Patents by Inventor Masato Ibuki

Masato Ibuki 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).

  • Patent number: 11746331
    Abstract: An object of the present invention is to provide an endodermal cell population for obtaining optimal somatic cells as cell therapy preparations. The endodermal cell population of the present invention has a reduced content proportion of undifferentiated cells in the cell population and contains endodermal cells differentiable into optimal somatic cells as cell therapy preparations. Further, a somatic cell derived from the endodermal cell population of the present invention has excellent therapeutic effects as a cell therapy preparation.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: September 5, 2023
    Assignees: NATIONAL CENTER FOR GLOBAL HEALTH AND MEDICINE
    Inventors: Masato Ibuki, Hitoshi Okochi, Shigeharu Yabe
  • Publication number: 20230174945
    Abstract: A method for inducing differentiation into pancreatic ? cells includes: a step (a) of culturing endodermal cells, which have been induced to differentiate from pluripotent stem cells, in the presence of a bone morphogenetic protein (BMP) signaling inhibitor, and retinoic acid or a retinoic acid analog to induce differentiation into primitive gut tube (PGT) cells; a step (b) of culturing the primitive gut tube (PGT) cells to induce differentiation into pancreatic endocrine precursor (EP) cells; and a step (c) of culturing the pancreatic endocrine precursor (EP) cells to induce differentiation into pancreatic ? cells, in which the step (b) and the step (c) are performed in the absence of ascorbic acid.
    Type: Application
    Filed: March 18, 2021
    Publication date: June 8, 2023
    Applicants: KANEKA CORPORATION, NATIONAL CENTER FOR GLOBAL HEALTH AND MEDICINE
    Inventors: Keiichi KIMURA, Masato IBUKI, Hitoshi OKOCHI, Shigeharu YABE
  • Publication number: 20230094568
    Abstract: Pluripotent stem cells are suspension-cultured with the undifferentiated state thereof maintained. In suspension culture of pluripotent stem cells, the undifferentiated state is maintained by the presence of a PKC inhibitor, especially, a PKC? inhibitor, and a tankyrase inhibitor (TNKS inhibitor).
    Type: Application
    Filed: February 12, 2021
    Publication date: March 30, 2023
    Applicants: KANEKA CORPORATION, RIKEN
    Inventors: Kazuhiro TAKEUCHI, Masato IBUKI, Yohei HAYASHI, Mami TAKASAKI, Sho KAMBAYASHI, Yoshikazu KAWAI
  • Publication number: 20220267736
    Abstract: The present application provides: a suppressor of pluripotent stem cell aggregation for use in suspension culture of pluripotent stem cells, comprising a cell cycle arresting agent; a method for producing a pluripotent stem cell aggregate(s), comprising a step of subjecting pluripotent stem cells to suspension culture in a culture medium comprising the suppressor; a pluripotent stem cell aggregate obtained by the method; and a composition for culture of pluripotent stem cells comprising a cell aggregate(s) of pluripotent stem cells, a culture medium, and a cell cycle arresting agent. According to the method, it is possible, in suspension culture of pluripotent stem cells, to produce a cell aggregate(s) with high cell viability and appropriate size in a high yield while maintaining the undifferentiated state of the cells and suppressing the aggregation.
    Type: Application
    Filed: December 27, 2018
    Publication date: August 25, 2022
    Applicant: KANEKA CORPORATION
    Inventor: Masato IBUKI
  • Publication number: 20220195383
    Abstract: A method for producing pluripotent stem cells includes a step of performing suspension culture of pluripotent stem cells under a condition in which an amount, which is calculated by the following Equation (1), of WNT protein contained in a unit of a medium in contact with a unit area of a cell surface of a pluripotent stem cell is maintained at 2.9×102 ?g/mL·cm2 or less.
    Type: Application
    Filed: March 25, 2020
    Publication date: June 23, 2022
    Applicant: KANEKA CORPORATION
    Inventors: Kazuhiro TAKEUCHI, Masato IBUKI
  • Publication number: 20220169977
    Abstract: A production method for a cell population containing pluripotent stem cells includes: a step of culturing cell populations containing pluripotent stem cells; and a step of sorting out a cell population having the following characteristics (a) and (b) from the cell populations containing pluripotent stem cells. (a) A relative expression level of a LEF1 gene with respect to an expression level of a ?-actin gene is 5.5×10?4 or less in the cell population. (b) A percentage of cells positive for LEF1 is 55% or less in the cell population.
