Patents by Inventor Keiichi Yamamoto

Keiichi Yamamoto 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: 11368019
    Abstract: An active filter device includes a power module configured to generate a compensating current to suppress a harmonic current generated from a load device and a controller configured to control the power module. The controller includes a current command calculation unit configured to calculate a compensating current command to suppress the harmonic current, a control variable calculation unit configured to calculate a control variable based on a deviation between the compensating current command and an actual compensating current, a duty cycle calculation unit configured to calculate duty cycle of each of three phases based on the control variable, a duty cycle modulation unit configured to perform two-phase modulation on the duty cycle of each of three phases, and a control signal generation unit configured to, after the two-phase modulation, generate, from the duty cycle of each of three phases, a control signal to drive the power module.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: June 21, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shuta Ishikawa, Shusaku Nakase, Keiichi Yamamoto, Keisuke Ishikura
  • Publication number: 20220173199
    Abstract: With respect to a display device having an external compensation function, a monitor time can be shortened without increasing the number of wiring lines. A pixel circuit in an i-th row and a j-th column includes an organic EL element (display element), a writing control transistor, a drive transistor, a monitor control transistor, and a holding capacitor. A control terminal of the drive transistor is connected to a data signal line S(j) in the j-th column via the write control transistor. The monitor control transistor includes a first conduction terminal connected to a second conduction terminal of the drive transistor, and a second conduction terminal connected to a data signal line S(j+1) in a (j+1)-th column.
    Type: Application
    Filed: March 28, 2019
    Publication date: June 2, 2022
    Inventors: KEIICHI YAMAMOTO, KOHHEI TANAKA, TAKAYUKI NISHIYAMA
  • Patent number: 11309709
    Abstract: A harmonic current compensating device according to an embodiment of the present disclosure is a harmonic current compensating device including a power converter including at least a pair of arms each including a switching element, the harmonic current compensating device being configured to drive the switching element and supply compensating current to load current flowing between a system power source and a harmonic generating load, in which the switching element includes a unipolar device using a wide bandgap semiconductor.
    Type: Grant
    Filed: July 18, 2018
    Date of Patent: April 19, 2022
    Assignee: Mitsubishi Electric Corporation
    Inventors: Keisuke Ishikura, Shinsaku Kusube, Kazuyuki Mitsushima, Keiichi Yamamoto
  • Publication number: 20220096410
    Abstract: The present invention may provide a pharmaceutical composition for intraocular administration or oral administration, for preventing or treating a retinal disease (such as age-related macular degeneration), or suppressing a progression of the disease in a subject in need of treatment, the composition comprising an effective amount of one or more compounds selected from the following group, and a pharmaceutically acceptable carrier; and a method therefor, a group consisting of apomorphine, eseroline, ethoxyquin, methyldopa, olanzapine and indapamide.
    Type: Application
    Filed: January 9, 2020
    Publication date: March 31, 2022
    Inventors: Ken-ichi YAMADA, Saki SHINTO, Minato ISHIDA, Keiichi YAMAMOTO
  • Publication number: 20220102975
    Abstract: An active filter device includes a power module configured to generate a compensating current to suppress a harmonic current generated from a load device and a controller configured to control the power module. The controller includes a current command calculation unit configured to calculate a compensating current command to suppress the harmonic current, a control variable calculation unit configured to calculate a control variable based on a deviation between the compensating current command and an actual compensating current, a duty cycle calculation unit configured to calculate duty cycle of each of three phases based on the control variable, a duty cycle modulation unit configured to perform two-phase modulation on the duty cycle of each of three phases, and a control signal generation unit configured to, after the two-phase modulation, generate, from the duty cycle of each of three phases, a control signal to drive the power module.
    Type: Application
    Filed: April 2, 2019
    Publication date: March 31, 2022
    Inventors: Shuta ISHIKAWA, Shusaku NAKASE, Keiichi YAMAMOTO, Keisuke ISHIKURA
  • Patent number: 11257430
    Abstract: A drive method according to the disclosure includes a target row determination step of determining a target row to which a target pixel for which a characteristic of at least one of a drive transistor and an electro-optical element is detected belongs, a luminance calculation step of calculating a representative luminance of a pixel in the target row, and a detection determination step of performing a characteristic detection step of detecting monitoring data indicating the characteristic of at least one of the drive transistor and the electro-optical element of the pixel belonging to the target row in a case where the representative luminance is greater than or equal to a threshold, and skipping the characteristic detection step in a case where the representative luminance is less than the threshold.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: February 22, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Keiichi Yamamoto
  • Publication number: 20220023283
    Abstract: The disclosures as described herein a pharmaceutical composition for preventing or treating a cerebrovascular disorder or a vascular dementia, or suppressing a progression of the diseases in a subject in need of the treatment and so on, the composition comprising one or more compounds selected from the following group, and a pharmaceutically acceptable carrier; and a method using the same. A group consisting of apomorphine, eseroline, ethoxyquin, methyldopa, olanzapine, indapamide, and the others.
