Patents by Inventor Yasuhiro Yoshikawa

Yasuhiro Yoshikawa 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: 20240108205
    Abstract: A catheter inserter for inserting a balloon catheter into an insertion opening of an endoscope provided with a valve. The balloon catheter includes a balloon attached on a distal end side of a shaft and configured to be expanded by an expansion fluid supplied from a proximal end side of the shaft, and an elastic band wound around an outer periphery of an intermediate portion of the balloon and configured to limit expansion of the balloon at the intermediate portion. The catheter inserter includes, on a distal end side thereof, a restrained member support structure configured to support a portion of an outer periphery of the elastic band. A proximal end support portion supporting a proximal end portion of the elastic band from a proximal end side is provided at a proximal end portion of the restrained member support structure.
    Type: Application
    Filed: August 8, 2023
    Publication date: April 4, 2024
    Inventors: Daisuke YOSHIKAWA, Yasuhiro OKAWA, Itsuki NAKAGAMI
  • Patent number: 11940750
    Abstract: Paper physical property detecting device includes a first detector that measures a sheet of paper (hereinafter, merely referred to as a paper) made to stop temporarily on a conveyance path and acquires a first value corresponding to a first physical property, a second detector that measures a paper while conveying the paper on the conveyance path and acquires a second value corresponding to a second physical property with regard to a physical property different from the first physical property; and a corrector that corrects the first value on a basis of the second value and creates post correction data.
    Type: Grant
    Filed: October 18, 2022
    Date of Patent: March 26, 2024
    Assignee: KONICA MINOLTA, INC.
    Inventors: Hiroyuki Yoshikawa, Hitoshi Asano, Yumiko Izumiya, Yasuhiro Koide
  • Publication number: 20240097671
    Abstract: A semiconductor device includes a first transistor, a first drive circuit including a second transistor, and a second drive circuit including a third transistor. The second transistor and the third transistor are connected in series; and a connection node of the second and third transistors is connected to a gate electrode of the first transistor. The first transistor, the second transistor, and the third transistor are normally-off MOS HEMTs formed in a first substrate that includes GaN. The first drive circuit charges a parasitic capacitance of the first transistor. The second drive circuit discharges the parasitic capacitance of the first transistor.
    Type: Application
    Filed: February 10, 2023
    Publication date: March 21, 2024
    Inventors: Toru SUGIYAMA, Noriaki YOSHIKAWA, Yasuhiko KURIYAMA, Akira YOSHIOKA, Hitoshi KOBAYASHI, Hung HUNG, Yasuhiro ISOBE, Tetsuya OHNO, Hideki SEKIGUCHI, Masaaki ONOMURA
  • Patent number: 11772388
    Abstract: A thermal print head includes a heat-generating substrate, a resistor layer, a conductive layer, a first substrate, a second substrate, and a third substrate. The heat-generating substrate includes a heat-generating substrate obverse face and a heat-generating substrate reverse face that are spaced apart from each other in a thickness direction. The resistor layer is supported by the heat-generating substrate. The conductive layer is supported by the heat-generating substrate, and electrically connected to the resistor layer. The first substrate is located upstream of the heat-generating substrate in a sub-scanning direction. The second substrate is located upstream of the first substrate in the sub-scanning direction. The third substrate is bonded to the first substrate and the second substrate and higher in flexibility than the first substrate.
    Type: Grant
    Filed: May 25, 2020
    Date of Patent: October 3, 2023
    Assignee: ROHM CO., LTD.
    Inventors: Yasuhiro Yoshikawa, Toshihiro Kimura
  • Publication number: 20220203702
    Abstract: A thermal print head includes a heat-generating substrate, a resistor layer, a conductive layer, a first substrate, a second substrate, and a third substrate. The heat-generating substrate includes a heat-generating substrate obverse face and a heat-generating substrate reverse face that are spaced apart from each other in a thickness direction. The resistor layer is supported by the heat-generating substrate. The conductive layer is supported by the heat-generating substrate, and electrically connected to the resistor layer. The first substrate is located upstream of the heat-generating substrate in a sub-scanning direction. The second substrate is located upstream of the first substrate in the sub-scanning direction. The third substrate is bonded to the first substrate and the second substrate and higher in flexibility than the first substrate.
    Type: Application
    Filed: May 25, 2020
    Publication date: June 30, 2022
    Inventors: Yasuhiro YOSHIKAWA, Toshihiro KIMURA
  • Patent number: 10632760
    Abstract: A thermal printhead includes a substrate, a resistor layer with heat generation portions supported by the substrate and aligned in a primary scanning direction, a wiring layer supported by the substrate to form a conductive path to the heat generation portions, an insulating layer interposed between the substrate and the resistor layer, and a reflection layer located opposite to the heat generation portions with respect to the insulating layer. The reflection layer overlaps with the heat generation portions as viewed in a thickness direction of the heat generation portions and has a greater heat reflectivity than the insulating layer.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: April 28, 2020
    Assignee: ROHM CO., LTD.
