a cone angle of each of the tapered rollers to the large-collar surface, the base curvature radius RBASE is 100 mm or less, and a ratio R/RBASE of the set curvature radius R to the base curvature radius RBASE is set to 0.90 or less. When RACTUAL represents an actual curvature radius of the large end surface of each of the tapered rollers, a ratio RACTUAL/R of the actual curvature radius RACTUAL to the set curvature radius R exceeds 0.5.
    Type: Application
    Filed: August 16, 2019
    Publication date: July 29, 2021
    Inventor: Takashi KAWAI
  • Patent number: 10968947
    Abstract: A tapered roller bearing includes an inner ring having a large flange surface, and tapered rollers having roller large end surfaces. The large flange surface has an arithmetic mean roughness Ra of 0.1 ?m?Ra?0.2 ?m. The large flange surface further has a roughness curve skewness Rsk of ?1.0?Rsk??0.3, and a roughness curve kurtosis Rku of 3.0?Rsk?5.0. The tapered roller bearing is capable of realizing both stable rotation torque while the bearing is rotating at a low speed, and excellent resistance.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: April 6, 2021
    Assignee: NTN Corporation
    Inventors: Takashi Kawai, Masaya Takaoka
  • Patent number: 10951873
    Abstract: An information processing apparatus includes an obtaining unit configured to obtain viewpoint information indicating at least a position of a virtual viewpoint corresponding to a virtual viewpoint image that is generated based on a plurality of images obtained by a plurality of image capturing apparatuses each capturing an image of an imaging target area in a different direction, and an output unit configured to output a value of the virtual viewpoint image corresponding to the position of the virtual viewpoint indicated by the viewpoint information obtained by the obtaining unit, wherein the value is determined based on the viewpoint information.
    Type: Grant
    Filed: August 5, 2019
    Date of Patent: March 16, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takashi Kawai
  • Publication number: 20210062742
    Abstract: A powertrain system includes a port injection internal combustion engine. A first start process is a process in which fuel is enclosed in a compression stroke cylinder when the engine is stopped, and based on a stored crank stop position, ignition is performed in a first cycle of the compression stroke cylinder upon engine start. A second start process is a process in which, based on the stored crank stop position, fuel injection is performed for an intake stroke cylinder while the engine is stopped, and based on the stored crank stop position, ignition is performed in the first cycle of the intake stroke cylinder upon engine start. When a catalyst temperature at the time engine start is requested is equal to or higher than a first threshold, a control device starts the internal combustion engine by at least one of the first start process and the second start process.
    Type: Application
    Filed: July 1, 2020
    Publication date: March 4, 2021
    Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shintaro HOTTA, Takashi KAWAI, Shunsuke FUSHIKI, Hideto WAKABAYASHI, Hirokazu ITO
  • Publication number: 20210063185
    Abstract: A guide object for proposing a guide target point is displayed when there is a guide target point that is to be proposed, ahead of a vehicle in a traveling direction. In contrast, when displaying the guide object, the guide object is displayed in a form in which an occupant visually recognizes the guide object with a relative position of the guide object with respect to the vehicle fixed, when a distance from the vehicle to the guide target point is equal to or more than a threshold. Further, the guide object is displayed in a form in which the occupant visually recognizes the guide object as being superimposed with a relative position of the guide object with respect to the guide target point fixed, when the distance from the vehicle to the guide target point is less than the threshold.
    Type: Application
    Filed: August 14, 2020
    Publication date: March 4, 2021
    Applicant: AISIN AW CO., LTD.
    Inventors: Takashi KAWAI, Toshinori TAKEUCHI, Kenji WATANABE, Hiroyuki MIYAKE
  • Publication number: 20210047539
    Abstract: It is an object of the present invention to provide a coating composition that is capable of forming a coating film having good coating film appearance (e.g., smoothness) and design properties and having well-balanced coating film properties such as scratch resistance, and that allows its coating film to be cured by a simple method because of being thermally curable. A further object of the present invention is to provide a method for forming a coating film, which comprises forming a coating film using the coating composition of the present invention. More specifically, the present invention provides a coating composition containing at least one branched polymer selected from a dendrimer and a hyperbranched polymer, and an isocyanate compound having an isocyanate group and an alkylsilanol group, and having the number of isocyanate functional group of 1 or more.
    Type: Application
    Filed: December 11, 2018
    Publication date: February 18, 2021
    Applicant: NIPPON PAINT AUTOMOTIVE COATINGS CO., LTD.
    Inventors: Takunori MATSUFUJI, Karl JOOST, Katsumi MIZUGUCHI, Shinichi HORII, Takashi KAWAI
  • Publication number: 20210019884
    Abstract: A system includes an endoscope including a scope and an image sensor. The image sensor is configured to capture medical image data that includes effective image portion data and a mechanical vignetting portion data, the mechanical vignetting portion data of the medical image data being generated due to mechanical vignetting caused by a difference in the image sensor which generates the medical image data and the scope. There is also circuitry configured to determine evaluation information from image data which is from the effective image portion data, and execute a control process to at least partially control at least one of an autofocus processing, and an auto white balance processing on the endoscope on the basis of the evaluation information.
