Patents by Inventor Tsuyoshi Nakagawa

Tsuyoshi Nakagawa 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: 20200155459
    Abstract: A tablet includes a base body and multiple medicine layers stacked inside the base body with a gap between each other in a first direction and including a drug active ingredient. The base body includes multiple inner layers located between adjacent medicine layers in the first direction. The inner layers have a solubility lower than that of the medicine layers.
    Type: Application
    Filed: November 19, 2019
    Publication date: May 21, 2020
    Inventors: Takahiro HIRAO, Fumio NARUSE, Hiroo NOGAMI, Tsuyoshi NAKAGAWA
  • Publication number: 20200106349
    Abstract: A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction. The stator includes a stator core including an annular core back and teeth extending in the radial direction from the core back, bobbins attachable to the teeth, respectively, in the radial direction, a coil wire wound around the bobbin, the bobbin including a cylindrical tube portion extending in the radial direction and a protruding piece that protrudes in the radial direction from an upper end, close to the core back, of the tube portion and is fixed to the core back, and an annular fixing member covering the core back and the protruding piece from an upper side.
    Type: Application
    Filed: September 20, 2019
    Publication date: April 2, 2020
    Inventors: Norihisa IMAIZUMI, Tsuyoshi NAKAGAWA
  • Publication number: 20200106310
    Abstract: A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction. The stator includes an annular core back and a stator core including teeth extending from the core back to one side in the radial direction. The stator core includes a laminated steel sheet in which electromagnetic steel sheets are laminated in a direction of the central axis. Each of the electromagnetic steel sheets includes a caulking dowel portion to which the adjacent electromagnetic steel sheets are connected by press-fitting. The caulking dowel portion includes a protrusion protruding from the core back to another side in the radial direction.
    Type: Application
    Filed: September 20, 2019
    Publication date: April 2, 2020
    Inventors: Norihisa IMAIZUMI, Tsuyoshi NAKAGAWA
  • Publication number: 20200106309
    Abstract: A motor includes a rotor rotatable about a central axis, and a stator opposing the rotor in a radial direction. The stator includes an annular core back and a stator core including teeth extending from the core back in the radial direction. The stator core includes a laminated steel sheet in which electromagnetic steel sheets are laminated in a direction of the central axis, a first anti-rust layer covering a surface of the laminated steel sheet, and a second anti-rust layer covering a surface of the first anti-rust layer. The first anti-rust layer includes an impregnated adhesive, and the second anti-rust layer includes a solid lubricant.
    Type: Application
    Filed: September 20, 2019
    Publication date: April 2, 2020
    Inventors: Norihisa IMAIZUMI, Tsuyoshi NAKAGAWA
  • Publication number: 20190374118
    Abstract: In a method for measuring a biometric signal of a subject, the biometric signal is repeatedly detected using a biometric sensor and a noise intensity of noise contaminating the detected biometric signal is detected. Further, in the method, a signal intensity of the detected biometric signal is adjusted if the signal intensity meets an intensity change condition. If the detected noise intensity is greater than a noise threshold, adjustment of the signal intensity is withheld.
    Type: Application
    Filed: June 6, 2019
    Publication date: December 12, 2019
    Inventors: Tsuyoshi NAKAGAWA, Masanobu SUZUKI, Teruhiko KAMEOKA
  • Publication number: 20180159384
    Abstract: A motor includes a rotor including a shaft arranged along a central axis extending in one direction; and a stator arranged radially outside of the rotor. The stator includes a stator core including an annular core back portion arranged to surround the rotor, and a plurality of tooth portions arranged to extend radially inward from the core back portion; and coils each of which is wound around a separate one of the tooth portions. The tooth portions are arranged side by side along a circumferential direction. An inner edge of the core back portion is in the shape of a polygon when viewed along an axial direction. The inner edge includes rounded corners each of which is arranged between portions of the inner edge to which circumferentially adjacent ones of the tooth portions are joined. When D1 denotes an inside diameter of the stator core, D2 denotes a minimum outside diameter of the stator core, and N denotes the number of tooth portions, the ratio of D1 to D2 is greater than 0.
