Patents by Inventor Kazuhiro Ikeda

Kazuhiro Ikeda 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: 20240400981
    Abstract: A cell population comprises a large number of cell aggregations and a hydrogel encapsulating the large number of cell aggregations. A coefficient of variation obtained by dividing a standard deviation of sizes of the large number of cell aggregations by a mean value of the sizes of the large number of cell masses is 0.50 or less. Alternatively and/or in addition there to, a coefficient of variation obtained by dividing a standard deviation of aspect ratios of shapes of the large number of cell aggregations by a mean value of the aspect ratios of the shapes of the large number of cell aggregations is 0.30 or less.
    Type: Application
    Filed: July 7, 2022
    Publication date: December 5, 2024
    Applicant: CellFiber Co., Ltd.
    Inventors: Kazuhiro IKEDA, Yuki TAKAGI, Lucas Siqueira TRINDADE
  • Publication number: 20240305733
    Abstract: A communication device includes: a signal reception circuit to receive a differential signal and convert the differential signal into binary data; a squelch detection circuit to compare an amplitude level of the differential signal with threshold voltages to detect presence or absence of a signal and detect a non-squelch state and a squelch state; a start pattern detection circuit to enter a receivable state in response to a predetermined start pattern based on the differential signal; a register that stores a squelch setting value associated with the threshold voltages; a DC voltage selection circuit to select two DC voltages in accordance with the squelch setting value, and supply the two DC voltages to the squelch detection circuit; and a squelch setting control circuit to change the squelch setting value to increase or decrease the squelch setting value in steps and sequentially set the squelch setting value in the register.
    Type: Application
    Filed: March 1, 2024
    Publication date: September 12, 2024
    Applicant: Ricoh Company, Ltd.
    Inventors: Tomohiko Kaneko, Kenichi Watanabe, Kazuhiro Ikeda
  • Publication number: 20240240157
    Abstract: Provided is a structure with which a lung progenitor cells can proliferate while retaining an ability to differentiate into an alveolar epithelial cell and an airway epithelial cell. A structure of the present invention includes a core portion that includes a cell population, and an outer shell portion that covers at least a part of the core portion and contains a hydrogel. The structure has a storage elastic modulus of 150 Pa or more and/or the hydrogel contains alginic acid. The cell population contains an alveolar epithelial cell, an airway epithelial cell, and/or a progenitor cell thereof.
    Type: Application
    Filed: July 15, 2022
    Publication date: July 18, 2024
    Applicants: CellFiber Co., Ltd., HiLung Inc.
    Inventors: Shimpei GOTOH, Satoshi IKEO, Yuki YAMAMOTO, Kazuhiro IKEDA, Yu YANAGISAWA, Tetsuharu NAGAMOTO
  • Publication number: 20240148736
    Abstract: The present invention relates a combination drug for treating a renal cancer and a potentiator for therapeutic effects of a tyrosine kinase inhibitor. The combination drug includes a combination of a tyrosine kinase inhibitor, and a dipeptidyl peptidase-4 inhibitor. The potentiator includes a dipeptidyl peptidase-4 inhibitor. The potentiator enhances therapeutic effects of a tyrosine kinase inhibitor on a renal cancer.
    Type: Application
    Filed: December 13, 2021
    Publication date: May 9, 2024
    Inventors: Satoshi INOUE, Kazuhiro IKEDA, Kuniko INOUE, Shuhei KAMADA, Satoru KAWAKAMI
  • Patent number: 11858856
    Abstract: Provided is polycrystalline diamond having a diamond single phase as basic composition, in which the polycrystalline diamond includes a plurality of crystal grains and contains boron, hydrogen, oxygen, and the remainder including carbon and trace impurities; the boron is dispersed in the crystal grains at an atomic level, and greater than or equal to 90 atomic % of the boron is present in an isolated substitutional type; hydrogen and oxygen are present in an isolated substitutional type or an interstitial type in the crystal grains; each of the crystal grains has a grain size of less than or equal to 500 nm; and the polycrystalline diamond has a surface covered with a protective film.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: January 2, 2024
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kazuhiro Ikeda, Keiko Arimoto, Katsuko Yamamoto, Hitoshi Sumiya
  • Publication number: 20230381375
    Abstract: Provided is a novel structure containing mesenchymal stem cells that can be used in various applications. A hydrogel fiber (10) comprises a hydrogel (14) that contains mesenchymal stem cells.
