Patents by Inventor Hiroshi Nakagawa

Hiroshi Nakagawa 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).

  • Publication number: 20200273796
    Abstract: A semiconductor device that includes a semiconductor substrate having a first main surface and a second main surface, a first electrode opposing the first main surface of the semiconductor substrate, a dielectric layer between the semiconductor substrate and the first electrode, a first resistance control layer on the first electrode, a wiring part on the first resistance control layer, and a second electrode opposing the second main surface of the semiconductor substrate. The first resistance control layer includes a first region that has a first electrical resistivity and that electrically connects the first electrode and the wiring part, and a second region that is aligned with the first region and has a second electrical resistivity higher than the first electrical resistivity of the first region.
    Type: Application
    Filed: May 14, 2020
    Publication date: August 27, 2020
    Inventors: Yasuhiro Murase, Tomoyuki Ashimine, Hiroshi Nakagawa
  • Patent number: 10753427
    Abstract: A rotary actuator has: one motor, two strain wave reduction gears disposed symmetrically on both sides of the motor, and one output shaft. The output rotation of the motor is reduced in speed at the same reduction ratio by the two strain wave reduction gears and is outputted from the output shaft to a load side. The first and second externally toothed gears of the first and second strain wave reduction gears are flexed into ellipsoidal shapes with 90 degrees shifted in phase, and are meshed with first and second internally toothed gears. The angle transmission errors of the first and second strain wave reduction gears transmitted to the output shaft are reduced by cancelling each other out in the output shaft. Reduced-speed output rotation that has the reduced angle transmission errors is outputted to the load side from the output shaft.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: August 25, 2020
    Assignee: HARMONIC DRIVE SYSTEMS INC.
    Inventors: Hiroshi Nakagawa, Daisuke Yaguchi
  • Patent number: 10744654
    Abstract: A gripper control device includes a controller, the controller is configured to conduct: a grasp quality evaluation process to obtain a grasp quality contribution degree for each of a plurality of contact positions at which fingers that support the object are in contact with the object; a finger-to-be-moved determination process configured to determine, as a finger-to-be-moved, the finger corresponding to one of the contact positions at which the grasp quality contribution degree is low; and a finger movement control process configured to send a control command to a finger driving apparatus, wherein the grasp quality contribution degree for each of the multiple contact positions is defined using at least one of the following elements: relative positions of the plurality of contact positions related to the object; and friction coefficients between the object and the fingers at the plurality of contact positions.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: August 18, 2020
    Assignee: FANUC CORPORATION
    Inventors: Weijia Li, Wenjie Chen, Hiroshi Nakagawa, Takafumi Kajiyama
  • Publication number: 20200254622
    Abstract: A machine learning device that learns an operation of a robot for picking up, by a hand unit, any of a plurality of workpieces placed in a random fashion, including a bulk-loaded state, includes a state variable observation unit that observes a state variable representing a state of the robot, including data output from a three-dimensional measuring device that obtains a three-dimensional map for each workpiece, an operation result obtaining unit that obtains a result of a picking operation of the robot for picking up the workpiece by the hand unit, and a learning unit that learns a manipulated variable including command data for commanding the robot to perform the picking operation of the workpiece, in association with the state variable of the robot and the result of the picking operation, upon receiving output from the state variable observation unit and output from the operation result obtaining unit.
    Type: Application
    Filed: April 28, 2020
    Publication date: August 13, 2020
    Inventors: Takashi YAMAZAKI, Takumi OYAMA, Shun SUYAMA, Kazutaka NAKAYAMA, Hidetoshi KUMIYA, Hiroshi NAKAGAWA, Daisuke OKANOHARA, Ryosuke OKUTA, Eiichi MATSUMOTO, Keigo KAWAAI
  • Patent number: 10717196
    Abstract: A machine learning device that learns an operation of a robot for picking up, by a hand unit, any of a plurality of workpieces placed in a random fashion, including a bulk-loaded state, includes a state variable observation unit that observes a state variable representing a state of the robot, including data output from a three-dimensional measuring device that obtains a three-dimensional map for each workpiece, an operation result obtaining unit that obtains a result of a picking operation of the robot for picking up the workpiece by the hand unit, and a learning unit that learns a manipulated variable including command data for commanding the robot to perform the picking operation of the workpiece, in association with the state variable of the robot and the result of the picking operation, upon receiving output from the state variable observation unit and output from the operation result obtaining unit.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: July 21, 2020
    Assignees: FANUC CORPORATION, PREFERRED NETWORKS, INC.