    Type: Application
    Filed: December 7, 2016
    Publication date: June 7, 2018
    Inventors: Shigeaki TERASHITA, Noriyoshi KIKUCHI, Tsuyoshi NAKAGAWA
  • Patent number: 9814396
    Abstract: In a pulse wave signal processor, a first filter attenuates a frequency component in an acquired pulse wave signal or in a differentiated pulse wave signal, and the attenuated frequency component is more than or equal to a first frequency. A second filter attenuates a frequency component in the acquired pulse wave signal, and the attenuated frequency component is less than the first frequency and more than or equal to a second frequency. A characteristic-point extractor extracts a characteristic point that exists in each single pulse of the pulse wave signal filtered by the second filter, and a signal separator partitioning the pulse wave signal or the differentiated signal filtered by the first filter into sections such that each section includes one of the extracted characteristic points. The partitioned sections are overlapped such that the characteristic points are coincident with each other, and arithmetically averaged.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: November 14, 2017
    Assignee: DENSO CORPORATION
    Inventors: Kouki Futatsuyama, Taiji Kawachi, Tsuyoshi Nakagawa
  • Publication number: 20170105634
    Abstract: In a pulse wave signal processor, a first filter attenuates a frequency component in an acquired pulse wave signal or in a differentiated pulse wave signal, and the attenuated frequency component is more than or equal to a first frequency. A second filter attenuates a frequency component in the acquired pulse wave signal, and the attenuated frequency component is less than the first frequency and more than or equal to a second frequency. A characteristic-point extractor extracts a characteristic point that exists in each single pulse of the pulse wave signal filtered by the second filter, and a signal separator partitioning the pulse wave signal or the differentiated signal filtered by the first filter into sections such that each section includes one of the extracted characteristic points. The partitioned sections are overlapped such that the characteristic points are coincident with each other, and arithmetically averaged.
    Type: Application
    Filed: October 10, 2016
    Publication date: April 20, 2017
    Inventors: Kouki FUTATSUYAMA, Taiji KAWACHI, Tsuyoshi NAKAGAWA
  • Patent number: 9289236
    Abstract: This mucosa separation apparatus includes a first insertion portion inserted to the interior of a subject, an expansion portion disposed on a head portion of the first insertion portion, and which expands by infusion of a fluid, a passage formed within the first insertion portion and connected to the expansion portion, for supplying the fluid to the expansion portion, and a curving portion which makes a head portion of an instrument inserted to the interior of the subject curve with respect to a part of the instrument which is closer to a base portion of the instrument than the head portion thereof.
    Type: Grant
    Filed: November 26, 2007
    Date of Patent: March 22, 2016
    Assignee: OLYMPUS CORPORATION
    Inventors: Akihito Sadamasa, Yasuo Miyano, Yutaka Yanuma, Ichiro Takahashi, Kenji Shibaki, Tsutomu Nakamura, Tsuyoshi Nakagawa, Yasuhito Kura
  • Publication number: 20150105675
    Abstract: A sphygmomanometer includes an operation part, a pulse wave sensor that detects a pulse wave signal indicative of a pulse wave in a part of the patient body that is operating the operation part. A first manometer measures a blood pressure based on the pulse wave signal, and a second manometer measures the blood pressure with a cuff that is worn by the patient. A cuff wearing detector detects a wearing of the cuff by the patient. A controller measures the blood pressure with the first manometer when the operation part is operated long enough for a detection of the pulse wave signal and measures the blood pressure with the second manometer when the cuff wearing detector detects that the cuff is worn and that the operation part is being operated.
    Type: Application
    Filed: October 9, 2014
    Publication date: April 16, 2015
    Inventors: Tsuyoshi NAKAGAWA, Taiji KAWACHI, Kouki FUTATSUYAMA, Hiroshi YAMAKITA
  • Patent number: 8920181
    Abstract: A coaxial connector includes an insulation housing having a receptacle opening portion for receiving a coaxial plug; an outer conductive member; a first terminal disposed below the receptacle opening portion; a second terminal disposed below the first terminal; and an insulation member disposed between the first terminal and the second terminal. The first terminal includes a first contact portion for contacting with a central conductive member of the coaxial plug. The second terminal includes a second contact portion for contacting with the central conductive member. The first terminal further includes a third contact portion, and the second terminal further includes a fourth contact portion for contacting with the third contact portion when the coaxial plug is not inserted into the insulation housing.
