Patents by Inventor Kazuya Nagase

Kazuya Nagase 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: 20240099156
    Abstract: According to one embodiment, a magnetic memory device includes an electrode, and a magnetoresistance effect element provided on the electrode. The electrode includes a first electrode portion and a second electrode portion provided between the magnetoresistance effect element and the first electrode portion and containing a metal element selected from molybdenum (Mo) and ruthenium (Ru).
    Type: Application
    Filed: September 14, 2023
    Publication date: March 21, 2024
    Applicant: Kioxia Corporation
    Inventors: Kazuya SAWADA, Toshihiko NAGASE, Kenichi YOSHINO, Hyungjun CHO, Naoki AKIYAMA, Takuya SHIMANO, Tadaaki OIKAWA
  • Publication number: 20240030333
    Abstract: A nitride semiconductor device includes an electron transit layer, an electron supply layer, a gate layer, a gate electrode, a passivation layer, a source electrode, and a drain electrode. The gate layer includes a ridge including an upper surface of the gate layer, a source-side extension smaller in thickness than the ridge, and a drain-side extension smaller in thickness than the ridge. The source-side extension includes a first step portion including an upper surface parallel to a bottom surface of the gate layer and a first intermediate portion connecting the first step portion to the ridge. The drain-side extension includes a second step portion including an upper surface parallel to the bottom surface of the gate layer and a second intermediate portion connecting the second step portion to the ridge. The first intermediate portion has a cross-sectional area that is greater than that of the second intermediate portion.
    Type: Application
    Filed: July 12, 2023
    Publication date: January 25, 2024
    Applicant: ROHM CO., LTD.
    Inventor: Kazuya NAGASE
  • Publication number: 20230420517
    Abstract: A nitride semiconductor device includes a source electrode that is in contact with a second nitride semiconductor layer via a first opening portion and with which a portion is formed above a passivation film and a drain electrode that is in contact with the second nitride semiconductor layer via a second opening portion and with which a portion is formed above the passivation film such as to oppose the source electrode across a ridge portion, and the third nitride semiconductor layer has, between a ridge portion side end of the first opening portion and a first opening portion end of the ridge portion and/or between a ridge portion side end of the drain electrode and a second opening portion end of the ridge portion, an extension portion that extends outward from a portion below a thickness intermediate position of at least one side surface of the ridge portion.
    Type: Application
    Filed: October 7, 2021
    Publication date: December 28, 2023
    Applicant: ROHM CO., LTD.
    Inventors: Hirotaka OTAKE, Manabu YANAGIHARA, Kazuya NAGASE, Shinya TAKADO
  • Patent number: 11737735
    Abstract: A physiological information system includes a patient monitor configured to acquire a vital sign based on a vital sign signal of a subject, and an ultrasonic measuring apparatus configured to acquire ultrasonic images based on ultrasonic waves transmitted toward the subject and received from the subject. The patient monitor includes a storage device configured to store measured data of the vital signs in association with measurement dates and times, and to store the ultrasonic images in association with image capture timings, and a controller configured to display a screen on a display section based on data, including the measured data and the ultrasonic images, stored in the storage device.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: August 29, 2023
    Assignee: NIHON KOHDEN CORPORATION
    Inventors: Mitsuhiro Oura, Sou Kumagai, Wataru Matsuzawa, Nobuyuki Yasumaru, Kazuya Nagase, Hiroshi Torigai, Naoki Fukushima
  • Publication number: 20220401007
    Abstract: A muscle relaxation monitoring apparatus includes a calibration processing section. The calibration processing section is configured to: set an initial stimulation current value as a starting stimulation current value; determine, as a current value variable process, one of a first and a second current value variable process; detect, as a first peak value and a second peak value, amplitude peak values of an electric signal; and detect a stimulation current value of a maximal stimulation of a subject, based on a result of a comparison of the first peak value and the second peak value, and acquires a stimulation current value that is obtained by adding a step current value to the stimulation current value, as the stimulation current value of a supramaximal stimulation of the subject.
    Type: Application
    Filed: October 23, 2020
    Publication date: December 22, 2022
    Applicants: NIHON KOHDEN CORPORATION, SHUNICHI TAKAGI
    Inventors: Hiroshi YOSHIHARA, Shigeyoshi KITAMURA, Kazuya NAGASE, Shunji IWATA, Shunichi TAKAGI
  • Publication number: 20220401008
    Abstract: A stimulation current value that causes the supramaximal stimulation according to a subject in the muscle relaxation state is detected. A muscle relaxation monitoring apparatus includes a calibration processing section 4 for performing a calibration process that electrically stimulates a nerve which is an observation portion of a subject, by a predetermined stimulation current value at a predetermined stimulation timing, and that acquires a stimulation current value of a supramaximal stimulation exceeding a maximal stimulation of the subject, based on an amplitude peak value of an electric signal that is based on a stimulation response of a muscle due to the electrical stimulation.