    Type: Application
    Filed: March 12, 2019
    Publication date: January 21, 2021
    Applicant: Sony Corporation
    Inventors: Takashi KAWAI, Kiyoshi HOSONO
  • Patent number: 10890213
    Abstract: A value of R/RBASE is not smaller than 0.75 and not greater than 0.87 where R represents a reference radius of curvature of a larger end face of a roller and RBASE represents a distance from an apex of a cone angle of the roller to a larger flange surface of an inner ring 13. A distance from an outermost surface of at least any one of an outer ring, the inner ring, and a plurality of rollers to a bottom of a nitrogen enriched layer is not shorter than 0.2 mm. A crowning profile is formed on a rolling surface of the roller.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: January 12, 2021
    Assignee: NTN CORPORATION
    Inventors: Takashi Kawai, Tomoki Matsushita
  • Patent number: 10883536
    Abstract: A tapered roller bearing includes a cage supporting a plurality of tapered rollers. The cage includes a large-diameter annular portion; a small-diameter annular portion; pillars through which the large-diameter annular portion and the small-diameter annular portion are coupled together; and pockets in which the respective tapered rollers are disposed. A space is defined between the outer ring and the inner ring, and constitutes an oil flow path through which lubricating oil (a) flows from the side of the small flange to the side of the large flange. Each pillar includes, in its radially inner surface, an oil groove in which lubricating oil is retained. When the cage rotates, the lubricating oil retained in the oil grooves of the pillars is scattered out of the oil grooves, thereby preventing seizure between the large-diameter end surfaces of the tapered rollers and the large flange of the inner ring.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: January 5, 2021
    Assignee: NTN CORPORATION
    Inventors: Hiroki Matsubuchi, Takashi Kawai
  • Publication number: 20200378437
    Abstract: A cage for a tapered roller bearing is provided which includes a large-diameter-side annular portion circumferentially extending along the large end surfaces of a plurality of tapered rollers; a small-diameter-side annular portion circumferentially extending along the small end surfaces of the tapered rollers; and a plurality of pillars coupling together the large-diameter-side annular portion and the small-diameter-side annular portion. The large-diameter-side annular portion has large-diameter-side pocket surfaces opposed to the large end surfaces of the respective tapered rollers. The large-diameter-side pocket surfaces include oil retaining holes in the form of blind holes. Lubricating oil is introduced into the oil retaining holes and retained therein by capillary action.
    Type: Application
    Filed: February 20, 2019
    Publication date: December 3, 2020
    Applicant: NTN Corporation
    Inventors: Hiroki MATSUBUCHI, Takashi KAWAI, Takanori ISHIKAWA, Yasuhito FUJIKAKE
  • Patent number: 10830279
    Abstract: In a tapered roller bearing, a cage includes a plurality of trapezoidal pockets and the pockets accommodate and hold a plurality of rollers. A notch having a width is provided in a post on a smaller width side of the pocket of the cage from a boundary between a smaller annular portion and a post toward a larger annular portion. Lubricating oil which flows from an inner diameter side of the cage toward an inner ring is quickly discharged through the notch toward an outer ring on an outer diameter side. A distance from an outermost surface of at least any one of the outer ring and the inner ring of the roller and a plurality of rollers to a bottom of a nitrogen enriched layer is equal to or longer than 0.2 mm. A rolling surface of the roller is provided with a logarithmic crowning profile.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: November 10, 2020
    Assignee: NTN CORPORATION
    Inventors: Takashi Kawai, Tomoki Matsushita
  • Patent number: 10816034
    Abstract: A tapered roller bearing includes inner and outer rings having tapered raceway surfaces. The inner ring also includes large-collar and small-collar surfaces respectively on large-diameter and small-diameter sides of its raceway surface. A plurality of tapered rollers are arrayed between the raceway surfaces. Each of the tapered rollers has a large end surface that contacts and is guided by the large-collar surface. A set curvature radius (R) of the large end surface of each of the tapered rollers and a base curvature radius (RBASE) from a vertex of a cone angle of each of the tapered rollers to the large-collar surface has a ratio R/RBASE in a range of 0.75 to 0.87, and when RACTUAL represents an actual curvature radius of the large end surface, a ratio RACTUAL/R is equal to or larger than 0.5.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: October 27, 2020
    Assignee: NTN CORPORATION
    Inventors: Tomoki Matsushita, Takashi Kawai
  • Publication number: 20200248744
    Abstract: A difference between a maximum value and a minimum value of arithmetic mean roughness Ra of an annular surface region in contact with a larger flange surface, in a larger end face of the tapered roller, is not greater than 0.02 ?m. A value of a ratio R/RBASE is not smaller than 0.75 and not greater than 0.87 where R represents a set radius of curvature of the larger end face of the tapered roller and RBASE represents a distance from a point which is an apex of a cone angle of the tapered roller to the larger flange surface of the inner ring. A ratio Rprocess/R is not lower than 0.5 where Rprocess represents an actual radius of curvature after grinding of the larger end face of the tapered roller and R represents a set radius of curvature.
    Type: Application
    Filed: September 26, 2018
    Publication date: August 6, 2020
    Inventors: Takanori ISHIKAWA, Takashi KAWAI, Tomoki MATSUSHITA, Nozomi ISOBE
  • Publication number: 20200191197
    Abstract: Two projecting portions (45a and 45b) configured to guide a tapered roller (3) on distal end surfaces thereof are formed on a side surface (43a) of a pillar portion (43) of a retainer (4) so as to be separated apart from each other in a roller axis direction. The projecting portions (45a and 45b) are separated apart from each other in the roller axis direction with respect to both a small-diameter-side annular portion (41) and a large-diameter-side annular portion (42). The projecting portions (45a and 45b) each have a force-fit margin (F).
    Type: Application
    Filed: March 7, 2017
    Publication date: June 18, 2020
    Inventors: Takashi KAWAI, Tornoki MATSUSHITA