    Type: Application
    Filed: October 29, 2021
    Publication date: November 30, 2023
    Applicants: CellFiber Co., Ltd., SAPPORO MEDICAL UNIVERSITY
    Inventors: Kanna NAGAISHI, Kazuhiro IKEDA
  • Patent number: 11731561
    Abstract: A step device for a vehicle includes a movable step supported under a door opening, and a coupling member supported by a sliding door that opens and closes in a vehicle front-rear direction with a shifting zone in a vehicle width direction. The movable step is provided with a guide rail that opens downward and extends in the vehicle front-rear direction. The coupling member includes: a fixed member fixed to the sliding door; an arm member coupled to the fixed member; a guide roller disposed inside the guide rail; and an urging member configured to apply to the arm member an urging force in a direction in which the guide roller turns upward.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: August 22, 2023
    Assignees: AISIN CORPORATION, TOYOTA SHATAI KABUSHIKI KAISHA
    Inventors: Yoshihiro Oji, Keisuke Nomura, Shinji Kazama, Kazuhiro Hibi, Kazuhiro Ikeda
  • Publication number: 20230203434
    Abstract: A scaffold for culturing a cell comprises: a hydrogel; and a plasma-derived or platelet-derived component or a fibrin-containing material adhered to the hydrogel.
    Type: Application
    Filed: February 28, 2023
    Publication date: June 29, 2023
    Applicants: CELLFIBER CO., LTD., LEAVE A NEST CO, LTD.
    Inventors: Kazuhiro IKEDA, Lucas Siqueira TRINDADE
  • Patent number: 11518312
    Abstract: A step device for a vehicle includes a movable step and a coupling member. The movable step includes a guide rail. The coupling member is configured to cause the movable step to move from a deployed position to a retracted position as a engaging part comes into sliding contact with a side wall of the guide rail that is located on an inner side in a vehicle width direction and, while pressing the side wall, moves inside the guide rail in a direction of closing a sliding door. The guide rail is configured such that a terminal end region on a closing side including a terminal end position at which the engaging part is located when the sliding door is fully closed constitutes a closing-side free running zone in which the engaging part does not press either of the side walls.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: December 6, 2022
    Assignees: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA SHATAI KABUSHIKI KAISHA
    Inventors: Yoshihiro Oji, Keisuke Nomura, Shinji Kazama, Kazuhiro Hibi, Kazuhiro Ikeda
  • Patent number: 11485290
    Abstract: A step device for a vehicle includes: a movable step supported under a door opening; a coupling member that, in a state of being supported by a sliding door, engages with the movable step to move the movable step in a vehicle width direction in conjunction with opening and closing of the sliding door; a support arm that has a first pivot-joint point relative to a vehicle body and a second pivot-joint point relative to the movable step, and supports the movable step toward an upper side; and a pressure bearing member that is provided at a position between the first pivot-joint point and the second pivot-joint point and bears the load of the support arm by coming into sliding contact with the support arm.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: November 1, 2022
    Assignees: AISIN CORPORATION, TOYOTA SHATAI KABUSHIKI KAISHA
    Inventors: Yoshihiro Oji, Keisuke Nomura, Shinji Kazama, Kazuhiro Hibi, Kazuhiro Ikeda
  • Patent number: 11433819
    Abstract: A step device for a vehicle includes: a movable step supported under a door opening; a coupling member that moves the movable step in a vehicle width direction in conjunction with opening and closing of a sliding door; and a sub-step that is disposed under the door opening. The movable step moves under the sub-step toward an outer side in the vehicle width direction so as to be disposed in a deployed position in which the movable step protrudes from the sub-step toward the outer side in the vehicle width direction. The sub-step has an overlapping region that covers an upper side of the movable step in a state where the movable step is disposed in the deployed position.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: September 6, 2022
    Assignees: AISIN CORPORATION, TOYOTA SHATAI KABUSHIKI KAISHA
    Inventors: Yoshihiro Oji, Keisuke Nomura, Shinji Kazama, Kazuhiro Hibi, Kazuhiro Ikeda