    Inventors: Takashi Yamazaki, Takumi Oyama, Shun Suyama, Kazutaka Nakayama, Hidetoshi Kumiya, Hiroshi Nakagawa, Daisuke Okanohara, Ryosuke Okuta, Eiichi Matsumoto, Keigo Kawaai
  • Publication number: 20200176614
    Abstract: A capacitor that includes an insulating base material having a first main surface and a second main surface facing each other, the insulating base material defining first and second trenches extending from the first main surface into the base material such that first trench and the second trench overlap each other; a first conductor in the first trench; a first external electrode on the first main surface of the base material and connected to the first conductor; a second conductor in the second trench; and a second external electrode on the second main surface of the base material and connected to the second conductor.
    Type: Application
    Filed: February 4, 2020
    Publication date: June 4, 2020
    Inventors: Tomoyuki Ashimine, Hiroshi Nakagawa, Yasuhiro Murase
  • Publication number: 20200129235
    Abstract: A method, consisting of ablating tissue for a time period, measuring a contact force applied during the time period, and measuring a power used during the time period. The method further includes ceasing ablating the tissue when a desired size of a lesion produced in the tissue, as estimated using an integral over the time period of a product of the contact force raised to a first non-unity exponent and the power raised to a second non-unity exponent, is reached.
    Type: Application
    Filed: December 27, 2019
    Publication date: April 30, 2020
    Inventors: Meir Bar-Tal, Erez Silberschein, Assaf Rubissa, Garth Francis Constantine, Hiroshi Nakagawa
  • Publication number: 20200066445
    Abstract: A capacitor is provided that includes a base having a first main surface and a second main surface opposing each other with a trench formed on a side of the first main surface (110A. Moreover, a dielectric film is disposed in a region that includes an inside of the trench on the side of the first main surface of the base; a conductor film is provided that includes a first conductor layer disposed on the dielectric film, which is the region including the inside of the trench and a second conductor layer disposed on the first conductor layer; and a stress relieving portion is provided in contact with at least a part of the end of the first conductor layer. Moreover, a thickness of the stress relieving portion is smaller than a thickness of the conductor film, outside the trench portion of the first main surface of the base.
    Type: Application
    Filed: October 30, 2019
    Publication date: February 27, 2020
    Inventors: Hiroshi NAKAGAWA, Tomoyuki Ashimine, Yasuhiro Murase
  • Publication number: 20200062925
    Abstract: A polyamide resin composition includes 100 parts by weight of a polyamide resin (A), 0.1 to 50 parts by weight of a fire retardant (B), 0.001 to 1 part by weight of a metal and/or salt thereof (C), and 0.001 to 1 part by weight of a compound (D) as represented by formula [I]: QX [I] wherein in formula [I], Q represents an aromatic hydrocarbon group or an alicyclic hydrocarbon group and X represents a 5-membered heterocyclic ring group, Q and X forming a covalent bond or a fused ring.
    Type: Application
    Filed: November 10, 2017
    Publication date: February 27, 2020
    Inventors: Akiyoshi Tamai, Hiroshi Nakagawa, Masaru Akita, Hideyuki Umetsu
  • Publication number: 20200016776
    Abstract: Provided is a life evaluating device that evaluates the life of a lubricant in a machine including a motor and a transmission mechanism that is lubricated by the lubricant and transmits power of the motor to a movable unit. The life evaluating device includes a motor-heat-value calculating unit that calculates a motor heat value on the basis of a current value of the motor, a frictional-heat-value calculating unit that calculates a frictional heat value in the transmission mechanism on the basis of rotating speed of the motor and a coefficient of friction of the transmission mechanism, a lubricant-temperature estimating unit that estimates temperature of the lubricant on the basis of the calculated frictional heat value and the calculated motor heat value, and a life estimating unit that estimates the life of the lubricant on the basis of the estimated temperature of the lubricant and information concerning impurities in the lubricant.
