Patents by Inventor Koichiro Tsuji

Koichiro Tsuji 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: 8119397
    Abstract: This invention provides therapeutic agents, transplants and therapeutic methods that can enhance the regeneration of injured tissue. This invention relates to agents, transplants and therapeutic methods for enhancing the migration and accumulation of mesenchymal stem cells in injured tissues and/or suppressing the diffusion of mesenchymal stem cells from injured tissues.
    Type: Grant
    Filed: March 31, 2005
    Date of Patent: February 21, 2012
    Assignees: Two Cells Co., Ltd.
    Inventors: Yukio Kato, Masahiro Nishimura, Yoshie Ozaki, Koichiro Tsuji
  • Patent number: 8039256
    Abstract: To efficiently select and proliferate the mesenchymal stem cells without necessity of an exclusive separating device and a complicated separating operation, mesenchymal stem cells are cultured by seeding at least one of a bone marrow solution, an umbilical cord blood, a peripheral blood, a synovial membrane and an amniotic membrane in a liquid culture medium which is filled in a vessel, includes water as its main components and having a specific gravity between 1.06 and 1.10 at 37° C., and making a culture at a temperature 37±2° C. on a ceiling side surface of the vessel, preferably the specific gravity being regulated by use of at least one selected from silica fine powder coated by polyvinyl pyrrolidone, a water soluble copolymer of sucrose and epichlorohydrin, and a water soluble compound including a triiodo aromatic ring.
    Type: Grant
    Filed: September 28, 2010
    Date of Patent: October 18, 2011
    Assignees: GC Corporation, Two Cells Co., Ltd.
    Inventors: Yuhiro Sakai, Katsuyuki Yamanaka, Mika Takeda, Tomohisa Okura, Koichiro Tsuji
  • Publication number: 20110212523
    Abstract: Provided is a differentiation-inducing culture medium additive for inducing bone differentiation of at least one type of cell selected from the group consisting of a stem cell, a dental pulp cell, a periodontal ligament cell, a placenta, an amnion, and a fibroblast under a serum-free condition, and a use of the differentiation-inducing culture medium additive. The differentiation-inducing culture medium additive of the present invention for inducing differentiation of a stem cell under a serum-free condition at least contains at least one growth factor selected from the group consisting of EGF, FGF, and PDGF; dexamethasone; and ?-glycerophosphate. The differentiation-inducing culture medium additive of the present invention does not require ascorbic acid 2-phosphate and ITS, which are normally essential for bone differentiation. Further, bone differentiation can be promoted by adding phospholipid.
    Type: Application
    Filed: October 22, 2009
    Publication date: September 1, 2011
    Inventors: Yukio Kato, Jin Chang Shao, Koichiro Tsuji
  • Publication number: 20110076770
    Abstract: To efficiently select and proliferate the mesenchymal stem cells without necessity of an exclusive separating device and a complicated separating operation, mesenchymal stem cells are cultured by seeding at least one of a bone marrow solution, an umbilical cord blood, a peripheral blood, a synovial membrane and an amniotic membrane in a liquid culture medium which is filled in a vessel, includes water as its main components and having a specific gravity between 1.06 and 1.10 g/ml at 37° C., and making a culture at a temperature 37±2° C. on a ceiling side surface of the vessel, preferably the specific gravity being regulated by use of at least one selected from silica fine powder coated by polyvinyl pyrrolidone, a water soluble copolymer of sucrose and epichlorohydrin, and a water soluble compound including a triiodo aromatic ring.
    Type: Application
    Filed: September 28, 2010
    Publication date: March 31, 2011
    Applicants: GC Corporation, TWO CELLS CO., LTD.
    Inventors: Yuhiro SAKAI, Katsuyuki Yamanaka, Mika Takeda, Tomohisa Okura, Koichiro Tsuji
  • Publication number: 20110010781
    Abstract: The present invention provides an immunodeficient mouse (NOG mouse) suitable for engraftment, differentiation and proliferation of heterologous cells, and a method of producing such a mouse. This mouse is obtained by backcrossing a C.B-17-scid mouse with an NOD/Shi mouse, and further backcrossing an interleukin 2-receptor ?-chain gene-knockout mouse with the thus backcrossed mouse. It is usable for producing a human antibody and establishing a stem cell assay system, a tumor model and a virus-infection model.