    Type: Application
    Filed: October 23, 2020
    Publication date: December 22, 2022
    Applicants: NIHON KOHDEN CORPORATION
    Inventors: Hiroshi YOSHIHARA, Shigeyoshi KITAMURA, Kazuya NAGASE, Shunji IWATA, Shunichi TAKAGI
  • Patent number: 11464496
    Abstract: A patient monitor that acquires and displays first vital sign information and second vital sign information of a subject includes an event detection unit that is configured to detect an activation start event for starting an activation process of biological information processing software which performs a process pertaining to the second vital sign information and an activating event for activating the biological information processing software and a software control unit that causes the biological information processing software to be in a standby state, in which a part of the activation process of the biological information processing software has been performed, when the activation start event is detected by the event detection unit, and causes the biological information processing software to be in an active state from the standby state when the activating event is detected by the event detection unit.
    Type: Grant
    Filed: December 6, 2016
    Date of Patent: October 11, 2022
    Assignee: NIHON KOHDEN CORPORATION
    Inventors: Mitsuhiro Oura, Sou Kumagai, Wataru Matsuzawa, Nobuyuki Yasumaru, Kazuya Nagase, Hiroshi Torigai, Naoki Fukushima
  • Publication number: 20220209001
    Abstract: A nitride semiconductor device 1 includes a first nitride semiconductor layer 4 that constitutes an electron transit layer, a second nitride semiconductor layer 5 that is formed on the first nitride semiconductor layer and constitutes an electron supply layer, and a gate portion 20 that is formed on the second nitride semiconductor layer. The gate portion 20 includes a semiconductor gate layer 21 of a ridge shape that is formed on the second nitride semiconductor layer and is constituted of a nitride semiconductor containing an acceptor type impurity and a gate electrode 22 that is formed on the semiconductor gate layer. The semiconductor gate layer is constituted of a gate layer main body portion 211 that is formed on the second nitride semiconductor layer and an upper protruding portion 212 that is formed on a width intermediate portion of an upper surface of the gate layer main body portion, and the gate electrode is formed on a top surface of the upper protruding portion.
    Type: Application
    Filed: March 6, 2020
    Publication date: June 30, 2022
    Inventors: Hirotaka OTAKE, Kentaro CHIKAMATSU, Shinya TAKADO, Kazuya NAGASE
  • Publication number: 20220117581
    Abstract: A patient monitor and physiological information measurement system are provided. The patient monitor for acquiring vital signals that are based on vital signs of a subject, and an ultrasonic image that is based on an ultrasonic wave which is transmitted to and received from the subject configured to be connectable to a plurality of displays, and includes a display controller that is configured to control the plurality of displays to display information including the vital signs in at least one of the displays.
    Type: Application
    Filed: January 8, 2020
    Publication date: April 21, 2022
    Inventors: Mitsuhiro OURA, Sou KUMAGAI, Wataru MATSUZAWA, Nobuyuki YASUMARU, Kazuya NAGASE, Hiroshi TORIGAI, Naoki FUKUSHIMA
  • Patent number: 11204619
    Abstract: A patient monitor that acquires a vital sign through a measurement sensor, and that is to be connected to an external measurement apparatus for measuring another vital sign, includes a master clock that is disposed in the patient monitor, and that manages common time information, a first operating system that manages first time information, and a second operating system that manages second time information, and that transmits and receives data to and from the external measurement apparatus. When a predetermined event occurs, the first operating system reads the common time information from the master clock, and updates the first time information. When the predetermined event occurs, the second operating system reads the common time information from the master clock, updates the second time information, and notifies the external measurement apparatus of the updated second time information or the common time information.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: December 21, 2021
    Assignee: NIHON KOHDEN CORPORATION
    Inventors: Mitsuhiro Oura, Sou Kumagai, Wataru Matuzawa, Nobuyuki Yasumaru, Kazuya Nagase, Hiroshi Torigai, Naoki Fukushima
  • Patent number: 11166665
    Abstract: An index output device for appropriately evaluating the conditions of the patient under anesthesia. An index output device 100 includes an electric stimulation section 170, an acquisition section 180, a calculation section, and an output section. The electric stimulation section 170 is configured to apply an electric stimulus to a living body. The acquisition section 180 is configured to acquire a plurality of physiological responses from the living body in response to the common electric stimulus applied to the living body by the electric stimulation section 170. The calculation section is configured to calculate, from the plurality of responses of the living body acquired by the acquisition section, an index related to a level of muscular relaxation (TOF) and an index related to a level of analgesia (PIR). The output section is configured to output the indexes calculated by the calculation section.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: November 9, 2021
    Assignee: Nihon Kohden Corporation
    Inventors: Teiji Ukawa, Kazuya Nagase
  • Publication number: 20210315542
    Abstract: A physiological information measurement apparatus is configured to acquire a vital sign that is based on a physiological signal of a subject, and a captured image or a signal for generating the captured image that is acquired from an imaging device. The physiological information measurement apparatus includes a storage unit configured to store therein an electronic file, and a control unit configured to display at least one of the captured image and information of the vital sign on a display unit. At an image recording timing when an image recording instruction is provided, the control unit stores both the captured image and the information of the vital sign in the storage unit in an image format.