  • Patent number: 11433818
    Abstract: A step device for a vehicle includes: a movable step supported under a door opening; a coupling member that, in a state of being supported by a sliding door, engages with the movable step to move the movable step in a vehicle width direction in conjunction with opening and closing of the sliding door; a support arm that has a first pivot-joint point relative to a vehicle body and a second pivot-joint point relative to the movable step, and supports the movable step toward an upper side; and a cover member that is fixed to a lower surface of the vehicle body so as to define a housing space opening toward an outer side in the vehicle width direction and to cover the lower side of the support arm when the movable step is in a retracted position.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: September 6, 2022
    Assignees: AISIN CORPORATION, TOYOTA SHATAI KABUSHIKI KAISHA
    Inventors: Yoshihiro Oji, Keisuke Nomura, Shinji Kazama, Kazuhiro Hibi, Kazuhiro Ikeda
  • Patent number: 11427475
    Abstract: Provided is polycrystalline diamond having a diamond single phase as basic composition, in which the polycrystalline diamond includes a plurality of crystal grains and contains boron, at least either of nitrogen and silicon, and a remainder including carbon and trace impurities; the boron is dispersed in the crystal grains at an atomic level, and greater than or equal to 90 atomic % of the boron is present in an isolated substitutional type; the nitrogen and the silicon are present in an isolated substitutional type or an interstitial type in the crystal grains; each of the crystal grains has a grain size of less than or equal to 500 nm; and the polycrystalline diamond has a surface covered with a protective film.
    Type: Grant
    Filed: November 29, 2017
    Date of Patent: August 30, 2022
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Kazuhiro Ikeda, Keiko Arimoto, Katsuko Yamamoto, Hitoshi Sumiya
  • Publication number: 20220259541
    Abstract: A cell fiber production system comprises: a first flow path through which a first fluid containing a cell flows; a second flow path for allowing a second fluid for preparing a hydrogel to converge around the first fluid in the first flow path; and an ejection port through which at least the first fluid and the second fluid are discharged together. The cell fiber production system is constructed that, at a start stage of production of a cell fiber, the first fluid is delivered after the second fluid reaches at least a convergence point between the first flow path and the second flow path.
    Type: Application
    Filed: November 4, 2019
    Publication date: August 18, 2022
    Applicant: CELLFIBER CO., LTD.
    Inventors: Hiroaki ONOE, Kazuhiro IKEDA, Kayoko SHOJI
  • Patent number: 11181590
    Abstract: A diamond magnetic sensor including diamond containing at least one NV? center, a microwave generator which emits microwaves to the diamond, an excitation light generator which emits excitation light to the NV? center of the diamond, and a fluorescence sensor which receives fluorescence produced from the NV? center of the diamond includes a pattern measurement apparatus which measures a temporal change pattern of magnetic field intensity based on variation in fluorescence intensity sensed by the fluorescence sensor.
    Type: Grant
    Filed: February 21, 2018
    Date of Patent: November 23, 2021
    Assignee: Sumitomo Electric Industries, Ltd.
    Inventors: Yoshiki Nishibayashi, Kazuhiro Ikeda
  • Patent number: 11022811
    Abstract: An optical amplifier includes a polarization splitter, a polarization rotator, first and second optical couplers, and first and second semiconductor optical amplifying devices. The TE polarized wave of light split by the polarization splitter is input to a first input port of the first optical coupler. The TM polarized wave of the split light is converted into a TE polarized wave by the polarization rotator to be input to a second input port of the first optical coupler. First light and second light output from a first output port and a second output port of the first optical coupler are amplified by the first semiconductor optical amplifying device and the second semiconductor optical amplifying device to be input to a first input port and a second input port of the second optical coupler, respectively. Third light is output from an output port of the second optical coupler.