    Type: Grant
    Filed: May 10, 2013
    Date of Patent: December 30, 2014
    Assignee: Hirose Electric Co., Ltd.
    Inventors: Kohei Hida, Tsuyoshi Nakagawa
  • Patent number: 8870782
    Abstract: In a pulse wave analyzer, an ECG signal and a pulse wave signal are detected from an object to be analyzed. A plurality of feature points are extracting from the acquired ECG signal, the feature points appearing in a waveform of the ECG signal. The acquired pulse wave signal is segmented into a plurality of pulse wave signal pieces based on times at which the feature points appear. Each of the pulse wave signal pieces is segmented every heart beat. A reference pulse wave is calculated based on the plurality of pulse wave signal pieces, by multiplying the pulse wave signal pieces by coefficients and averaging the pulse wave signal pieces multiplied by the coefficients. The reference pulse wave is used to estimate the blood pressure of the object.
    Type: Grant
    Filed: September 29, 2011
    Date of Patent: October 28, 2014
    Assignee: DENSO CORPORATION
    Inventors: Kouki Futatsuyama, Harutsugu Fukumoto, Tsuyoshi Nakagawa, Naoki Mitsumoto, Tatsuya Ikegami
  • Patent number: 8774896
    Abstract: An electrocardiograph includes first and second induction electrodes, a signal difference generation section, an electrocardiographic detection section, a signal applying section, and a contact detection section. The signal difference generation section generates a potential difference between a signal from the first induction electrode and a signal from the second induction electrode as a signal difference. The electrocardiographic detection section detects an electrocardiographic complex of a subject based on the signal difference. The signal applying section applies a first signal to the first induction electrode and a second signal to the second induction electrode. The first signal has a property different from the electrocardiographic complex. The second signal has a property different from the electrocardiographic complex and the first signal. The contact detection section detects a contact state of the subject to the first and second induction electrodes based on the signal difference.
    Type: Grant
    Filed: August 28, 2012
    Date of Patent: July 8, 2014
    Assignee: DENSO CORPORATION
    Inventors: Kouki Futatsuyama, Tsuyoshi Nakagawa, Harutsugu Fukumoto
  • Publication number: 20130303008
    Abstract: A coaxial connector includes an insulation housing having a receptacle opening portion for receiving a coaxial plug; an outer conductive member; a first terminal disposed below the receptacle opening portion; a second terminal disposed below the first terminal; and an insulation member disposed between the first terminal and the second terminal. The first terminal includes a first contact portion for contacting with a central conductive member of the coaxial plug. The second terminal includes a second contact portion for contacting with the central conductive member. The first terminal further includes a third contact portion, and the second terminal further includes a fourth contact portion for contacting with the third contact portion when the coaxial plug is not inserted into the insulation housing.
    Type: Application
    Filed: May 10, 2013
    Publication date: November 14, 2013
    Applicant: Hirose Electric Co., Ltd.
    Inventors: Kohei HIDA, Tsuyoshi NAKAGAWA
  • Patent number: 8548578
    Abstract: A living body state monitor apparatus includes: a living body information acquisition device to acquire living body information containing an electrocardiography waveform and a pulse waveform from a user; an irregular heartbeat detection section to detect an irregular heartbeat from the electrocardiography waveform; and a pulse wave feature quantity extraction section to extract a pulse wave feature quantity from a pulse wave corresponding to the irregular heartbeat. Further, a living body state determination section is included to determine a danger degree on user's living body state using both of (A) information on kind and/or continued time period of an irregular heartbeat detected by the irregular heartbeat detection section, and (B) a pulse wave feature quantity extracted by the pulse wave feature quantity extraction section, and/or a variation of the extracted pulse wave feature quantity.
