Patents by Inventor Akio Kawai

Akio 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).

  • Publication number: 20230268626
    Abstract: This embodiment includes an electrode assembly; a case for housing the electrode assembly; and an external terminal made of a metal and disposed on the case, in which the external terminal includes: a flange extending along an outer surface of the case; and a shaft extending from the flange to pass through the case and be conductive with the electrode assembly, the flange is made of a clad material having a plurality of metal layers layered in a passing direction of the shaft, each adjacent ones of the plurality of metal layers are made of different metals in kind, and one of the plurality of metal layers of the flange at one end in the passing direction is made of the same metal in kind as the metal of the shaft, and is welded to the shaft.
    Type: Application
    Filed: June 15, 2021
    Publication date: August 24, 2023
    Inventors: Jun NAKAMURA, Akio Kawai, Hideyo TOGASHl, Mitsuhiro NAKATANI, Toshihiro TAKADA, Hiroshi INUKAl, Hiroshi ONIZUKA, Naoya HAMAGUCHI
  • Publication number: 20230223623
    Abstract: An energy storage device includes: an electrode assembly; a case that accommodates the electrode assembly; and an external terminal made of metal and disposed in the case, in which the external terminal includes: a flange portion spreading along the case outside the case; and a shaft portion extending from the flange portion, penetrating the case, and electrically connected to the electrode assembly, in which the flange portion includes a plurality of metal layers layered in a penetrating direction of the shaft portion.
    Type: Application
    Filed: May 13, 2021
    Publication date: July 13, 2023
    Inventors: Akio KAWAI, Sho KOZONO
  • Publication number: 20230187794
    Abstract: An energy storage device includes an electrode assembly, a case that houses the electrode assembly, and a metal external terminal disposed in the case, wherein the external terminal includes a flange portion spreading along the case outside the case and a shaft portion extending from the flange portion and penetrating the case, the flange portion is formed of a clad material including a plurality of metal layers stacked in a penetrating direction of the shaft portion, and includes a through hole through which the shaft portion is inserted.
    Type: Application
    Filed: May 13, 2021
    Publication date: June 15, 2023
    Inventors: Jun NAKAMURA, Akio KAWAI
  • Patent number: 11664525
    Abstract: A method for manufacturing an energy storage device according to one aspect of the present invention includes inserting an electrode assembly into a case while causing an insulating member having a sheet-like shape to follow a surface of the electrode assembly in which electrodes are layered. The insulating member includes a first portion corresponding to a first surface of the electrode assembly in a first direction which is a direction of a short side surface of the case and a thickness direction of the electrode assembly, a second portion corresponding to a first end surface which is an end surface of the electrode assembly in a second direction orthogonal to the first direction, a third portion corresponding to a second surface of the electrode assembly in the first direction, and a first extending portion extending from the first portion.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: May 30, 2023
    Assignee: GS Yuasa International Ltd.
    Inventors: Yoshiyuki Honda, Akio Kawai
  • Publication number: 20220311399
    Abstract: A preamplifier amplifies signals input to first and second input terminals. A first switching circuit receives first and second input signals and outputs those to the first and second input terminals. A switched capacitor circuit samples two signals amplified by the preamplifier. Differential signals sampled by the switched capacitor circuit are respectively input to third and fourth input terminals of an integration circuit, and the integration circuit outputs differential signals obtained by those input signals to first and second output terminals. A second switching circuit switches a connection relationship between the switched capacitor circuit and the integration circuit. Each time the cycle changes, the first and second switching circuits switch the connection relationships to cause the signals amplified by the preamplifier to be sampled by double correlation sampling.
    Type: Application
    Filed: March 18, 2022
    Publication date: September 29, 2022
    Inventors: Shu Hirata, Tomohiro Tahara, Akio Kawai, Shun Mugikura
  • Publication number: 20220307866
    Abstract: A preamplifier amplifies signals input to first and second input terminals. A first switching circuit receives first and second input signals and respectively outputs those signals to the first and second input terminals. A switched capacitor circuit samples two signals amplified by the preamplifier. An integration circuit includes a fully differential operational amplifier outputting amplifying differential signals input between third and fourth input terminals between second and first output terminals, and first and second integration capacitors. A second switching circuit switches a connection relationship between the switched capacitor circuit, and the first and second integration capacitors. A third switching circuit switches a connection relationship between the first and second integration capacitors, and third and fourth output terminals.
