Patents by Inventor Akihiro Kawano

Akihiro Kawano 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: 20200343293
    Abstract: A semiconductor apparatus configured to decrease occurrence of exfoliation between a conductor layer and an insulator layer is provided. A first region containing silicon and copper is disposed between a first conductor portion and a first insulator portion. A second region containing silicon and copper is disposed between a second conductor portion and a second insulator portion. The first region has a maximum nitrogen concentration higher than that of the second region.
    Type: Application
    Filed: April 20, 2020
    Publication date: October 29, 2020
    Inventors: Akihiro Kawano, Yukinobu Suzuki, Takayasu Kanesada
  • Patent number: 10680504
    Abstract: To provide a bandgap reference circuit capable of shortening a start time at power-on in a circuit lowered in power consumption. There is provided a bandgap reference circuit using an op amplifier to generate a reference voltage, which is equipped with a first current source connected between a power supply terminal and an operating current input terminal of the op amplifier, a second current source having one end connected to the power supply terminal, and a switch connected between the other end of the second current source and the operating current input terminal of the op amplifier, and in which a switch is turned on at power-on and turned off after starting of the reference voltage.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: June 9, 2020
    Assignee: ABLIC INC.
    Inventors: Akihiro Kawano, Katsuya Goto
  • Publication number: 20200127030
    Abstract: Photoelectric conversion apparatus includes semiconductor layer in which first photoelectric converters are arranged in light-receiving region and second photoelectric converters are arranged in light-shielded region, light-shielding wall arranged above the semiconductor layer and defining apertures respectively corresponding to the first photoelectric converters, and light-shielding film arranged above the semiconductor layer. The light-shielding film includes first portion extending along principal surface of the semiconductor layer to cover the second photoelectric converters. The first portion has lower surface and upper surface. The light-shielding wall includes second portion whose distance from the semiconductor layer is larger than distance between the upper surface and the principal surface. Thickness of the first portion in direction perpendicular to the principal surface is larger than thickness of the second portion in direction parallel to the principal surface.
    Type: Application
    Filed: October 14, 2019
    Publication date: April 23, 2020
    Inventors: Toshiyuki Ogawa, Sho Suzuki, Takehito Okabe, Mitsuhiro Yomori, Yukinobu Suzuki, Akihiro Kawano, Tsutomu Tange
  • Publication number: 20200102016
    Abstract: A side frame comprises a center pillar which includes a reinforcement provided on an outward side in a vehicle width direction and an inner panel provided on an inward side in the vehicle width direction. The reinforcement comprises upper-and-lower hinge attachment sections for attaching rear-door hinges and first-and-second recessed beads for promoting bending of the center pillar in a vehicle side collision. The hinge attachment sections are provided to be spaced apart from each other in a vertical direction. The first recessed bead is provided at a higher level than the lower hinge attachment section. The second recessed bead is provided at a lower level than the lower hinge attachment section and configured to be bent before the first recessed bead in the vehicle side collision.
    Type: Application
    Filed: July 18, 2019
    Publication date: April 2, 2020
    Applicant: MAZDA MOTOR CORPORATION
    Inventors: Hideaki HOSHUYAMA, Shuang GAO, Ryota NAKAYAMA, Akihiro KAWANO, Satoshi OKUMURA
  • Patent number: 10563768
    Abstract: An internal combustion engine includes an oil seal mounted at a crankshaft of an internal combustion engine body to restrain leakage of oil to an outside of the internal combustion engine, an oil seal fixing member fixed to the internal combustion engine body to fix the oil seal to the internal combustion engine body, and a cover member assembled on a lateral surface portion of the internal combustion engine body in a direction in which the crankshaft extends, the cover member covering the oil seal fixing member from a side opposite to the internal combustion engine body, the oil seal fixing member being fixed to the internal combustion engine body at a fixing position which is provided at an inner side than an outer edge portion of the cover member fastened to the internal combustion engine body.
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: February 18, 2020
    Assignee: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Ichiro Kawano, Yuji Iwata, Akihiro Katsumata
  • Patent number: 10431617
    Abstract: There is provided a photoelectric conversion device in which a distance from a main surface to an inner surface of a first part of a dielectric film is smaller than a distance from the main surface to a top surface of a light shielding member, a distance from the main surface to an outer surface of the first part is smaller than a distance from the main surface to an outer surface of a second part of the dielectric film, an outer surface of a third part inclines to the top surface, a surface of a dielectric member inclines to the top surface, between the dielectric film and the top surface in a normal direction, and the dielectric member has a refractive index lower than a refractive index of the dielectric film.
