Patents by Inventor Kohji Nakazawa

Kohji Nakazawa 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: 11633523
    Abstract: Provided are a method for producing a cell tissue, including a culturing step of culturing cells capable of serving as a feeder inside opening pores and communicating pores of a porous film having a plurality of the opening pores provided on a surface thereof and the communicating pores communicating mutually adjacent opening pores with one another; and a porous film including a plurality of opening pores provided on a surface thereof and communicating pores communicating mutually adjacent opening pores with one another.
    Type: Grant
    Filed: March 7, 2019
    Date of Patent: April 25, 2023
    Assignee: FUJIFILM CORPORATION
    Inventors: Koju Ito, Shun Goto, Souichi Kohashi, Kohji Nakazawa, Hiroshi Yabu
  • Publication number: 20190201585
    Abstract: Provided are a method for producing a cell tissue, including a culturing step of culturing cells capable of serving as a feeder inside opening pores and communicating pores of a porous film having a plurality of the opening pores provided on a surface thereof and the communicating pores communicating mutually adjacent opening pores with one another; and a porous film including a plurality of opening pores provided on a surface thereof and communicating pores communicating mutually adjacent opening pores with one another.
    Type: Application
    Filed: March 7, 2019
    Publication date: July 4, 2019
    Inventors: Koju ITO, Shun GOTO, Souichi KOHASHI, Kohji NAKAZAWA, Hiroshi YABU
  • Patent number: 9121003
    Abstract: Provided is a cell culture instrument which has excellent operability while including a plurality of wells capable of holding cells. The cell culture instrument according to the present invention includes a base portion in which a well group including a plurality of first wells capable of holding cells is formed, and a frame portion vertically arranged around the well group of the base portion to form a second well being capable of holding a solution.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: September 1, 2015
    Assignee: KITAKYUSHU FOUNDATION FOR THE ADVANCEMENT OF INDUSTRY, SCIENCE AND TECHNOLOGY
    Inventors: Kohji Nakazawa, Yusuke Sakai
  • Patent number: 8652847
    Abstract: A microchip is provided that forms cellular tissues having uniform shapes and sizes and that can culture the formed cellular tissues for long periods of time. The cellular tissue microchip comprises a plurality of cell-retaining cavities (12) for retaining cells, wherein a bottom surface (20) of the cell-retaining cavities has one adhesive region (30) that exhibits cellular adhesiveness and a non-adhesive region (32) that surrounds the adhesive region (30) and that exhibits cellular non-adhesiveness.
    Type: Grant
    Filed: October 21, 2005
    Date of Patent: February 18, 2014
    Assignee: Kitakyushu Foundation for the Advancement of Industry, Science and Technology
    Inventors: Kohji Nakazawa, Junji Fukuda
  • Publication number: 20110003389
    Abstract: Provided is a cell culture instrument which has excellent operability while including a plurality of wells capable of holding cells. The cell culture instrument according to the present invention includes a base portion in which a well group including a plurality of first wells capable of holding cells is formed, and a frame portion vertically arranged around the well group of the base portion to form a second well being capable of holding a solution.
    Type: Application
    Filed: September 5, 2008
    Publication date: January 6, 2011
    Applicant: KITAKYUSHU FOUNDATION FOR THE ADVANCEMENT OF INDUSTRY, SCIENCE AND TECHNOLOGY
    Inventors: Kohji Nakazawa, Yusuke Sakai
  • Patent number: 7695958
    Abstract: To provide a cell-filled device that is suitable for use in, for example, an implantable or circulation type hybrid artificial organ. In a cell-filled device including hollow fiber membranes whose hollow portions are filled with cells, the hollow fiber membranes have modified cross sections, and a cell aggregate provided in each of the hollow portions has cells formed into two or more layers in arbitrary directions, provided that the distance from an arbitrary point of the cell aggregate to the nearest inner wall of hollow fiber membrane is less than 75 ?m. This cell-filled device enables effective use of cells without the necrosis thereof. Further, according to the present invention, there is provided a method of manufacturing the cell-filled device.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: April 13, 2010
    Assignee: Asahi Kasei Kuraray Medical Co., Ltd.
    Inventors: Kazumori Funatsu, Kohji Nakazawa, Hiroshi Mizumoto, Junji Fukuda, Mikitomo Yasutake
  • Publication number: 20080138900
    Abstract: A microchip is provided that forms cellular tissues having uniform shapes and sizes and that can culture the formed cellular tissues for long periods of time. The cellular tissue microchip comprises a plurality of cell-retaining cavities (12) for retaining cells, wherein a bottom surface (20) of the cell-retaining cavities has one adhesive region (30) that exhibits cellular adhesiveness and a non-adhesive region (32) that surrounds the adhesive region (30) and that exhibits cellular non-adhesiveness.
    Type: Application
    Filed: October 21, 2005
    Publication date: June 12, 2008
    Applicant: Kitakyushu Foundation For The Advancement Of Industry, Science And Technology
    Inventors: Kohji Nakazawa, Junji Fukuda
  • Publication number: 20070020756
    Abstract: The present invention provides methods of culturing or storing cells for a prolonged period while suppressing a loss of functions of the cells during storage, by applying centrifugal force or pressure such as hydraulic pressure to the cells to form compact bodies, particularly aggregates, in which a state of high contact or a high contact frequency is maintained between the cells, and then culturing, storing or inducing differentiation in the cells in this aggregate state.
    Type: Application
    Filed: September 29, 2006
    Publication date: January 25, 2007
    Applicants: Toyo Boseki Kabushiki Kaisha, Kazumori FUNATSU
    Inventors: Tatsuya Yamaguchi, Takuya Ishibashi, Kazumori Funatsu, Kohji Nakazawa
  • Publication number: 20060110369
    Abstract: To provide a cell-filled device that is suitable for use in, for example, an implantable or circulation type hybrid artificial organ. In a cell-filled device including hollow fiber membranes whose hollow portions are filled with cells, the hollow fiber membranes have modified cross sections, and a cell aggregate provided in each of the hollow portions has cells formed into two or more layers in arbitrary directions, provided that the distance from an arbitrary point of the cell aggregate to the nearest inner wall of hollow fiber membrane is less than 75 ?m. This cell-filled device enables effective use of cells without the necrosis thereof. Further, according to the present invention, there is provided a method of manufacturing the cell-filled device.
    Type: Application
    Filed: August 28, 2003
    Publication date: May 25, 2006
    Inventors: Kazumori Funatsu, Kohji Nakazawa, Hiroshi Mizumoto, Junji Fukuda, Mikitomo Yasutake
  • Publication number: 20030224510
    Abstract: The present invention provides methods of culturing or storing cells for a prolonged period while suppressing a loss of functions of the cells during storage, by applying centrifugal force or pressure such as hydraulic pressure to the cells to form compact bodies, particularly aggregates, in which a state of high contact or a high contact frequency is maintained between the cells, and then culturing, storing or inducing differentiation in the cells in this aggregate state.
    Type: Application
    Filed: May 28, 2003
    Publication date: December 4, 2003
    Applicants: Toyo Boseki Kabushiki Kaisha, Kazumori FUNATSU
    Inventors: Tatsuya Yamaguchi, Takuya Ishibashi, Kazumori Funatsu, Kohji Nakazawa