    Type: Application
    Filed: March 18, 2022
    Publication date: September 29, 2022
    Inventors: Shu Hirata, Tomohiro Tahara, Akio Kawai, Shun Mugikura
  • Patent number: 11340095
    Abstract: An object is to respectively excite transmission coils with different voltages using a single power supply with low power consumption in an electromagnetic induction type encoder. A detection head of an encoder includes a voltage adjustment circuit and a plurality of excitation circuits. The excitation circuit includes a resonant circuit that includes a driving capacitor and a transmission coil connected in series and generates an alternate-current magnetic field inducing currents in scale coils disposed in a plurality of scale tracks on a scale by connecting both ends of the resonant circuit in a state in which the driving capacitor is charged. The voltage adjustment circuit includes a first transformer capacitor and controls a charging voltage of the driving capacitor in a single excitation circuit using the charged first transformer capacitor.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: May 24, 2022
    Assignee: MITUTOYO CORPORATION
    Inventors: Osamu Kawatoko, Toshihiro Hasegawa, Tomohiro Tahara, Akio Kawai
  • Publication number: 20210351430
    Abstract: A method for manufacturing an energy storage device according to one aspect of the present invention includes inserting an electrode assembly into a case while causing an insulating member having a sheet-like shape to follow a surface of the electrode assembly in which electrodes are layered. The insulating member includes a first portion corresponding to a first surface of the electrode assembly in a first direction which is a direction of a short side surface of the case and a thickness direction of the electrode assembly, a second portion corresponding to a first end surface which is an end surface of the electrode assembly in a second direction orthogonal to the first direction, a third portion corresponding to a second surface of the electrode assembly in the first direction, and a first extending portion extending from the first portion.
    Type: Application
    Filed: May 4, 2021
    Publication date: November 11, 2021
    Inventors: Yoshiyuki HONDA, Akio KAWAI
  • Publication number: 20210131831
    Abstract: An object is to respectively excite transmission coils with different voltages using a single power supply with low power consumption in an electromagnetic induction type encoder. A detection head of an encoder includes a voltage adjustment circuit and a plurality of excitation circuits. The excitation circuit includes a resonant circuit that includes a driving capacitor and a transmission coil connected in series and generates an alternate-current magnetic field inducing currents in scale coils disposed in a plurality of scale tracks on a scale by connecting both ends of the resonant circuit in a state in which the driving capacitor is charged. The voltage adjustment circuit includes a first transformer capacitor and controls a charging voltage of the driving capacitor in a single excitation circuit using the charged first transformer capacitor.
    Type: Application
    Filed: October 22, 2020
    Publication date: May 6, 2021
    Inventors: Osamu Kawatoko, Toshihiro Hasegawa, Tomohiro Tahara, Akio Kawai
  • Patent number: 10907996
    Abstract: A measurement apparatus includes: a light source that emits light; a scale that has a plurality of tracks whose patterns are different from each other, the tracks passing at least a part of lights emitted by the light source; a light receiving part that has a plurality of light receiving elements that each output an optical signal corresponding to strength of light received through the tracks; and a signal generation part that generates a serial signal in which a plurality of the optical signals are time-division multiplexed and sends the generated serial signal.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: February 2, 2021
    Assignee: MITUTOYO CORPORATION
    Inventors: Hirokazu Kobayashi, Akio Kawai
  • Patent number: 10720935
    Abstract: An analog-to-digital converter includes a cycle processing unit and a control unit. The cycle processing unit converts an analog input signal into a digital signal having a plurality of bits by performing a plurality of cycle processing on the analog input signal to acquire values of each bit in order from a higher-order bit to a lower-order bit. The control unit controls the cycle processing unit such that a period of the cycle processing is shortened according to a cycled number of the cycle processing.
    Type: Grant
    Filed: June 13, 2019
    Date of Patent: July 21, 2020
    Assignee: MITUTOYO CORPORATION
    Inventors: Akio Kawai, Shun Mugikura
  • Publication number: 20200007139
    Abstract: An analog-to-digital converter includes a cycle processing unit and a control unit. The cycle processing unit converts an analog input signal into a digital signal having a plurality of bits by performing a plurality of cycle processing on the analog input signal to acquire values of each bit in order from a higher-order bit to a lower-order bit. The control unit controls the cycle processing unit such that a period of the cycle processing is shortened according to a cycled number of the cycle processing.
    Type: Application
    Filed: June 13, 2019
    Publication date: January 2, 2020
    Applicant: MITUTOYO CORPORATION
    Inventors: Akio KAWAI, Shun MUGIKURA
  • Publication number: 20190219424
    Abstract: A measurement apparatus includes: a light source that emits light; a scale that has a plurality of tracks whose patterns are different from each other, the tracks passing at least a part of lights emitted by the light source; a light receiving part that has a plurality of light receiving elements that each output an optical signal corresponding to strength of light received through the tracks; and a signal generation part that generates a serial signal in which a plurality of the optical signals are time-division multiplexed and sends the generated serial signal.