    Type: Application
    Filed: July 26, 2019
    Publication date: October 14, 2021
    Applicant: NIHON KOHDEN CORPORATION
    Inventors: Mitsuhiro OURA, Sou KUMAGAI, Wataru MATSUZAWA, Nobuyuki YASUMARU, Kazuya NAGASE, Hiroshi TORIGAI, Naoki FUKUSHIMA
  • Publication number: 20210128008
    Abstract: A muscle relaxation monitoring apparatus includes: a stimulating circuit that stimulates a nerve of a living body; a signal detecting circuit that detects an electric signal generated by a muscle reacting to the stimulation performed by the stimulating circuit; a reaction time calculating circuit that calculates a reaction time which elapses from the stimulation of the nerve by the stimulating circuit until the electric signal is detected by the signal detecting circuit; and a relaxation degree determining circuit that determines a muscle relaxation degree of the living body based on the length of the reaction time calculated by the reaction time calculating circuit.
    Type: Application
    Filed: October 21, 2020
    Publication date: May 6, 2021
    Applicants: NIHON KOHDEN CORPORATION, Shunichi TAKAGI, KAWASAKI GAKUEN EDUCATIONAL FOUNDATION
    Inventors: Hiroshi YOSHIHARA, Shigeyoshi KITAMURA, Kazuya NAGASE, Shunji IWATA, Shunichi TAKAGI, Hideki NAKATSUKA
  • Publication number: 20200359999
    Abstract: A physiological information system includes a patient monitor configured to acquire a vital sign based on a vital sign signal of a subject, and an ultrasonic measuring apparatus configured to acquire ultrasonic images based on ultrasonic waves transmitted toward the subject and received from the subject. The patient monitor includes a storage device configured to store measured data of the vital signs in association with measurement dates and times, and to store the ultrasonic images in association with image capture timings, and a controller configured to display a screen on a display section based on data, including the measured data and the ultrasonic images, stored in the storage device.
    Type: Application
    Filed: November 13, 2018
    Publication date: November 19, 2020
    Inventors: Mitsuhiro OURA, Sou KUMAGAI, Wataru MATSUZAWA, Nobuyuki YASUMARU, Kazuya NAGASE, Hiroshi TORIGAI, Naoki FUKUSHIMA
  • Patent number: 10804384
    Abstract: A semiconductor device includes: a back barrier layer containing AlXGa(1-X)N (0<X?1); an electron transit layer containing AlaInbGa(1-a-b)N (0?a+b?1) and formed on the back barrier layer; a top barrier layer containing AlYGa(1-Y)N (0<Y?1) and formed on the electron transit layer; an electron supply layer containing AlZGa(1-Z)N (0<Z?1) and formed on the top barrier layer, the electron supply layer having an opening to expose the top barrier layer; a two-dimensional electron gas region formed in an area of a surface layer portion of the electron transit layer, the area opposing the electron supply layer with the top barrier layer interposed between the electron supply layer and the area; a gate insulating layer formed in the opening of the electron supply layer; and a gate electrode layer formed on the gate insulating layer and opposing the electron transit layer with the gate insulating layer interposed therebetween.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: October 13, 2020
    Assignee: ROHM CO., LTD.