    Type: Application
    Filed: June 18, 2019
    Publication date: January 16, 2020
    Inventors: Wei GUO, Hiroshi NAKAGAWA
  • Patent number: 10517670
    Abstract: A method, consisting of ablating tissue for a time period, measuring a contact force applied during the time period, and measuring a power used during the time period. The method further includes ceasing ablating the tissue when a desired size of a lesion produced in the tissue, as estimated using an integral over the time period of a product of the contact force raised to a first non-unity exponent and the power raised to a second non-unity exponent, is reached.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: December 31, 2019
    Assignees: Biosense Webster (Israel) Ltd., University of Oklahoma Health Sciences Center
    Inventors: Meir Bar-Tal, Erez Silberschein, Assaf Rubissa, Garth Francis Constantine, Hiroshi Nakagawa
  • Patent number: 10520386
    Abstract: This vibration measurement device is configured to measure the balancing vibration of the cartridge, a kind of rotating machines, who has a rotor and a cartridge body to support the rotor rotatably for variable operating speed, and is provided with a rigidly fixed support structure, acceleration sensors which detect the vibration of the cartridge, and a flat spring which elastically supports the cartridge with respect to the support structure and has a variable spring constant of elastic support.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: December 31, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Tomoaki Inoue, Katsuya Yamashita, Rimpei Kawashita, Hiroshi Nakagawa, Nariaki Seike, Noriyuki Hayashi, Hideo Mori
  • Publication number: 20190378893
    Abstract: A capacitor that includes a substrate having a principal surface; a dielectric film on the principal surface of the substrate; and an electrode layer on the dielectric film. The substrate has a recess structure portion with at least one recess portion in a second region outside a first region where the electrode layer overlaps the dielectric layer when viewed in a plan view from a normal direction of the principal surface of the substrate, and the dielectric film is on the recess structure portion.
    Type: Application
    Filed: August 21, 2019
    Publication date: December 12, 2019
    Inventors: Tomoyuki Ashimine, Hiroshi Nakagawa, Yasuhiro Murase
  • Publication number: 20190348496
    Abstract: A capacitor that includes a first capacitor layer having a first substrate provided with a first trench structure having a trench, a first electrode, and a second electrode provided in a region of the first trench structure that includes a trench, and a second capacitor layer having a second substrate, a third electrode, and a fourth electrode. Moreover, the first capacitor layer and the second capacitor layer are disposed such that the second electrode and the third electrode oppose each other and are electrically connected.
    Type: Application
    Filed: July 25, 2019
    Publication date: November 14, 2019
    Inventors: Yasuhiro Murase, Tomoyuki Ashimine, Hiroshi Nakagawa
  • Patent number: 10465713
    Abstract: An object is to provide a rotary fluid element and a method of correcting unbalance of a rotary fluid element, whereby unbalance of the rotary fluid element can be corrected multiple times in a necessary and sufficient amount without sacrificing strength of blades. A rotary fluid element includes: a plurality of blades extending in a centrifugal direction on an outer peripheral surface of a boss portion and disposed at intervals in a circumferential direction; and a cut-remove portion for reducing unbalance disposed in a blade gap between the blades adjacent in the circumferential direction. The cut-remove portion includes a first cut-remove portion which is cut and removed on a radially-outer rim portion between the blades, and an additional cut-remove portion which is cut and removed on a radially-inner portion disposed inside the first cut-remove portion with respect to a radial direction.
    Type: Grant
    Filed: March 5, 2014
    Date of Patent: November 5, 2019
    Assignee: MITSUBISHI HEAVY INDUSTRIES ENGINE & TURBOCHARGER, LTD.
