Patents by Inventor Natsuki Watanabe

Natsuki Watanabe 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: 20240326682
    Abstract: A sprinkling system at a work site includes: a power device that is mounted on a haul vehicle and generates power for driving a traveling device of the haul vehicle by causing hydrogen to react with oxygen; a storage unit that stores a sprinkling position of the work site; a sprinkling device that is mounted on the haul vehicle and sprays water generated in the power device; and a sprinkling control unit that outputs a control command in such a manner that the sprinkling device sprinkles water to the sprinkling position.
    Type: Application
    Filed: September 27, 2022
    Publication date: October 3, 2024
    Applicant: Komatsu Ltd.
    Inventors: Natsuki Watanabe, Yuta Hoshino
  • Patent number: 11889829
    Abstract: A liquid for cryopreserving a cell and a liquid for administration of a mammalian cell capable of cryopreserving a mammalian cell and effectively suppressing cell death after thawing, and a method for cryopreserving a mammalian cell using the cell cryopreservation liquid. The liquid is an isotonic solution that includes 2.0 to 6.0% (w/v) of trehalose or a derivative thereof, or a salt of the trehalose or the derivative, 4.0 to 7.0% (w/v) of dextran or a derivative thereof, or a salt of the dextran or the derivative, and DMSO or glycerin.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: February 6, 2024
    Assignee: OTSUKA PHARMACEUTICAL FACTORY, INC.
    Inventors: Masuhiro Nishimura, Natsuki Watanabe, Yasutaka Fujita, Tamaki Wada
  • Publication number: 20230318382
    Abstract: A stator capable of controlling an increase in a size of a motor is provided. The stator includes a stator core and coils. The stator core includes mounted teeth on which the coils are mounted and non-mounted teeth on which the coils are not mounted. Each of the coils includes a coil end portion that protrudes in an axial direction from the stator core, and a terminal portion connected to a connecting wire that connects the coils to each other. The terminal portion protrudes in a circumferential direction from the coil end portion in such a manner as to overlap with at least a part of the non-mounted teeth in the axial direction.
    Type: Application
    Filed: September 17, 2021
    Publication date: October 5, 2023
    Applicant: Komatsu Ltd.
    Inventors: Hiroki Hijikata, Natsuki Watanabe
  • Publication number: 20230297017
    Abstract: A pressure switching mechanism includes a rotatable support, a biasing member, and a switching rotation member. The rotatable support rotates around a first rotation shaft to support a contact member such that the contact member is movable in a direction toward or away from a contacted member. The biasing member has one end connected to a biased portion of the rotatable support, which is located on a side opposite the first rotation shaft with respect to a virtual line passing through a contact portion between the contact member and the contacted member, and applies a biasing force to the rotatable support. The switching rotation member is connected to another end of the biasing member opposite the one end of the biasing member, rotates around a second rotation shaft, and has a rotation operating end which is on a side opposite the second rotation shaft with respect to the virtual line.
    Type: Application
    Filed: March 14, 2023
    Publication date: September 21, 2023
    Applicant: Ricoh Company, Ltd.
    Inventors: Natsuki WATANABE, Hitoshi FUJIWARA, Shigeo NANNO, Yuusuke FURUICHI
  • Publication number: 20230283134
    Abstract: A stator includes: a stator core having teeth and slots; and coils including outer coils arranged at a first distance from a center of the stator core and inner coils arranged at a second distance shorter than the first distance, wherein the slots include first slots that the outer coils are arranged and second slots that the inner coils are arranged, a depth of the first slots is deeper than that of the second slots, each of coil sets is formed of each of the inner coil and the outer coil arranged to overlap with a part of the inner coil, phases of the inner and outer coils are different in each of the coil sets, the coil sets include first, second, and third coil sets, and a combination of the phases of the inner and outer coils varies among the first, second and third coil sets.
    Type: Application
    Filed: September 22, 2021
    Publication date: September 7, 2023
    Applicant: Komatsu Ltd.