    Inventors: Toshihiro Kimura, Akira Fujita, Kazuya Nakakubo, Satoshi Kimoto, Yasuhiro Yoshikawa, Tadashi Yamamoto
  • Publication number: 20190263141
    Abstract: A thermal printhead includes a substrate, a resistor layer with heat generation portions supported by the substrate and aligned in a primary scanning direction, a wiring layer supported by the substrate to form a conductive path to the heat generation portions, an insulating layer interposed between the substrate and the resistor layer, and a reflection layer located opposite to the heat generation portions with respect to the insulating layer. The reflection layer overlaps with the heat generation portions as viewed in a thickness direction of the heat generation portions and has a greater heat reflectivity than the insulating layer.
    Type: Application
    Filed: February 20, 2019
    Publication date: August 29, 2019
    Inventors: Toshihiro Kimura, Akira Fujita, Kazuya Nakakubo, Satoshi Kimoto, Yasuhiro Yoshikawa, Tadashi Yamamoto
  • Patent number: 9413272
    Abstract: Provided is a power generation device having a dielectric body and an electret, where power is generated by varying the distance between the dielectric body and the electret. A first electrode is connected to the electret on a side not facing the dielectric body. The first electrode is connected to a grounding terminal via a load. A second electrode may be connected to the dielectric body on a side not facing the electret. The second electrode may be directly connected to the grounding terminal.
    Type: Grant
    Filed: August 30, 2012
    Date of Patent: August 9, 2016
    Assignees: Rohm Co., Ltd., KANSAI UNIVERSITY
    Inventors: Seiji Aoyagi, Tomokazu Takahashi, Masato Suzuki, Yasuhiro Yoshikawa
  • Patent number: 9390766
    Abstract: There is a need to provide a semiconductor device and an electronic device capable of easily allowing a bypass capacitor to always improve noise suppression on a signal path in order to transmit a reference potential between chips in different power supply noise states. There is provided a specified signal path that connects a control chip and a memory chip mounted on a mounting substrate and transmits a reference potential generated from the control chip. A bypass capacitor is connected to the specified signal path only at a connecting part where a distance from a reference potential pad of the memory chip to the connecting part along the specified signal path is shorter than a distance from a reference potential pad of the control chip to the connecting part along the specified signal path.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: July 12, 2016
    Assignee: Renesas Electronics Corporation
    Inventors: Yasuhiro Yoshikawa, Motoo Suwa, Kazuhiko Hiranuma
  • Patent number: 9287804
    Abstract: A power generation apparatus includes a dielectric, a movable member being opposed to the dielectric with a predetermined distance, and an electret and an opposing electrode that are formed on the surface of the movable member facing the dielectric so as to generate a fringe electric field penetrating the dielectric between the two electrodes. When the volume occupancy of the dielectric between the electret and the opposing electrode varies in accordance with a displacement of the movable member, the power generation apparatus outputs the electric charge induced in the opposing electrode as electric current.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: March 15, 2016
    Assignees: Rohm Co., Ltd., KANSAI UNIVERSITY
    Inventors: Seiji Aoyagi, Yasuhiro Yoshikawa
  • Patent number: 9158717
    Abstract: There is a need to alleviate or reduce crosstalk between bonding wires or wires in a device substrate. One selection configuration divides a multiplexed terminal group into three groups according to functions differently from another selection configuration that divides the multiplexed terminal group into two groups. A first multi-pin semiconductor device is configured such that the groups are successively arranged along one edge of the chip. The first semiconductor device connects with a second semiconductor device via a multiplexed terminal group. The multiplexed terminal group includes first through third interface terminal groups that differ from each other in signal input/output configurations.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: October 13, 2015
    Assignee: Renesas Electronics Corporation
    Inventors: Yasuhiro Yoshikawa, Motoo Suwa
  • Publication number: 20150234758
    Abstract: There is a need to alleviate or reduce crosstalk between bonding wires or wires in a device substrate. One selection configuration divides a multiplexed terminal group into three groups according to functions differently from another selection configuration that divides the multiplexed terminal group into two groups. A first multi-pin semiconductor device is configured such that the groups are successively arranged along one edge of the chip. The first semiconductor device connects with a second semiconductor device via a multiplexed terminal group. The multiplexed terminal group includes first through third interface terminal groups that differ from each other in signal input/output configurations.
    Type: Application
    Filed: April 24, 2015
    Publication date: August 20, 2015
    Inventors: Yasuhiro YOSHIKAWA, Motoo SUWA
  • Patent number: 9087160
    Abstract: There is a need to alleviate or reduce crosstalk between bonding wires or wires in a device substrate. One selection configuration divides a multiplexed terminal group into three groups according to functions differently from another selection configuration that divides the multiplexed terminal group into two groups. A first multi-pin semiconductor device is configured such that the groups are successively arranged along one edge of the chip. The first semiconductor device connects with a second semiconductor device via a multiplexed terminal group. The multiplexed terminal group includes first through third interface terminal groups that differ from each other in signal input/output configurations.