    Type: Grant
    Filed: February 26, 2018
    Date of Patent: October 1, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiro Kawano, Yoshiyuki Nakagawa, Masao Ishioka, Takashi Okagawa
  • Patent number: 10407758
    Abstract: A steel for oil country tubular goods includes, as a chemical composition, by mass %, C, Si, Mn, Al, Mo, P, S, O, N, and a balance containing Fe and impurities, wherein a full width at half maximum HW of a crystal plane corresponding to a (211) crystal plane of an ? phase and a carbon content expressed in mass % in the chemical composition satisfy HW×C1/2?0.38, the carbon content and a molybdenum content expressed in mass % in the chemical composition satisfy C×Mo?0.6, a number of M2C carbides having a hexagonal crystal structure and having an equivalent circle diameter of 1 nm or more is 5 pieces or more per one square micron, and an yield strength is 758 MPa or more.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: September 10, 2019
    Assignee: NIPPON STEEL CORPORATION
    Inventors: Tomohiko Omura, Yuji Arai, Kaori Kawano, Akihiro Sakamoto, Kazuo Okamura, Kenji Yamamoto, Keiichi Kondo, Koji Nagahashi, Masanao Seo
  • Patent number: 10396667
    Abstract: There is provided a DC-DC converter which is safe and secure, but yet with low power consumption. The DC-DC converter is configured such that an overcurrent protection circuit is operated intermittently only for a predetermined period of time based on a signal output from an output control circuit to turn on a switching element.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: August 27, 2019
    Assignee: ABLIC INC.
    Inventors: Akihiro Kawano, Katsuya Goto
  • Patent number: 10333292
    Abstract: To provide a switching regulator equipped with an overheat protection circuit small in current consumption. A switching regulator of the present invention is configured to intermittently operate an overheat protection circuit only for a prescribed period based on a signal turning on a switching element, which is outputted from an output control circuit.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: June 25, 2019
    Assignee: ABLIC INC.
    Inventors: Akihiro Kawano, Katsuya Goto
  • Publication number: 20190188497
    Abstract: An apparatus for identifying a line marking on a road surface. In the apparatus, an extractor extracts a paint candidate that is a candidate for road surface paint used to identify a line marking in an image captured by a camera mounted on a vehicle to capture an image of an area including a road surface ahead of the vehicle. A determiner determines whether or not the paint candidate has at least one predefined flare feature. A line marking identifier identifies a line marking using the paint candidate which meets an identification condition used to identify a line marking. The line marking identifier sets the identification condition to be more stringent for a flare paint candidate that is the paint candidate determined by the determiner to have the at least one predefined flare feature than for the paint candidate determined by the determiner to have no predefined flare feature.
    Type: Application
    Filed: December 17, 2018
    Publication date: June 20, 2019
    Inventors: Taiki KAWANO, Shunsuke SUZUKI, Shunya KUMANO, Akihiro WATANABE
  • Patent number: 10298121
    Abstract: Provided are a switching regulator and a voltage-current conversion circuit configured to shorten a start-up period. The voltage-current conversion circuit includes: a first MOS transistor of a first conductivity type including a gate and a drain connected in common, and a source connected to a first power supply terminal; a first resistor connected between the drain of the first MOS transistor and a second power supply terminal; and a correction current generation unit including a second resistor, and configured to generate, as a correction current, through use of the second resistor, a current corresponding to a current generated when a voltage corresponding to an absolute value of a gate-source voltage of the first MOS transistor is applied to the first resistor. The voltage-current conversion circuit is configured to add the correction current to a current flowing through the first resistor, to thereby generate the conversion current.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: May 21, 2019
    Assignee: ABLIC INC.
    Inventors: Kosuke Takada, Akihiro Kawano
  • Patent number: 10284085
    Abstract: A switching regulator includes a comparator, an on-time control circuit, an R-S flip-flop circuit, and a timer circuit that outputs a count-up signal, where the comparator switches an operation current to a low current consumption mode in response to the count-up signal so as to reduce the operation current in a light load operating mode.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: May 7, 2019
    Assignee: ABLIC INC.