    Type: Application
    Filed: November 17, 2009
    Publication date: January 13, 2011
    Inventors: Mamoru Ito, Kimio Kobayashi, Tatsutoshi Nakahata, Koichiro Tsuji, Sonoko Habu, Yoshio Koyanagi, Naoki Yamamoto, Kazuo Sugamura, Kiyoshi Ando, Tatsuji Nomura
  • Publication number: 20100279412
    Abstract: Disclosed are: a culture medium containing a specific growth factor and at least one phospholipid; a composition for preparation of the culture medium; a kit; and a method. A technique can be provided which uses a serum-free or low-serum culture medium and has a promoting effect on the proliferation of an animal cell comparable to the promoting effect obtained by the culture in a serum-containing culture medium.
    Type: Application
    Filed: January 11, 2007
    Publication date: November 4, 2010
    Applicants: JAPAN SCIENCE AND TECHNOLOGY AGENCY, TWO CELLS CO. LTD.
    Inventors: Yukio Kato, Jin Chang Shao, Yuki Katsura, Koichiro Tsuji
  • Publication number: 20100158982
    Abstract: To provide a sheet for guiding regeneration of mesenchymal tissue having improved formability, strength, absorbability and efficiency, the sheet is produced by steps of containing a culture medium in a surface of a porous sheet produced by freezing a bioabsorbable polymer material dissolved with an organic solvent and drying it, seeding a mesenchymal cell grown after taking from biotissue, and differentiating the mesenchymal cell to a mesenchymal tissue precursor cell, where the mesenchymal tissue precursor cell and an extracellular substrate are adhered on the surface of the porous sheet containing a culture medium, and the extracellular substrate is secreted in a process of the mesenchymal cell being differentiated to the mesenchymal tissue precursor cell.
    Type: Application
    Filed: February 22, 2010
    Publication date: June 24, 2010
    Applicants: GC CORPORATION, TWO CELLS Co., Ltd.
    Inventors: Toshitsugu KAWATA, Kaoru Tenjo, Koichiro Tsuji, Katsuyuki Yamanaka
  • Patent number: 7682132
    Abstract: A film cooling structure includes a wall surface which faces a gas-flow passage for high-temperature gas. One or more than one pair of jetting holes are formed on the wall surface so as to respectively jet cooling media into the gas-flow passage. The pair of jetting holes respectively have jetting directions in which the cooling media are jetted from the pair of jetting holes into the gas-flow passage. The jetting directions of the pair of jetting holes are respectively set so as to respectively form swirls in directions in which the cooling media are mutually pressed against the wall surface.
    Type: Grant
    Filed: November 15, 2006
    Date of Patent: March 23, 2010
    Assignee: Kawasaki Jukogyo Kabushiki Kaisha
    Inventors: Takao Sugimoto, Ryozo Tanaka, Koichiro Tsuji, Dieter Bohn, Karsten Kusterer
  • Publication number: 20090262001
    Abstract: A remote control system is provided. The remote control system includes at least one first remote control apparatus and at least one second remote control apparatus. The at least one first remote control apparatus includes a command input unit, a first control unit, and a first output unit. The at least one second remote control apparatus includes a first user interface unit, a first input unit, a second control unit, and a second output unit.
    Type: Application
    Filed: March 10, 2009
    Publication date: October 22, 2009
    Applicant: Sony Corporation
    Inventors: Tsugihiko Haga, Hiroto Kimura, Masanori Machimura, Koichiro Tsuji, Toshiyuki Hino, Tetsujiro Kondo
  • Publication number: 20090232773
    Abstract: Disclosed is a method for distinguishing a mesenchymal stem cell comprising, using at least one gene selected from the genes having the nucleotide sequences indicated by the accession numbers shown in Table 1 as a distinguish marker, detecting the difference in expression of the distinguish marker between a mesenchymal stem cell and a connective tissue cell to distinguish the mesenchymal stem cell from the connective tissue cell. This method enables to distinguish an undifferentiated mesenchymal stem cell from other connective tissue cell such as fibroblasts, osteoblasts, chondrocytes and adipose cells with good accuracy. A mesenchymal stem cell given by this method or a composition comprising the mesenchymal stem sell can be used as a therapeutic for use in the regenerative medicine.