    Inventors: Hiroki Hijikata, Natsuki Watanabe
  • Publication number: 20220294283
    Abstract: A coil includes a first coil piece, and a second coil piece coupled to the first coil piece. Each of the first coil piece and the second coil piece has a center portion arranged in a slot of a stator core, and an end portion protruding in an axial direction from the stator core. In the coil end portion, the end portion of the first coil piece and at least a part of the end portion of the second coil piece are arranged in the axial direction.
    Type: Application
    Filed: August 24, 2020
    Publication date: September 15, 2022
    Applicant: Komatsu Ltd.
    Inventors: Hiroki Hijikata, Natsuki Watanabe, Teiichirou Chiba
  • Publication number: 20220263356
    Abstract: A motor includes a stator core, a coil disposed in slots of the stator core, and a rotor facing the stator core. When the number of poles of the rotor is P, the number of the slots of the stator core is S, and a natural number is N, conditions of P=7×N and S=12×N are satisfied.
    Type: Application
    Filed: August 20, 2020
    Publication date: August 18, 2022
    Applicant: Komatsu Ltd.
    Inventors: Hiroki Hijikata, Natsuki Watanabe, Teiichirou Chiba
  • Publication number: 20220255386
    Abstract: A coil includes a center portion arranged in a slot of a stator core, and an end portion protruding in an axial direction from the stator core. The end portion has a first portion, and a second portion thinner than the thickness of the first portion.
    Type: Application
    Filed: August 24, 2020
    Publication date: August 11, 2022
    Applicant: Komatsu Ltd.
    Inventors: Hiroki Hijikata, Natsuki Watanabe, Teiichirou Chiba
  • Patent number: 11372355
    Abstract: A fixing device includes a fixing rotator, a pressure rotator, a belt holder, a pressure gear, a thermal equalizer, a nip formation pad, and a support. The thermal equalizer includes a first face facing a fixing nip between the fixing rotator and the pressure rotator, and second and third faces bending and extending from upstream end and downstream end, respectively, of the first face in a direction of rotation of the fixing rotator. An upstream boundary portion between the first face and the second face and a downstream boundary portion between the first face and the third face each include, at least in a longitudinal end portion of the thermal equalizer proximate to the pressure gear, an inclined portion inclined to narrow the first face toward a longitudinal end of the thermal equalizer and having an angle of inclination not greater than 3°.
    Type: Grant
    Filed: August 3, 2021
    Date of Patent: June 28, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventor: Natsuki Watanabe
  • Publication number: 20220145235
    Abstract: An object of the present invention is to provide a novel preservation solution for preserving mammalian cells over a long period of time in a non-frozen state. Ascorbic acid and/or niacin is added to an isotonic solution to prepare a preservation solution. The preservation solution is mixed with platelets and preserved under shaking. Decrease in the functions and viability of the platelets can thereby be suppressed for at least 10 days. Alternatively, the aforementioned preservation solution is mixed with mesenchymal stem cells, megakaryocytes, or T cells and preserved in a non-frozen state. Decrease in the functions and viability of these cells can thereby be suppressed for at least several days to several tens of days.
    Type: Application
    Filed: March 13, 2020
    Publication date: May 12, 2022
    Applicants: MEGAKARYON CORPORATION, OTSUKA PHARMACEUTICAL FACTORY, INC.
    Inventors: Junko TOMIZUKA, Tomohiro SHIGEMORI, Natsuki WATANABE, Taichi TAKENAWA, Chikage SHIRAKAWA, Masuhiro NISHIMURA, Yasutaka FUJITA, Osamu SAWAMOTO
  • Publication number: 20220066366
    Abstract: A fixing device includes a fixing rotator, a pressure rotator, a belt holder, a pressure gear, a thermal equalizer, a nip formation pad, and a support. The thermal equalizer includes a first face facing a fixing nip between the fixing rotator and the pressure rotator, and second and third faces bending and extending from upstream end and downstream end, respectively, of the first face in a direction of rotation of the fixing rotator. An upstream boundary portion between the first face and the second face and a downstream boundary portion between the first face and the third face each include, at least in a longitudinal end portion of the thermal equalizer proximate to the pressure gear, an inclined portion inclined to narrow the first face toward a longitudinal end of the thermal equalizer and having an angle of inclination not greater than 3°.
