Patents by Inventor Masayuki Kakizawa

Masayuki Kakizawa 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: 20210130586
    Abstract: The present invention provides a cellulose composite composed of a cellulose and a polysaccharide, wherein a Bragg spacing by small angle X-ray scattering (SAXS) of a sediment obtained by subjecting a 0.1% by mass aqueous dispersion of the cellulose composite to a centrifugation treatment is 8.6 nm or more, and a method for producing the same.
    Type: Application
    Filed: March 29, 2019
    Publication date: May 6, 2021
    Applicant: Asahi Kasei Kabushiki Kaisha
    Inventors: Hirotaka ASAI, Naoaki YAMASAKI, Masayuki KAKIZAWA, Naoki SAKAMOTO
  • Patent number: 10662258
    Abstract: This cellulose powder has: an average degree of polymerization of 100 to 350; a weight average particle size of over 30 ?m, but less than 250 ?m; an apparent specific volume of 2 to less than 15 cm3/g; and an organic carbon content from residual impurities, which is defined by the total organic carbon content (%) during 1% NaOH extraction to the total organic carbon content (%) during pure water extraction, of over 0.07 to 0.3%.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: May 26, 2020
    Assignee: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Kazuhiro Obae, Masayuki Kakizawa, Mitsuo Yamashita
  • Publication number: 20190330382
    Abstract: This cellulose powder has: an average degree of polymerization of 100 to 350; a weight average particle size of over 30 ?m, but less than 250 ?m; an apparent specific volume of 2 to less than 15 cm3/g; and an organic carbon content from residual impurities, which is defined by the total organic carbon content (%) during 1% NaOH extraction to the total organic carbon content (%) during pure water extraction, of over 0.07 to 0.3%.
    Type: Application
    Filed: May 10, 2019
    Publication date: October 31, 2019
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Kazuhiro OBAE, Masayuki KAKIZAWA, Mitsuo YAMASHITA
  • Patent number: 9592199
    Abstract: This cellulose powder has: an average degree of polymerization of 100 to 350; a weight average particle size of over 30 ?m, but less than 250 ?m; an apparent specific volume of 2 to less than 15 cm3/g; and a particle size distribution sharpness of 1.5 to 2.9.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: March 14, 2017
    Assignee: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Kazuhiro Obae, Masayuki Kakizawa, Mitsuo Yamashita, Shinji Matsui
  • Publication number: 20150150804
    Abstract: This cellulose powder has: an average degree of polymerization of 100 to 350; a weight average particle size of over 30 ?m, but less than 250 gm; an apparent specific volume of 2 to less than 15 cm3/g; and a particle size distribution sharpness of 1.5 to 2.9.
    Type: Application
    Filed: May 30, 2013
    Publication date: June 4, 2015
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Kazuhiro Obae, Masayuki Kakizawa, Mitsuo Yamashita, Shinji Matsui
  • Publication number: 20150110900
    Abstract: This cellulose powder has: an average degree of polymerization of 100 to 350; a weight average particle size of over 30 gm, but less than 250 ?m; an apparent specific volume of 2 to less than 15 cm3/g; and an organic carbon content from residual impurities, which is defined by the total organic carbon content (%) during 1% NaOH extraction to the total organic carbon content (%) during pure water extraction, of over 0.07 to 0.3%.
    Type: Application
    Filed: May 30, 2013
    Publication date: April 23, 2015
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Kazuhiro Obae, Masayuki Kakizawa, Mitsuo Yamashita
  • Patent number: 8298585
    Abstract: It is an object of the present invention to provide a fine core particle, which comprises a coating layer having a uniform thickness, and which can be used to produce, at a high yield, a small granule causing no sandy feeling in the oral cavity when the fine core particle is applied to a fine granule or an orally-disintegrating tablet. According to the present invention, there is provided a core particle, which comprises 50% by mass or more of microcrystalline cellulose, and which has a mean particle diameter of less than 100 ?m, a relative flow index of 7.0 to 30.0, a specific surface area of less than 0.15 m2/g, and a tapped bulk density of 0.80 g/mL or more.
    Type: Grant
    Filed: June 4, 2008
    Date of Patent: October 30, 2012
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Masayuki Kakizawa, Hidetoshi Tomiyama
  • Patent number: 8106100
    Abstract: A process for producing a tablet characterized by performing high-speed direct compression with a moving speed of a pestle of 800 mm/s or more while compressing a powder which contains at least 15 to 80% by mass of cellulose, an active ingredient and a lubricant and has an angle of repose of 50° C. or less, a compression degree of 20% or more and an elongation at break of 30 ?m or more.
    Type: Grant
    Filed: December 5, 2006
    Date of Patent: January 31, 2012
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Masayuki Kakizawa, Shunichi Gomi, Yuichi Ozeki
  • Publication number: 20100178332
    Abstract: It is an object of the present invention to provide a fine core particle, which comprises a coating layer having a uniform thickness, and which can be used to produce, at a high yield, a small granule causing no sandy feeling in the oral cavity when the fine core particle is applied to a fine granule or an orally-disintegrating tablet. According to the present invention, there is provided a core particle, which comprises 50% by mass or more of microcrystalline cellulose, and which has a mean particle diameter of less than 100 ?m, a relative flow index of 7.0 to 30.0, a specific surface area of less than 0.15 m2/g, and a tapped bulk density of 0.80 g/mL or more.
    Type: Application
    Filed: June 4, 2008
    Publication date: July 15, 2010
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Masayuki Kakizawa, Hidetoshi Tomiyama
  • Publication number: 20090163604
    Abstract: A process for producing a tablet characterized by performing high-speed direct compression with a moving speed of a pestle of 800 mm/s or more while compressing a powder which contains at least 15 to 80% by mass of cellulose, an active ingredient and a lubricant and has an angle of repose of 50° C. or less, a compression degree of 20% or more and an elongation at break of 30 ?m or more.
    Type: Application
    Filed: December 5, 2006
    Publication date: June 25, 2009
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Masayuki Kakizawa, Shunichi Gomi, Yuichi Ozeki