    Inventors: Kazuya Nagase, Shinya Takado, Minoru Akutsu
  • Publication number: 20200275908
    Abstract: An ultrasonic measurement system includes a display device configured to display an ultrasonic image and an ultrasonic probe electrically connectable to the display device. The ultrasonic probe includes an image capturing unit joined to or detachably attached to a first cable, the image capturing unit comprising a first optical lens to capture an image of a nearby object, and a probe head joined to or detachably attached to the first cable, the probe head being configured to transmit an ultrasonic beam toward a body surface of a subject and to receive a reflected wave from the body surface.
    Type: Application
    Filed: November 9, 2018
    Publication date: September 3, 2020
    Inventors: Mitsuhiro OURA, Sou KUMAGAI, Wataru MATSUZAWA, Nobuyuki YASUMARU, Kazuya NAGASE, Hiroshi TORIGAI, Naoki FUKUSHIMA, Masashi SATO, Takuya AIZAWA
  • Patent number: 10411617
    Abstract: A dielectric elastomer motor includes an artificial muscle and a conversion mechanism cooperating with the artificial muscle. The artificial muscle includes a dielectric elastomer film or layer having a first surface and a second surface opposite to the first surface. First and second electrodes are attached to the first surface and the second surface of the dielectric elastomer film, respectively. First and second bases are attached to the dielectric elastomer so as to be spaced apart from each other. The first base and the second base are capable of reciprocation relative to each other upon change in size of the dielectric elastomer. The conversion mechanism converts the reciprocation of the bases to pivotal or rotational movement. The dielectric elastomer receives voltage application with a predetermined timing via the first and the second electrodes.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: September 10, 2019
    Assignees: KUREHA ELASTOMER CO., LTD.
    Inventors: Seiki Chiba, Mikio Waki, Yoshinori Tanaka, Kuniyoshi Okamoto, Kazuya Nagase, Naoaki Tsurumi, Syo Kurita, Makoto Takasugi, Nobuhiro Miyagi
  • Publication number: 20190207022
    Abstract: A semiconductor device includes: a back barrier layer containing AlXGa(1-X)N (0<X?1); an electron transit layer containing AlaInbGa(1-a-b)N (0?a+b?1) and formed on the back barrier layer; a top barrier layer containing AlYGa(1-Y)N (0<Y?1) and formed on the electron transit layer; an electron supply layer containing AlZGa(1-Z)N (0<Z?1) and formed on the top barrier layer, the electron supply layer having an opening to expose the top barrier layer; a two-dimensional electron gas region formed in an area of a surface layer portion of the electron transit layer, the area opposing the electron supply layer with the top barrier layer interposed between the electron supply layer and the area; a gate insulating layer formed in the opening of the electron supply layer; and a gate electrode layer formed on the gate insulating layer and opposing the electron transit layer with the gate insulating layer interposed therebetween.
    Type: Application
    Filed: December 26, 2018
    Publication date: July 4, 2019
    Inventors: Kazuya NAGASE, Shinya TAKADO, Minoru AKUTSU
  • Publication number: 20190156935
    Abstract: A patient monitor is connectable to an imaging unit. The patient monitor includes a folder creating section and a file operating section. When a first event occurs, the folder creating section newly creates a first folder in a first hierarchy of a file system. When a second event occurs, the folder creating section newly creates a second folder in the first folder that is last created. The file operating section stores an image file relating to image information that is supplied from the imaging unit, in the second folder last created by the folder creating section.
    Type: Application
    Filed: November 16, 2018
    Publication date: May 23, 2019
    Inventors: Mitsuhiro OURA, Sou KUMAGAI, Wataru MATUZAWA, Nobuyuki YASUMARU, Kazuya NAGASE, Hiroshi TORIGAI, Naoki FUKUSHIMA
  • Publication number: 20190059808
    Abstract: An index output device for appropriately evaluating the conditions of the patient under anesthesia. An index output device 100 includes an electric stimulation section 170, an acquisition section 180, a calculation section, and an output section. The electric stimulation section 170 is configured to apply an electric stimulus to a living body. The acquisition section 180 is configured to acquire a plurality of physiological responses from the living body in response to the common electric stimulus applied to the living body by the electric stimulation section 170. The calculation section is configured to calculate, from the plurality of responses of the living body acquired by the acquisition section, an index related to a level of muscular relaxation (TOF) and an index related to a level of analgesia (PIR). The output section is configured to output the indexes calculated by the calculation section.
    Type: Application
    Filed: February 3, 2017
    Publication date: February 28, 2019
    Inventors: Teiji UKAWA, Kazuya NAGASE