    Type: Application
    Filed: March 25, 2020
    Publication date: June 2, 2022
    Applicant: KANEKA CORPORATION
    Inventors: Kazuhiro TAKEUCHI, Masato IBUKI
  • Patent number: 11278793
    Abstract: A portable, handheld game console includes a main body incorporating a touch-sensitive display screen and a variety of input devices. The input devices can include shoulder buttons located on a peripheral side surface of the main body, as well as input devices located on the main body adjacent the touch-sensitive display screen.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: March 22, 2022
    Assignee: Nintendo Co., Ltd.
    Inventors: Hiroshi Yoshino, Keizo Ohta, Yoshitaka Yasumoto, Kenji Nishida, Kenichi Sugino, Masato Ibuki
  • Publication number: 20220017869
    Abstract: An object of the present invention is to provide an endodermal cell population for obtaining optimal somatic cells as cell therapy preparations. The endodermal cell population of the present invention has a reduced content proportion of undifferentiated cells in the cell population and contains endodermal cells differentiable into optimal somatic cells as cell therapy preparations. Further, a somatic cell derived from the endodermal cell population of the present invention has excellent therapeutic effects as a cell therapy preparation.
    Type: Application
    Filed: January 26, 2018
    Publication date: January 20, 2022
    Applicants: KANEKA CORPORATION, NATIONAL CENTER FOR GLOBAL HEALTH AND MEDICINE
    Inventors: Masato IBUKI, Hitoshi OKOCHI, Shigeharu YABE
  • Publication number: 20210246427
    Abstract: A problem addressed by the present invention is to provide a method for producing pancreatic ? cells from endothermal cells that have been induced to differentiate from pluripotent stein cells, wherein the method allows the production of pancreatic ? cells of high quality, and to provide pancreatic progenitor (PP) cells, pancreatic endocrine precursor (EP) cells, and pancreatic ? cells produced by the above-mentioned method.
    Type: Application
    Filed: April 26, 2019
    Publication date: August 12, 2021
    Applicants: KANEKA CORPORATION, NATIONAL CENTER FOR GLOBAL HEALTH AND MEDICINE
    Inventors: Masato IBUKI, Hirotoshi MATSUTA, Hitoshi OKOCHI, Shigeharu YABE, Satsuki FUKUDA
  • Publication number: 20210246429
    Abstract: A problem addressed by the present invention is to provide a method for producing primitive gut tube cells from endothermal cells that have been induced to differentiate from pluripotent stein cells, wherein the method allows the production of pancreatic ? cells of high quality. The present invention provides a method for producing primitive gut tube (PGT) cells comprising a step of culturing, in the absence of a bone morphogenetic protein (BMP) signaling inhibitor, endodermal cells that have been induced to differentiate from pluripotent stem cells.
    Type: Application
    Filed: April 26, 2019
    Publication date: August 12, 2021
    Applicants: KANEKA CORPORATION, NATIONAL CENTER FOR GLOBAL HEALTH AND MEDICINE
    Inventors: Masato IBUKI, Hirotoshi MATSUTA, Hitoshi OKOCHI, Shigeharu YABE, Satsuki FUKUDA
  • Publication number: 20210171885
    Abstract: A method for producing cell aggregates includes culturing cells while suspending the cells in a liquid culture medium comprising a lysophospholipid. A composition includes a lysophospholipid, wherein the composition is a liquid culture medium or a composition added to a liquid culture medium.
    Type: Application
    Filed: February 18, 2021
    Publication date: June 10, 2021
    Applicants: KANEKA CORPORATION, The University of Tokyo
    Inventors: Ikki Horiguchi, Yasuyuki Sakai, Masato Ibuki
  • Publication number: 20210062139
    Abstract: Provided is a means for appropriately controlling the size of cell aggregates without relying on mechanical/physical means. The present invention relates to a cell aggregation suppressor for use in suspension culture of cells, comprising an agonist of thrombin receptor. The present invention also relates to a method for producing cell aggregates, comprising a step of culturing cells in suspension in a culture medium comprising an agonist of thrombin receptor.