    Type: Application
    Filed: March 30, 2006
    Publication date: September 17, 2009
    Inventors: Yukio Kato, Takeshi Kawamoto, Koichiro Tsuji, Akira Igarashi, Masakazu Shimizu
  • Publication number: 20090221076
    Abstract: An objective of the present invention is to provide a production method of a sheet for regenerating a cartilage tissue, which uses a conventional sheet-shaped porous body comprising a biological absorbency synthetic high polymer, such as polylactic acid, polyglycolic acid and a copolymer of lactic acid and glycolic acid. The sheet for regenerating the cartilage tissue can differentiate chondrocytes or stem cells without culturing the cells by pressurizing such as a pressurizing culture like the conventional method, and can accumulate the cells in a supporting carrier with high efficiency.
    Type: Application
    Filed: February 28, 2006
    Publication date: September 3, 2009
    Applicants: GC Corporation, TWO CELLS Co. Ltd.
    Inventors: Yukio Kato, Koichiro Tsuji, Katsuyuki Yamanaka
  • Publication number: 20080254019
    Abstract: This invention provides therapeutic agents, transplants and therapeutic methods that can enhance the regeneration of injured tissue. This invention relates to agents, transplants and therapeutic methods for enhancing the migration and accumulation of mesenchymal stem cells in injured tissues and/or suppressing the diffusion of mesenchymal stem cells from injured tissues.
    Type: Application
    Filed: March 31, 2005
    Publication date: October 16, 2008
    Inventors: Yukio Kato, Masahiro Nishimura, Yoshie Ozaki, Koichiro Tsuji
  • Publication number: 20080220521
    Abstract: To provide a sheet for guiding regeneration of mesenchymal tissue having improved formability, strength, absorbability and efficiency, the sheet is produced by steps of containing a culture medium in a surface of a porous sheet produced by freezing a bioabsorbable polymer material dissolved with an organic solvent and drying it, seeding a mesenchymal cell grown after taking from biotissue, and differentiating the mesenchymal cell to a mesenchymal tissue precursor cell, where the mesenchymal tissue precursor cell and an extracellular substrate are adhered on the surface of the porous sheet containing a culture medium, and the extracellular substrate is secreted in a process of the mesenchymal cell being differentiated to the mesenchymal tissue precursor cell.
    Type: Application
    Filed: May 20, 2008
    Publication date: September 11, 2008
    Applicants: GC Corporation, TWO CELLS Co. Ltd.
    Inventors: Toshitsugu Kawata, Kaoru Tenjo, Koichiro Tsuji, Katsuyuki Yamanaka
  • Publication number: 20070109743
    Abstract: A film cooling structure includes a wall surface which faces a gas-flow passage for high-temperature gas. One or more than one pair of jetting holes are formed on the wall surface so as to respectively jet cooling media into the gas-flow passage. The pair of jetting holes respectively have jetting directions in which the cooling media are jetted from the pair of jetting holes into the gas-flow passage. The jetting directions of the pair of jetting holes are respectively set so as to respectively form swirls in directions in which the cooling media are mutually pressed against the wall surface.
    Type: Application
    Filed: November 15, 2006
    Publication date: May 17, 2007
    Applicant: KAWASAKI JUKOGYO KABUSHIKI KAISHA
    Inventors: Takao Sugimoto, Ryozo Tanaka, Koichiro Tsuji, Dieter Bohn, Karsten Kusterer
  • Publication number: 20070011753
    Abstract: The present invention provides an immunodeficient mouse (NOG mouse) suitable for engraftment, differentiation and proliferation of heterologous cells, and a method of producing such a mouse. This mouse is obtained by backcrossing a C.B-17-scid mouse with an NOD/Shi mouse, and further backcrossing an interleukin 2-receptor ?-chain gene-knockout mouse with the thus backcrossed mouse. It is usable for producing a human antibody and establishing a stem cell assay system, a tumor model and a virus-infection model.