    Type: Application
    Filed: January 4, 2019
    Publication date: July 18, 2019
    Inventors: Hirokazu Kobayashi, Akio Kawai
  • Patent number: 9739587
    Abstract: A semiconductor integrated circuit includes a regulator configured to stabilize a power supply voltage from a solar cell and to output the same, a voltage detection circuit configured to detect the power supply voltage from the solar cell or an output voltage from the regulator, a power-on-reset circuit configured to output a reset signal to an external digital circuit by a voltage detection signal output from the voltage detection circuit, a memory main body configured to write and read data by the power supply voltage from the solar cell or the output voltage from the regulator.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: August 22, 2017
    Assignee: MITUTOYO CORPORATION
    Inventors: Osamu Kawatoko, Akio Kawai
  • Publication number: 20150369580
    Abstract: A semiconductor integrated circuit includes a regulator configured to stabilize a power supply voltage from a solar cell and to output the same, a voltage detection circuit configured to detect the power supply voltage from the solar cell or an output voltage from the regulator, a power-on-reset circuit configured to output a reset signal to an external digital circuit by a voltage detection signal output from the voltage detection circuit, a memory main body configured to write and read data by the power supply voltage from the solar cell or the output voltage from the regulator.
    Type: Application
    Filed: June 18, 2015
    Publication date: December 24, 2015
    Inventors: Osamu Kawatoko, Akio Kawai
  • Publication number: 20050111698
    Abstract: An aspect of the present invention provides a vehicle surroundings monitoring device that includes an object extracting unit configured to extract objects that emit infrared rays from a photographed infrared image, a pedestrian candidate extracting unit configured to extract pedestrian candidates based on the shape of the images of objects extracted by the object extracting unit, and a structure exclusion processing unit configured to exclude structures from the pedestrian candidates based on the gray levels of the images of the pedestrian candidates.
    Type: Application
    Filed: November 16, 2004
    Publication date: May 26, 2005
    Inventor: Akio Kawai
  • Publication number: 20050074143
    Abstract: An image of a coupler at a connection target vehicle or an image of an identification marker provided near the coupler captured in advance with a camera, is stored in memory as a template image. A decision is made as to whether or not an image of the view behind a subject vehicle captured with the camera includes a portion matching the template image. If a portion matching the template image is judged to be included in the image of the view behind the subject vehicle, a guide line extending rearward from the coupler at the subject vehicle is drawn and displayed over the image of the view behind the subject vehicle.
    Type: Application
    Filed: September 30, 2004
    Publication date: April 7, 2005
    Inventor: Akio Kawai
  • Patent number: 6091323
    Abstract: An alarm apparatus for alarming a driver of a vehicle is provided. The alarm apparatus includes a first indicator disposed on a front center console inside the vehicle, a second indicator located in a windshield of the vehicle, a radar unit, a vehicle speed sensor and a controller. In operation, when a distance between the vehicle and the one ahead is less than a first alarm distance, the first indicator is activated to display the alarm. Further, when the distance is less than a second alarm distance smaller than the first alarm distance, the second indicator is activated to display the alarm. Even if the driver does not gaze ahead but the instruments, it is possible for the driver to look at the first indicator activated more frequency than the second indicator, thereafter shift his eyes ahead and finally brake the vehicle after confirming the preceding vehicle with composure.
    Type: Grant
    Filed: April 13, 1998
    Date of Patent: July 18, 2000
    Assignee: Nissan Motor Co., Ltd.
    Inventor: Akio Kawai
  • Patent number: 5029234
    Abstract: A system and method for communicating a vehicle with a calling party are disclosed in which even when a communication circuit is interrupted during a data communication of the system with the calling party such as a base station due to a worse circuit condition, the calling from the system to the calling party is carried out without operation of a switch for activating the system to start calling so that the communication with the calling party is restarted. The communication data includes a vehicle identification code (ID information) and/or instantaneous position of the vehicle.
    Type: Grant
    Filed: April 21, 1988
    Date of Patent: July 2, 1991
    Assignee: Nissan Motor Company, Limited
    Inventors: Akio Kawai, Yasuhiro Okada, Masaaki Taniguchi, Hiroshi Ueno, Masami Kiyoto
  • Patent number: 4639676
    Abstract: The diagnostic device comprises voltage divider resistors, two comparators, a start switch, a microcomputer, two transistors, and two light emitting diodes. The ignition signal is voltage-divided by the voltage divider resistors, and the result of this voltage division is input into the positive terminals of the comparators. Reference voltages are input to the negative terminals of the comparators which determine how high the inputs to the positive terminals must be for each comparator to have an "H" level output. When the start switch is turned ON the device starts to operate. In the microcomputer, which has a timer function built in, the interrupt terminal (INT) becomes connected to the output terminal of the comparator; the reset terminal (RES) becomes connected to the start switch.
    Type: Grant
    Filed: October 18, 1984
    Date of Patent: January 27, 1987
    Assignee: Nissan Motor Co., Ltd.
    Inventors: Akio Kawai, Ken Ito, Hideo Iwamoto