    Inventors: Akihiro Kawano, Katsuya Goto
  • Patent number: 10124838
    Abstract: A deflector comprises a protrusion portion which protrudes downward, including a slant face portion slanting obliquely rearward and downward, and a vertical wall portion which is provided in back of the protrusion portion to extend in a vehicle width direction. A lower end portion of the vertical wall portion is positioned at a lower level than a rear end portion of the slant face portion. The lower end portion of part of the vertical wall portion located inward from the other part of the vertical wall portion located so as to overlap the front wheel in a front view is positioned at a higher level than the lower end portion of the other part of the vertical wall portion located so as to overlap the front wheel in the front view.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: November 13, 2018
    Assignee: MAZDA MOTOR CORPORATION
    Inventors: Nobuyuki Shibutake, Nobuyuki Nakayama, Koji Yoshitake, Akihiro Kawano, Masafumi Aburame
  • Patent number: 10096545
    Abstract: There is provided an image capturing apparatus including a pixel circuit that generates a pixel signal based on an electric charge generated by photoelectric conversion and a logic circuit that outputs a signal based on the pixel signal. The image capturing apparatus includes a first contact plug connected to a source or a drain of a first transistor constituting the pixel circuit and a second contact plug connected to a source or a drain of a second transistor constituting the logic circuit. A diameter of the first contact plug is smaller than a diameter of the second contact plug.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: October 9, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Akihiro Kawano, Tsutomu Tange, Masao Ishioka, Koichi Tazoe
  • Publication number: 20180247967
    Abstract: There is provided a photoelectric conversion device in which a distance from a main surface to an inner surface of a first part of a dielectric film is smaller than a distance from the main surface to a top surface of a light shielding member, a distance from the main surface to an outer surface of the first part is smaller than a distance from the main surface to an outer surface of a second part of the dielectric film, an outer surface of a third part inclines to the top surface, a surface of a dielectric member inclines to the top surface, between the dielectric film and the top surface in a normal direction, and the dielectric member has a refractive index lower than a refractive index of the dielectric film.
    Type: Application
    Filed: February 26, 2018
    Publication date: August 30, 2018
    Inventors: Akihiro Kawano, Yoshiyuki Nakagawa, Masao Ishioka, Takashi Okagawa
  • Patent number: 10050532
    Abstract: The DC-DC converter includes: a switching element connected between an inductor and a power supply terminal; a pseudo ripple generation circuit configured to generate a pseudo ripple voltage depending on a ripple component that is generated in the output voltage, and a smoothed voltage by smoothing the pseudo ripple voltage; a comparison circuit configured to combine a first comparison result obtained by comparing the pseudo ripple voltage and the smoothed voltage to each other, and a second comparison result obtained by comparing a reference voltage and a feedback voltage obtained by dividing the output voltage to each other, and output a comparison result signal; and an output control circuit configured to control the switching element to be turned on and off based on the comparison result signal. The comparison circuit is configured to output only the second comparison result, as the comparison result signal, when a load becomes lighter.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: August 14, 2018
    Assignee: ABLIC INC.
    Inventors: Akihiro Kawano, Katsuya Goto
  • Patent number: 10008935
    Abstract: There is provided a DC-DC converter which is safe and secure, but yet with low power consumption. The DC-DC converter is configured to monitor the output voltage of an error amplifier, and detect that the output voltage of the error amplifier becomes a fixed value or smaller to drive an overheat protection circuit and a supply voltage monitoring circuit intermittently.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: June 26, 2018
    Assignee: ABLIC INC.
    Inventors: Akihiro Kawano, Katsuya Goto
  • Patent number: 10008923
    Abstract: To provide a soft start circuit capable of obtaining a high-accuracy soft start time. The soft start circuit is equipped with a constant current source, an output terminal which outputs a soft start voltage, a ground terminal, a first transistor which is connected between the constant current source and the ground terminal and has a gate and a drain both short-circuited, a second transistor which is connected between the constant current source and the output terminal and receives a clock signal at a gate thereof, and a capacitor connected between the second transistor and the ground terminal.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: June 26, 2018
    Assignee: ABLIC INC.
    Inventors: Akihiro Kawano, Katsuya Goto
  • Patent number: 9941787
    Abstract: A reference voltage generation circuit includes a bandgap reference circuit, a first resistive element and a second resistive element connected in series between the output node and a ground terminal, a third resistive element, a fourth resistive element, and a first switch connected in series between the output node and the ground terminal, and a second switch having one end connected to a connecting point of the first resistive element and the second resistive element, at which a reference voltage is generated, and the other end connected to a connecting point of the third resistive element and the fourth resistive element. A ratio between resistance values of the first resistive element and the second resistive element is equal to a ratio between resistance values of the third resistive element and the fourth resistive element. The first and second switches are turned on at power-on and turned off after the reference voltage is started.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: April 10, 2018
    Assignee: SII SEMICONDUCTOR CORPORATION
    Inventors: Akihiro Kawano, Katsuya Goto
  • Patent number: 9912237
    Abstract: To provide a COT-controlled switching regulator capable of preventing an output voltage from excessively exceeding a desired voltage even though a light load is connected to an output terminal. A switching regulator of the present invention is configured to be equipped with a 100% DUTY detection circuit which detects a 100% DUTY at which a high-side switching element continues an on state for a prescribed time or more and outputs a detected signal to an output control circuit and to cause the output control circuit to turn off the high-side switching element when the output control circuit receives the detected signal therein.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: March 6, 2018
    Assignee: SII SEMICONDUCTOR CORPORATION
    Inventors: Akihiro Kawano, Katsuya Goto