    Type: Grant
    Filed: October 23, 2013
    Date of Patent: July 21, 2015
    Assignee: Renesas Electronics Corporation
    Inventors: Yasuhiro Yoshikawa, Motoo Suwa
  • Patent number: 8963700
    Abstract: A wireless communication device includes an electric power generation unit, an electric power accumulation unit, a sensor supplied with the electric power from the electric power accumulation unit, and a wireless communication unit supplied with the electric power from the electric power accumulation unit, for transmitting the sensed information outputted by the sensor to outside of the wireless communication device. A storage unit stores the sensed information outputted by the sensor. A control unit controls operation of the wireless communication unit, the sensor and/or the storage unit in accordance, at least in part, with the electric power accumulated in the electric power accumulation.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: February 24, 2015
    Assignee: Rohm Co., Ltd.
    Inventors: Masahide Tanaka, Yasuhiro Yoshikawa
  • Publication number: 20140232237
    Abstract: A power generation apparatus includes a dielectric, a movable member being opposed to the dielectric with a predetermined distance, and an electret and an opposing electrode that are formed on the surface of the movable member facing the dielectric so as to generate a fringe electric field penetrating the dielectric between the two electrodes. When the volume occupancy of the dielectric between the electret and the opposing electrode varies in accordance with a displacement of the movable member, the power generation apparatus outputs the electric charge induced in the opposing electrode as electric current.
    Type: Application
    Filed: April 23, 2014
    Publication date: August 21, 2014
    Applicants: Rohm Co., Ltd., KANSAI UNIVERSITY
    Inventors: Seiji Aoyagi, Yasuhiro Yoshikawa
  • Patent number: 8742644
    Abstract: A power generation apparatus includes a dielectric, a movable member being opposed to the dielectric with a predetermined distance, and an electret and an opposing electrode that are formed on the surface of the movable member facing the dielectric so as to generate a fringe electric field penetrating the dielectric between the two electrodes. When the volume occupancy of the dielectric between the electret and the opposing electrode varies in accordance with a displacement of the movable member, the power generation apparatus outputs the electric charge induced in the opposing electrode as electric current.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: June 3, 2014
    Assignees: Rohm Co., Ltd., Kansai University
    Inventors: Seiji Aoyagi, Yasuhiro Yoshikawa
  • Publication number: 20140115199
    Abstract: There is a need to alleviate or reduce crosstalk between bonding wires or wires in a device substrate. One selection configuration divides a multiplexed terminal group into three groups according to functions differently from another selection configuration that divides the multiplexed terminal group into two groups. A first multi-pin semiconductor device is configured such that the groups are successively arranged along one edge of the chip. The first semiconductor device connects with a second semiconductor device via a multiplexed terminal group. The multiplexed terminal group includes first through third interface terminal groups that differ from each other in signal input/output configurations.
    Type: Application
    Filed: October 23, 2013
    Publication date: April 24, 2014
    Applicant: Renesas Electronics Corporation
    Inventors: Yasuhiro Yoshikawa, Motoo Suwa
  • Patent number: 8553059
    Abstract: A thermal printer head that is highly efficient to manufacture is provided, which includes: a first substrate (11), including a first main surface (110), a first inclined surface (111) that is inclined relative to the first main surface (110), and a second inclined surface (112) that is inclined relative to the first main surface (110); an electrode layer (3), laminated on the first main surface (110), the first inclined surface (111), and the second inclined surface (112); a resistor layer (4), having a plurality of heat dissipation portions (41) respectively laminated on the first inclined surface (111) and crossing separated parts in the electrode layer (3); a driving integrated circuit (IC), for controlling the current passing through each heat dissipation portion (41); and a plurality of wires (81), respectively joined to the driving IC and joined to the second inclined surface (112) through the electrode layer (3).
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: October 8, 2013
    Assignee: Rohm Co., Ltd.
    Inventors: Shigeyoshi Ono, Yasuhiro Yoshikawa
  • Publication number: 20130241723
    Abstract: Vibration electric power generation is carried out by a relative parallel movement of a ferroelectric member including floating electrodes arranged in parallel and a movable member including electrets maintaining a surface electric potential of approximately 100 volts at a temperature of 100° C. and opposed electrode portions alternately arranged, the ferroelectric member and the movable member being provided in a tire.
    Type: Application
    Filed: May 10, 2013
    Publication date: September 19, 2013
    Applicant: Rohm Co., Ltd.
    Inventors: Masahide Tanaka, Yasuhiro Yoshikawa
  • Patent number: 8456291
    Abstract: Vibration electric power generation is carried out by a relative parallel movement of a ferroelectric member including floating electrodes arranged in parallel and a movable member including electrets maintaining a surface electric potential of approximately 100 volts at a temperature of 100° C. and opposed electrode portions alternately arranged, the ferroelectric member and the movable member being provided in a tire.
    Type: Grant
    Filed: August 19, 2010
    Date of Patent: June 4, 2013
    Assignee: Rohm Co., Ltd.
    Inventors: Masahide Tanaka, Yasuhiro Yoshikawa