    Type: Application
    Filed: January 9, 2020
    Publication date: January 27, 2022
    Inventors: Ken-ichi YAMADA, Keiichi YAMAMOTO
  • Publication number: 20220003444
    Abstract: An air-conditioning apparatus includes: a housing having a first space and a second space that are adjacent to each other; a fan provided in the first space and to suck air into the housing; a heat exchanger provided in the first space and cause heat exchange with the air sucked by the fan to be performed; a refrigerant sensor provided in the second space and to detect refrigerant; and a partition plate provided to partition off the first space and the second space and having an air inlet port and an air outlet port.
    Type: Application
    Filed: January 9, 2019
    Publication date: January 6, 2022
    Inventor: Keiichi YAMAMOTO
  • Publication number: 20210285963
    Abstract: The present invention provides a test method which enables specific diagnosis of early-stage pathology of diabetic nephropathy. There is provided a method of detecting onset or a risk of onset of diabetic nephropathy, comprising measuring IgG4 in a biological sample derived from a subject. This method may further comprise measuring Smad1 in the biological sample derived from the subject. Preferably, both IgG4 and Smad1 are measured.
    Type: Application
    Filed: September 26, 2017
    Publication date: September 16, 2021
    Applicants: HuBit genomix, Inc., Fuso Pharmaceutical Industries, Ltd.
    Inventors: Toshio Doi, Tatsuya Tominaga, Go Ichien, Keiichi Yamamoto
  • Publication number: 20210289119
    Abstract: There is provided with an information processing apparatus. An acquisition unit acquires a captured image. A human body detection unit detects a human body area from the image. A first exposure determination unit determines exposure based on luminance of the human body area detected by the human body detection unit. A face detection unit detects a face area from an image captured at the exposure determined by the first exposure determination unit. A second exposure determination unit determines exposure based on luminance of the face area detected by the face detection unit and to maintain the exposure until a predetermined condition is satisfied.
    Type: Application
    Filed: March 12, 2021
    Publication date: September 16, 2021
    Inventors: Toshiyuki Dobashi, Keiichi Yamamoto, Seiya Ohta, Shunsuke Chino
  • Publication number: 20210254079
    Abstract: The present invention provides mammalian cell expression vectors that impart to mammalian host cells an ability to produce high levels of foreign gene-derived proteins. A ubiquitously acting chromatin opening element (UCOE) is introduced into an expression vector that has a plasmid DNA integrated into a transcriptional hot spot on the chromosome of a dihydrofolate reductase gene-deficient host cell so that it allows for selection of strains that grow in hypoxanthine-thymidine (hereinafter denoted as HT)-free medium, whereby transformants will produce a protein of interest in increased amounts.
    Type: Application
    Filed: May 12, 2019
    Publication date: August 19, 2021
    Applicants: National University Corporation Hokkaido University, Fuso Pharmaceutical Industries, Ltd.
    Inventors: Yasuhiko SUZUKI, Miki NAKAGAWA, Yayoi KAMEDA, Satoru KONNAI, Tomohiro OKAGAWA, Naoya MAEKAWA, Shinya GOTO, Yamato SAJIKI, Kazuhiko OHASHI, Shiro MURATA, Yuzuru KITAHARA, Keiichi YAMAMOTO
  • Publication number: 20210231906
    Abstract: A camera actuator comprises: a fixed-side member; a movable-side member provided so as to be displaced in relation to the fixed-side member, the movable-side member holding a lens unit; and a drive unit that generates drive force to displace the movable-side member within a plane including a first direction and a second direction orthogonal to the first direction, the drive unit generating as drive force a combined force obtained by combining a propulsion force that displaces the movable-side member in a specified direction that is either the first direction or the second direction, and a resistance force that resists an external force acting so as to cause the movable-side member to deviate from the specified direction.
    Type: Application
    Filed: April 10, 2019
    Publication date: July 29, 2021
    Applicant: Mitsumi Electric Co., Ltd.
    Inventors: Masahiro SAITO, Keiichi YAMAMOTO, Hiroshi MATSUDA
  • Publication number: 20210203161
    Abstract: A harmonic current compensating device according to an embodiment of the present disclosure is a harmonic current compensating device including a power converter including at least a pair of arms each including a switching element, the harmonic current compensating device being configured to drive the switching element and supply compensating current to load current flowing between a system power source and a harmonic generating load, in which the switching element includes a unipolar device using a wide bandgap semiconductor.