    Inventors: Nariaki Seike, Hideo Mori, Hiroshi Nakagawa
  • Publication number: 20190265657
    Abstract: A fault prediction system includes a machine learning device that learns conditions associated with a fault of an industrial machine. The machine learning device includes a state observation unit that, while the industrial machine is in operation or at rest, observes a state variable including, e.g., data output from a sensor, internal data of control software, or computational data obtained based on these data, a determination data obtaining unit that obtains determination data used to determine whether a fault has occurred in the industrial machine or the degree of fault, and a learning unit that learns the conditions associated with the fault of the industrial machine in accordance with a training data set generated based on a combination of the state variable and the determination data.
    Type: Application
    Filed: May 9, 2019
    Publication date: August 29, 2019
    Inventors: Shougo INAGAKI, Hiroshi NAKAGAWA, Daisuke OKANOHARA, Ryosuke OKUTA, Eiichi MATSUMOTO, Keigo KAWAAI
  • Publication number: 20190247998
    Abstract: A device and method for judging the presence or absence of an abnormal clearance between paring elements of a passive joint of a robot. The device has sections configured to: calculate a score for each motion path, wherein the score is increased when the paring elements of an objective pair collide with each other and is decreased when the paring elements of the other pair collide with each other; generate a robot motion for moving the robot along the motion path having the score not lower than a predetermined threshold; measure a drive torque or a current value of a motor when the robot is moved according to the generated robot motion; calculate an index value based on a magnitude of variation of the measured drive torque or current value; and judge as to whether the abnormal clearance exists in the objective pair, based on the index value.
    Type: Application
    Filed: February 7, 2019
    Publication date: August 15, 2019
    Inventors: Hiroshi NAKAGAWA, Kenichiro ABE, Yunfeng WU, Hikaru YAMASHIRO, Hideo MATSUI, Soichi ARITA, Yukio TAKEDA, Masumi OHNO
  • Publication number: 20190202070
    Abstract: This gripping hand has a base member and a number of fingers arranged about an axis line passing through the base member, wherein each of the fingers has a flexible finger part having flexibility and a finger base member for supporting the basal end side of the flexible finger part, the gripping hand is provided with a number of link mechanisms that are supported by the base member and that support the respective number of finger base members, and each of the link mechanisms allows the finger base member supported thereby to move relative to the base member such that the orientation of the finger base member supported thereby does not substantially change relative to the base member.
    Type: Application
    Filed: December 13, 2018
    Publication date: July 4, 2019
    Applicant: FANUC CORPORATION
    Inventors: Hiroshi NAKAGAWA, Yuuki KONDOU
  • Patent number: 10317854
    Abstract: A machine learning device that learns a control command for a machine by machine learning, including a machine learning unit that performs the machine learning to output the control command; a simulator that performs a simulation of a work operation of the machine based on the control command; and a first determination unit that determines the control command based on an execution result of the simulation by the simulator.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: June 11, 2019
    Assignee: FANUC CORPORATION
    Inventors: Hiroshi Nakagawa, Takafumi Kajiyama
  • Patent number: 10317853
    Abstract: A fault prediction system includes a machine learning device that learns conditions associated with a fault of an industrial machine. The machine learning device includes a state observation unit that, while the industrial machine is in operation or at rest, observes a state variable including, e.g., data output from a sensor, internal data of control software, or computational data obtained based on these data, a determination data obtaining unit that obtains determination data used to determine whether a fault has occurred in the industrial machine or the degree of fault, and a learning unit that learns the conditions associated with the fault of the industrial machine in accordance with a training data set generated based on a combination of the state variable and the determination data.
    Type: Grant
    Filed: July 27, 2016
    Date of Patent: June 11, 2019
    Assignees: FANUC CORPORATION, PREFERRED NETWORKS, INC.
    Inventors: Shougo Inagaki, Hiroshi Nakagawa, Daisuke Okanohara, Ryosuke Okuta, Eiichi Matsumoto, Keigo Kawaai