    Type: Application
    Filed: September 8, 2006
    Publication date: January 11, 2007
    Inventors: Mamoru Ito, Kimio Kobayashi, Tatsutoshi Nakahata, Koichiro Tsuji, Sonoko Habu, Yoshio Koyanagi, Naoki Yamamoto, Kazuo Sugamura, Kiyoshi Ando, Tatsuji Nomura
  • Patent number: 7145055
    Abstract: The present invention provides an immunodeficient mouse (NOG mouse) suitable for engraftment, differentiation and proliferation of heterologous cells, and a method of producing such a mouse. This mouse is obtained by backcrossing a C.B-17-scid mouse with an NOD/Shi mouse, and further backcrossing an interleukin 2-receptor ?-chain gene-knockout mouse with the thus backcrossed mouse. It is usable for producing a human antibody and establishing a stem cell assay system, a tumor model and a virus-infection model.
    Type: Grant
    Filed: October 25, 2001
    Date of Patent: December 5, 2006
    Assignee: Central Institute for Experimental Animals
    Inventors: Mamoru Ito, Kimio Kobayashi, Tatsutoshi Nakahata, Koichiro Tsuji, Sonoko Habu, Yoshio Koyanagi, Naoki Yamamoto, Kazuo Sugamura, Kiyoshi Ando, Tatsuji Nomura
  • Publication number: 20060166214
    Abstract: The present invention provides a marker for detecting, separating/distinguishing a mesenchymal stem cell and a method for detecting, separating/distinguishing a mesenchymal stem cell by using the marker. A gene shown in the sequence listing is expressed specifically in a mesenchymal stem cell. The present invention comprises use of the gene as a marker for detecting mesenchymal stem cells.
    Type: Application
    Filed: February 27, 2004
    Publication date: July 27, 2006
    Inventors: Yukio Kato, Koichiro Tsuji, Chika Koike
  • Publication number: 20060088569
    Abstract: To provide a sheet for guiding regeneration of mesenchymal tissue having improved formability, strength, absorbability and efficiency, the sheet is produced by steps of containing a culture medium in a surface of a porous sheet produced by freezing a bioabsorbable polymer material dissolved with an organic solvent and drying it, seeding a mesenchymal cell grown after taking from biotissue, and differentiating the mesenchymal cell to a mesenchymal tissue precursor cell, where the mesenchymal tissue precursor cell and an extracellular substrate are adhered on the surface of the porous sheet containing a culture medium, and the extracellular substrate is secreted in a process of the mesenchymal cell being differentiated to the mesenchymal tissue precursor cell.
    Type: Application
    Filed: October 24, 2005
    Publication date: April 27, 2006
    Applicants: GC CORPORATION, TWO CELLS Co. Ltd.
    Inventors: Toshitsugu Kawata, Kaoru Tenjo, Koichiro Tsuji, Katsuyuki Yamanaka
  • Patent number: 6957969
    Abstract: In a card connector including a card guide for guiding movement of a card in a first direction, the card guide defines a fitting position and a releasing position of the card in the first direction. A slider is coupled to the card guide to be slidable in the first direction. The slider is continuously urged by an elastic member towards the fitting position. When the slider is slid against urging force of the elastic member, a butting portion of the slider is engaged with the card at the fitting position to transfer the card to the releasing position.
    Type: Grant
    Filed: August 13, 2004
    Date of Patent: October 25, 2005
    Assignee: Japan Aviation Electronics Industry, Limited
    Inventors: Masafumi Kodera, Keisuke Nakamura, Koichiro Tsuji
  • Publication number: 20050037648
    Abstract: In a card connector including a card guide for guiding movement of a card in a first direction, the card guide defines a fitting position and a releasing position of the card in the first direction. A slider is coupled to the card guide to be slidable in the first direction. The slider is continuously urged by an elastic member towards the fitting position. When the slider is slid against urging force of the elastic member, a butting portion of the slider is engaged with the card at the fitting position to transfer the card to the releasing position.
    Type: Application
    Filed: August 13, 2004
    Publication date: February 17, 2005
    Inventors: Masafumi Kodera, Keisuke Nakamura, Koichiro Tsuji