    Type: Application
    Filed: August 3, 2021
    Publication date: March 3, 2022
    Inventor: Natsuki WATANABE
  • Patent number: 11237507
    Abstract: A fixing device includes a heater including a first sealing portion and a second sealing portion disposed at a first lateral end and a second lateral end of a tube in a longitudinal direction of a fixing rotator, respectively. The first sealing portion includes a first inboard end distanced from a first lateral end of a heat generating portion with a first distance in the longitudinal direction of the fixing rotator. The second sealing portion includes a second inboard end distanced from a second lateral end of the heat generating portion with a second distance in the longitudinal direction of the fixing rotator. The second distance is smaller than the first distance. A driving force transmitter transmits a driving force to the fixing rotator or an opposed rotator and is disposed in a first lateral end side of the fixing device where the first sealing portion is disposed.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: February 1, 2022
    Assignee: RICOH COMPANY, LTD.
    Inventor: Natsuki Watanabe
  • Publication number: 20210165349
    Abstract: A fixing device includes a heater including a first sealing portion and a second sealing portion disposed at a first lateral end and a second lateral end of a tube in a longitudinal direction of a fixing rotator, respectively. The first sealing portion includes a first inboard end distanced from a first lateral end of a heat generating portion with a first distance in the longitudinal direction of the fixing rotator. The second sealing portion includes a second inboard end distanced from a second lateral end of the heat generating portion with a second distance in the longitudinal direction of the fixing rotator. The second distance is smaller than the first distance. A driving force transmitter transmits a driving force to the fixing rotator or an opposed rotator and is disposed in a first lateral end side of the fixing device where the first sealing portion is disposed.
    Type: Application
    Filed: October 19, 2020
    Publication date: June 3, 2021
    Applicant: Ricoh Company, Ltd.
    Inventor: Natsuki WATANABE
  • Publication number: 20200291358
    Abstract: An object of the present invention is to provide stem cells having excellent proliferation ability and differentiation ability. The present invention relates to stem cells isolated from a neonatal pig, and a preparation method therefor.
    Type: Application
    Filed: September 6, 2018
    Publication date: September 17, 2020
    Applicant: OTSUKA PHARMACEUTICAL FACTORY, INC.
    Inventors: Masuhiro NISHIMURA, Yasutaka FUJITA, Natsuki WATANABE, Luan NGUYEN, Shinichi MATSUMOTO
  • Publication number: 20200077643
    Abstract: A liquid for cryopreserving a cell and a liquid for administration of a mammalian cell capable of cryopreserving a mammalian cell and effectively suppressing cell death after thawing, and a method for cryopreserving a mammalian cell using the cell cryopreservation liquid. The liquid is an isotonic solution that includes 2.0 to 6.0% (w/v) of trehalose or a derivative thereof, or a salt of the trehalose or the derivative, 4.0 to 7.0% (w/v) of dextran or a derivative thereof, or a salt of the dextran or the derivative, and DMSO or glycerin.
    Type: Application
    Filed: November 8, 2017
    Publication date: March 12, 2020
    Applicant: OTSUKA PHARMACEUTICAL FACTORY, INC.
    Inventors: Masuhiro NISHIMURA, Natsuki WATANABE, Yasutaka FUJITA, Tamaki WADA
  • Patent number: 10558154
    Abstract: An image forming apparatus includes a pressing device, an apparatus body, an opening body, and a vibration insulator. The pressing device housed in the apparatus body is configured to press a pressing body to a pressing target body. The opening body is configured to open and close to the apparatus body. The opening body presses a pressing target portion of the apparatus body, at a first pressing portion to cancel a pressing state of the pressing device by opening of the opening body and at a second pressing portion to enter the pressing state of the pressing device by closing of the opening body. The vibration insulator is provided on at least one of the pressing target portion and the second pressing portion, at a contact portion at which the pressing target portion contacts the second pressing portion when the first pressing portion cancels the pressing state.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: February 11, 2020
    Assignee: RICOH COMPANY, LTD.