    Type: Grant
    Filed: October 13, 2011
    Date of Patent: October 1, 2013
    Assignees: DENSO CORPORATION, Toyota Jidosha Kabushiki Kaisha, Nippon Medical School Foundation
    Inventors: Shinya Matsunaga, Shinji Nanba, Tsuyoshi Nakagawa, Kouki Futatsuyama, Takao Katoh, Hiroshige Murata, Hiroshi Hayashi, Motohisa Osaka, Minoru Makiguchi
  • Patent number: 8414328
    Abstract: A coaxial connector to be attached to a coaxial change-over switch includes an insulated connector housing; an outer connector conductor provided outside the insulated connector housing and capable of connecting to an outer conductor of a coaxial cable; and a contact provided in the insulated connector housing to be movable for connecting to a center conductor of the coaxial cable. The contact has a first portion including a distal end portion and a second portion connected to the first portion via a bent section. The contact is mounted on a mounting section of the insulated connector housing, and is supported in a cantilever state at the second portion. The distal end portion is elastically displaced in a direction opposite to an attaching direction of the coaxial change-over switch when the distal end portion contacts with the coaxial change-over switch.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: April 9, 2013
    Assignee: Hirose Electric Co., Ltd.
    Inventors: Daisuke Yamakoshi, Tsuyoshi Nakagawa
  • Publication number: 20130060120
    Abstract: An electrocardiograph includes first and second induction electrodes, a signal difference generation section, an electrocardiographic detection section, a signal applying section, and a contact detection section. The signal difference generation section generates a potential difference between a signal from the first induction electrode and a signal from the second induction electrode as a signal difference. The electrocardiographic detection section detects an electrocardiographic complex of a subject based on the signal difference. The signal applying section applies a first signal to the first induction electrode and a second signal to the second induction electrode. The first signal has a property different from the electrocardiographic complex. The second signal has a property different from the electrocardiographic complex and the first signal. The contact detection section detects a contact state of the subject to the first and second induction electrodes based on the signal difference.
    Type: Application
    Filed: August 28, 2012
    Publication date: March 7, 2013
    Applicant: DENSO CORPORATION
    Inventors: Kouki FUTATSUYAMA, Tsuyoshi Nakagawa, Harutsugu Fukumoto
  • Publication number: 20120095358
    Abstract: A living body state monitor apparatus includes: a living body information acquisition device to acquire living body information containing an electrocardiography waveform and a pulse waveform from a user; an irregular heartbeat detection section to detect an irregular heartbeat from the electrocardiography waveform; and a pulse wave feature quantity extraction section to extract a pulse wave feature quantity from a pulse wave corresponding to the irregular heartbeat. Further, a living body state determination section is included to determine a danger degree on user's living body state using both of (A) information on kind and/or continued time period of an irregular heartbeat detected by the irregular heartbeat detection section, and (B) a pulse wave feature quantity extracted by the pulse wave feature quantity extraction section, and/or a variation of the extracted pulse wave feature quantity.
    Type: Application
    Filed: October 13, 2011
    Publication date: April 19, 2012
    Applicants: DENSO CORPORATION, Nippon Medical School Foundation, TOYOTA JIDOSHA KABUSHIKI KAISHA
    Inventors: Shinya MATSUNAGA, Shinji Nanba, Tsuyoshi Nakagawa, Kouki Futatsuyama, Takao Katoh, Hiroshige Murata, Hiroshi Hayashi, Motohisa Osaka, Minoru Makiguchi
  • Patent number: 8038450
    Abstract: A coaxial connector for connecting a coaxial plug includes an insulation housing including an insertion opening portion and a pressing deformation portion situated above the insertion opening portion; an outer conductive member including a pressing portion for pressing the pressing deformation portion; a stationary terminal including a contact portion; and a movable terminal fitted into the insertion opening portion and including a fixed portion and an elastic portion. The elastic portion is separated from the contact portion so that the movable terminal is electrically disconnected from the stationary terminal when the coaxial plug is inserted into the insulation housing. The elastic portion contacts with the central conductive member so that the movable terminal is electrically connected to the central conductive member when the coaxial plug is inserted into the insulation housing.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: October 18, 2011
    Assignee: Hirose Electric Co., Ltd
    Inventor: Tsuyoshi Nakagawa
  • Patent number: 8038597
    Abstract: The instrument for an endoscope is an instrument for an endoscope is able to move reciprocally in the channel of the endoscope along a guide wire, and includes: a sheath portion having a guide lumen into which the guide wire is inserted and another lumen disposed along the guide lumen. The proximal end of the sheath portion is bifurcated into the first sheath portion having the guide lumen and the second sheath portion having the other lumen.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: October 18, 2011
    Assignee: Olympus Medical Systems Corp.
    Inventors: Tsuyoshi Nakagawa, Yutaka Yanuma, Yasushi Okoshi, Isao Sasaki