    Type: Grant
    Filed: August 6, 2018
    Date of Patent: June 1, 2021
    Assignees: FUJITSU LIMITED, NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Suguru Akiyama, Kazuhiro Ikeda, Takeshi Matsumoto, Hitoshi Kawashima, Keijiro Suzuki, Ken Tanizawa
  • Publication number: 20210070226
    Abstract: A step device for a vehicle includes a movable step supported under a door opening, and a coupling member supported by a sliding door that opens and closes in a vehicle front-rear direction with a shifting zone in a vehicle width direction. The movable step is provided with a guide rail that opens downward and extends in the vehicle front-rear direction. The coupling member includes: a fixed member fixed to the sliding door; an arm member coupled to the fixed member; a guide roller disposed inside the guide rail; and an urging member configured to apply to the arm member an urging force in a direction in which the guide roller turns upward.
    Type: Application
    Filed: September 4, 2020
    Publication date: March 11, 2021
    Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA SHATAI KABUSHIKI KAISHA
    Inventors: Yoshihiro OJI, Keisuke NOMURA, Shinji KAZAMA, Kazuhiro HIBI, Kazuhiro IKEDA
  • Publication number: 20210070224
    Abstract: A step device for a vehicle includes: a movable step supported under a door opening; a coupling member that, in a state of being supported by a sliding door, engages with the movable step to move the movable step in a vehicle width direction in conjunction with opening and closing of the sliding door; a support arm that has a first pivot-joint point relative to a vehicle body and a second pivot-joint point relative to the movable step, and supports the movable step toward an upper side; and a cover member that is fixed to a lower surface of the vehicle body so as to define a housing space opening toward an outer side in the vehicle width direction and to cover the lower side of the support arm when the movable step is in a retracted position.
    Type: Application
    Filed: September 4, 2020
    Publication date: March 11, 2021
    Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA SHATAI KABUSHIKI KAISHA
    Inventors: Yoshihiro OJI, Keisuke NOMURA, Shinji KAZAMA, Kazuhiro HIBI, Kazuhiro IKEDA
  • Publication number: 20210070227
    Abstract: A step device for a vehicle includes a movable step and a coupling member. The movable step includes a guide rail. The coupling member is configured to cause the movable step to move from a deployed position to a retracted position as a engaging part comes into sliding contact with a side wall of the guide rail that is located on an inner side in a vehicle width direction and, while pressing the side wall, moves inside the guide rail in a direction of closing a sliding door. The guide rail is configured such that a terminal end region on a closing side including a terminal end position at which the engaging part is located when the sliding door is fully closed constitutes a closing-side free running zone in which the engaging part does not press either of the side walls.
    Type: Application
    Filed: September 4, 2020
    Publication date: March 11, 2021
    Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA SHATAI KABUSHIKI KAISHA
    Inventors: Yoshihiro OJI, Keisuke NOMURA, Shinji KAZAMA, Kazuhiro HIBI, Kazuhiro IKEDA
  • Publication number: 20210070228
    Abstract: A step device for a vehicle includes: a movable step supported under a door opening; a coupling member that, in a state of being supported by a sliding door, engages with the movable step to move the movable step in a vehicle width direction in conjunction with opening and closing of the sliding door; a support arm that has a first pivot-joint point relative to a vehicle body and a second pivot-joint point relative to the movable step, and supports the movable step toward an upper side; and a pressure bearing member that is provided at a position between the first pivot-joint point and the second pivot-joint point and bears the load of the support arm by coming into sliding contact with the support arm.
    Type: Application
    Filed: September 4, 2020
    Publication date: March 11, 2021
    Applicants: AISIN SEIKI KABUSHIKI KAISHA, TOYOTA SHATAI KABUSHIKI KAISHA
    Inventors: Yoshihiro OJI, Keisuke NOMURA, Shinji KAZAMA, Kazuhiro HIBI, Kazuhiro IKEDA