    Type: Application
    Filed: December 27, 2018
    Publication date: March 4, 2021
    Applicant: KANEKA CORPORATION
    Inventor: Masato IBUKI
  • Publication number: 20210062159
    Abstract: The present invention is directed to providing a means for appropriately controlling the size of cell aggregates without relying on mechanical/physical means. Specifically, the present invention relates to a cell aggregation promoter for use in suspension culture of cells, comprising an SRF inhibitor. The present invention also relates to a method for producing cell aggregates, comprising a step of culturing cells in suspension in a culture medium comprising an SRF inhibitor.
    Type: Application
    Filed: December 27, 2018
    Publication date: March 4, 2021
    Applicant: KANEKA CORPORATION
    Inventor: Masato IBUKI
  • Publication number: 20200316458
    Abstract: A portable, handheld game console includes a main body incorporating a touch-sensitive display screen and a variety of input devices. The input devices can include shoulder buttons located on a peripheral side surface of the main body, as well as input devices located on the main body adjacent the touch-sensitive display screen.
    Type: Application
    Filed: June 19, 2020
    Publication date: October 8, 2020
    Inventors: HIROSHI YOSHINO, KEIZO OHTA, YOSHITAKA YASUMOTO, KENJI NISHIDA, KENICHI SUGINO, MASATO IBUKI
  • Patent number: 10722783
    Abstract: A portable, handheld game console includes a main body incorporating a touch-sensitive display screen and a variety of input devices. The input devices can include shoulder buttons located on a peripheral side surface of the main body, as well as input devices located on the main body adjacent the touch-sensitive display screen.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: July 28, 2020
    Assignee: Nintendo Co., Ltd.
    Inventors: Hiroshi Yoshino, Keizo Ohta, Yoshitaka Yasumoto, Kenji Nishida, Kenichi Sugino, Masato Ibuki
  • Publication number: 20190366200
    Abstract: A portable, handheld game console includes a main body incorporating a touch-sensitive display screen and a variety of input devices. The input devices can include shoulder buttons located on a peripheral side surface of the main body, as well as input devices located on the main body adjacent the touch-sensitive display screen.
    Type: Application
    Filed: December 21, 2018
    Publication date: December 5, 2019
    Inventors: HIROSHI YOSHINO, KEIZO OHTA, YOSHITAKA YASUMOTO, KENJI NISHIDA, KENICHI SUGINO, MASATO IBUKI
  • Patent number: 10173132
    Abstract: A portable, handheld game console includes a main body incorporating a touch-sensitive display screen and a variety of input devices. The input devices can include shoulder buttons located on a peripheral side surface of the main body, as well as input devices located on the main body adjacent the touch-sensitive display screen.
    Type: Grant
    Filed: January 8, 2016
    Date of Patent: January 8, 2019
    Assignee: NINTENDO CO., LTD.
    Inventors: Hiroshi Yoshino, Keizo Ohta, Yoshitaka Yasumoto, Kenji Nishida, Kenichi Sugino, Masato Ibuki
  • Patent number: 9889384
    Abstract: An example terminal device includes a generally plate-shaped housing, an LCD provided on the front side of the housing, analog sticks, and first and second buttons. The analog sticks are provided respectively in left and right portions of the LCD above the center of the housing. The first and second buttons are provided on the back side of the housing so as to generally correspond to the analog sticks on the front side of the housing.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: February 13, 2018
    Assignee: Nintendo Co., Ltd.
    Inventors: Kenichiro Ashida, Yositomo Goto, Takanori Okamura, Junji Takamoto, Masato Ibuki, Shinji Yamamoto, Hitoshi Tsuchiya, Fumiyoshi Suetake, Akiko Suga, Naoya Yamamoto, Daisuke Kumazaki
  • Patent number: D830465
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: October 9, 2018
    Assignee: Nintendo Co., Ltd.
    Inventors: Fumiyoshi Suetake, Kumpei Fujita, Masato Ibuki
  • Patent number: D833531
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: November 13, 2018
    Assignee: Nintendo Co., Ltd.
    Inventors: Fumiyoshi Suetake, Kumpei Fujita, Masato Ibuki