    Inventors: Hiroshi Kajiyama, Naoki Iwaya, Hitoshi Fujiwara, Takuya Seshita, Takahiro Imada, Yoshiharu Takahashi, Natsuki Watanabe
  • Publication number: 20200033764
    Abstract: An image forming apparatus includes a pressing device, an apparatus body, an opening body, and a vibration insulator. The pressing device housed in the apparatus body is configured to press a pressing body to a pressing target body. The opening body is configured to open and close to the apparatus body. The opening body presses a pressing target portion of the apparatus body, at a first pressing portion to cancel a pressing state of the pressing device by opening of the opening body and at a second pressing portion to enter the pressing state of the pressing device by closing of the opening body. The vibration insulator is provided on at least one of the pressing target portion and the second pressing portion, at a contact portion at which the pressing target portion contacts the second pressing portion when the first pressing portion cancels the pressing state.
    Type: Application
    Filed: July 25, 2019
    Publication date: January 30, 2020
    Applicant: Ricoh Company, Ltd.
    Inventors: Hiroshi Kajiyama, Naoki Iwaya, Hitoshi Fujiwara, Takuya Seshita, Takahiro Imada, Yoshiharu Takahashi, Natsuki Watanabe
  • Patent number: 10527981
    Abstract: A fixing device includes a rotatable pressing roller, a fixing rotator to rotate in contact with the pressing roller, a nip formation pad, and a slide sheet disposed between the nip formation pad and the fixing rotator. The slide sheet includes a base material layer made of a woven fabric of spun yarn. In the base material layer, a distance between adjacent spun yarns is equal to or less than 0.4 times a width of the spun yarn in a cross-section of the slide sheet in a direction of slide movement of the fixing rotator, and, in a cross-section of the slide sheet in a longitudinal direction of the slide sheet and a direction perpendicular to the slide movement of the fixing rotator, a thickness of the spun yarn is equal to or greater than 0.2 times a width of the spun yarn.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: January 7, 2020
    Assignee: Ricoh Company, Ltd.
    Inventors: Yutaka Naitoh, Hiroshi Yoshinaga, Daisuke Inoue, Natsuki Watanabe, Takahiro Imada
  • Publication number: 20190377286
    Abstract: A fixing device includes a rotatable pressing roller, a fixing rotator to rotate in contact with the pressing roller, a nip formation pad, and a slide sheet disposed between the nip formation pad and the fixing rotator. The slide sheet includes a base material layer made of a woven fabric of spun yarn. In the base material layer, a distance between adjacent spun yarns is equal to or less than 0.4 times a width of the spun yarn in a cross-section of the slide sheet in a direction of slide movement of the fixing rotator, and, in a cross-section of the slide sheet in a longitudinal direction of the slide sheet and a direction perpendicular to the slide movement of the fixing rotator, a thickness of the spun yarn is equal to or greater than 0.2 times a width of the spun yarn.
    Type: Application
    Filed: April 30, 2019
    Publication date: December 12, 2019
    Inventors: Yutaka Naitoh, Hiroshi Yoshinaga, Daisuke Inoue, Natsuki Watanabe, Takahiro Imada
  • Patent number: 10211688
    Abstract: A motor includes: an annular stator attached in a housing; a rotor that is disposed in the stator and is rotatably supported by the housing; and a plurality of permanent magnets embedded in a rotor core of the rotor, in which the rotor core has embedding holes respectively in which the permanent magnets are fitted, and each of the embedding holes is formed with filling holes each continuous in an axial direction of the rotor core at diagonal positions of each of the permanent magnets.
    Type: Grant
    Filed: June 6, 2014
    Date of Patent: February 19, 2019
    Assignee: Komatsu Ltd.
    Inventors: Natsuki Watanabe, Teiichirou Chiba, Yasuhiko Matsuki