    Type: Application
    Filed: July 18, 2018
    Publication date: July 1, 2021
    Inventors: Keisuke ISHIKURA, Shinsaku KUSUBE, Kazuyuki MITSUSHIMA, Keiichi YAMAMOTO
  • Patent number: 11029060
    Abstract: An air-conditioning apparatus includes a heat-exchange unit. The heat-exchange unit has a pair of heat exchangers, and a partition plate disposed in such a state that a first region located on the inside of a space between the pair of heat exchangers and a second region located on the outside of the space are formed. The heat-exchange unit is disposed in such an orientation that one of the pair of heat exchangers is provided adjacent to and above the other heat exchanger and that the second region of the partition plate is located on the downstream side of the first region. The second region of the partition plate is provided with an inlet of a drain path.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: June 8, 2021
    Assignee: Mitsubishi Electric Corporation
    Inventors: Yukihiko Kawanori, Keiichi Yamamoto, Hiroshi Tsutsumi, Ayaka Ueyama
  • Publication number: 20210097732
    Abstract: An information processing apparatus includes an extraction unit, a generation unit, and a combining unit. The extraction unit extracts a foreground object region from a captured image captured by an image capturing unit. The generation unit generates a mask image corresponding to the foreground object region in the captured image, and having colors different depending on luminance of the foreground object region. The combining unit combines a mask image generated by the generation unit and a predetermined image to generate an output image.
    Type: Application
    Filed: September 24, 2020
    Publication date: April 1, 2021
    Inventor: Keiichi Yamamoto
  • Publication number: 20210079546
    Abstract: A hydrogen system includes: a compressor in which protons extracted from an anode fluid supplied to an anode move to a cathode through an electrolyte membrane and compressed hydrogen is generated; and a first eliminator including: a water-permeable membrane; a cathode gas flow path through which a cathode gas discharged from the cathode of the compressor flows, the cathode gas flow path being provided on one main surface of the water-permeable membrane; and an accommodation portion provided on the other main surface of the water-permeable membrane and filled with a liquid at a pressure lower than that of the cathode gas. The first eliminator removes moisture contained in the cathode gas.
    Type: Application
    Filed: December 1, 2020
    Publication date: March 18, 2021
    Inventors: HIDENOBU WAKITA, TOMOYA KAMATA, OSAMU SAKAI, KUNIHIRO UKAI, YUKIMUNE KANI, KEIICHI YAMAMOTO, MISA YOROZUYA
  • Publication number: 20210020102
    Abstract: A drive method according to the disclosure present invention includes a target row determination step of determining a target row to which a target pixel for which a characteristic of at least one of a drive transistor and an electro-optical element is detected belongs, a luminance calculation step of calculating a representative luminance of a pixel in the target row, and a detection determination step of performing a characteristic detection step of detecting monitoring data indicating the characteristic of at least one of the drive transistor and the electro-optical element of the pixel belonging to the target row in a case where the representative luminance is greater than or equal to a threshold, and skipping the characteristic detection step in a case where the representative luminance is less than the threshold.
    Type: Application
    Filed: March 29, 2018
    Publication date: January 21, 2021
    Inventor: KEIICHI YAMAMOTO
  • Patent number: 10845657
    Abstract: A liquid crystal panel (a display device) 10 includes pixel sections PX, a black matrix (a pixel in-between light blocking section) 10i disposed to define each of the pixel sections PX that are adjacent to each other, TFTs (switching components) 11 connected to the pixel sections PX and configured to drive the pixel sections PX, respectively, and a divisional light, blocking section 22 disposed to divide the pixel section PX into divided pixels PPX.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: November 24, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Keiichi Yamamoto
  • Publication number: 20200365503
    Abstract: A wiring board includes a plurality of first pads provided in a mounting area on which an electronic component that has a plurality of electrodes is mounted and coupled to the plurality of electrodes; and a plurality of second pads provided in the mounting area and not coupled to the plurality of electrodes, wherein a length of a gap between adjacent pads, among the first pads and the second pads, is 0.18 mm or more and 0.56 mm or less.
    Type: Application
    Filed: May 12, 2020
    Publication date: November 19, 2020
    Applicant: FUJITSU LIMITED
    Inventor: KEIICHI YAMAMOTO
  • Patent number: 10712030
    Abstract: An air-conditioning system includes two or more air-conditioning devices A, each of which in turn includes a fan adapted to adjust a volume of air blown out into a space to be air-conditioned, an airflow direction adjuster adapted to adjust an airflow direction of outlet air blown out by the fan, a human detection sensor adapted to detect human presence, an inlet air temperature sensor adapted to detect temperature of inlet air sucked in by the fan, a position setting device used to set an installation location of each of the air-conditioning devices, and a controller, in which a positional relationship with an adjacent air-conditioning device is calculated based on data from the position setting device and furthermore a human detection area overlap with the adjacent air-conditioning device is calculated.
    Type: Grant
    Filed: March 14, 2016
    Date of Patent: July 14, 2020
    Assignee: Mitsubishi Electric Corporation
    Inventor: Keiichi Yamamoto