Patents by Inventor Yoshihito Yaginuma

Yoshihito Yaginuma 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: 9095512
    Abstract: Spherical base granules comprising a hardly water-soluble drug and suited for film coating thereon are produced by layering spherical core particles with a drug-containing layering liquid comprising both micronized microcrystalline cellulose and an emulsifier therein and therefore having improved suspension stability.
    Type: Grant
    Filed: August 9, 2007
    Date of Patent: August 4, 2015
    Assignee: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Yoshihito Yaginuma, Rika Matsumoto
  • Patent number: 9029427
    Abstract: Disclosed is a solid preparation which comprises at least one active ingredient and at least one dissolution-controlling base substance and can be formed by compression molding, wherein the dissolution-controlling base substance contains 5.0 to 99.9% by weight (inclusive) of a modified starch having a moisture retaining capacity of 400% or more and a gel indentation load of 200 g or more, containing a water-soluble ingredient in an amount of 40 to 95% by weight, having particles passing through a 75 ?m-mesh sieve in the proportion of 90% by weight or more and particles passing through a 32 ?m-mesh sieve in the proportion of 20% by weight or more, and having an average particle diameter of not smaller than 20 ?m and smaller than 50 ?m.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: May 12, 2015
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Masaaki Endo, Kazuhiro Obae, Ichirou Ibuki, Yoshihito Yaginuma
  • Patent number: 8765187
    Abstract: Disclosed is an aqueous composition containing (a) an ethyl acrylate/methyl methacrylate copolymer or a plasticized vinyl accetate polymer, (b) an ethyl cellulose, (c) a water soluble additive for pharmaceutical products, (d) titanium oxide and (c) water. The solid content mass ratio among the components (a), (b), (c) and (d), namely a:b:c:d is 100:(5-50):(1-50):(0.5-10), and the solid content concentration in the aqueous composition is 0.5-40% by mass.
    Type: Grant
    Filed: July 16, 2008
    Date of Patent: July 1, 2014
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Yoshihito Yaginuma, Naoya Yoshida
  • Patent number: 8568785
    Abstract: Provided is a process for producing spherical base granules comprising a easily water-soluble drug and suited for film coating by spraying a layering liquid over pharmaceutically inert spherical core particles, thereby coating the particles with a layer comprising the easily water-soluble drug, wherein (1) the spherical core particles have a microcrystalline cellulose content of 30 mass % or greater and a water absorbing capacity of 0.5 cm3/g or greater; and (2) the layering liquid is an aqueous solution comprising at least the easily water-soluble drug and a low water-soluble saccharide.
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: October 29, 2013
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Yoshihito Yaginuma, Rika Matsumoto
  • Patent number: 8367115
    Abstract: A process for producing a granule-containing tablet comprising mixing more than 25 mass % to 89 mass % or less of crystalline cellulose exhibiting a tensile displacement at break of 25 to 80 ?m and a relative fluidity index of 2.15 to 2.80 at a maximum compaction stress of 15 kPa, 10 to 70 mass % of spherical granules, and 20 mass % or less of a disintegrant, and then compressing the obtained mixture.
    Type: Grant
    Filed: August 26, 2008
    Date of Patent: February 5, 2013
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Yoshihito Yaginuma, Naoya Yoshida
  • Patent number: 8349365
    Abstract: Disclosed is a cellooligosaccharide composition comprising, as the main ingredient, at least one cellooligosaccharide selected from the group consisting of cellobiose, cellotriose, cellotetraose, cellopentaose and cellohexaose, which is in the powdery form having an average L/D value of 3.0 or lower, a bulk density of 0.80 g/mL or lower and an angle of repose of 60° or lower.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: January 8, 2013
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Naoaki Yamasaki, Ichiro Ibuki, Yoshihito Yaginuma, Yoshinaga Tamura
  • Patent number: 8268356
    Abstract: An object of the present invention is to provide an aqueous film coating solution, and the like, which has good acid resistance and sustained release properties as well as the flexibility suitable for the tablet compression force and are highly productive and cost efficient. The aqueous film coating solution of the present invention comprises an ethyl acrylate/methyl methacrylate copolymer dispersion, a methacrylic acid copolymer LD, a plasticizer, titanium oxide and water, wherein the solid mass ratio of the ethyl acrylate/methyl methacrylate copolymer dispersion, the methacrylic acid copolymer LD, the plasticizer and the titanium oxide is 100:(40 to 100):(5 to 50):(5 to 30) and the solid content thereof is 5 to 20 mass %.
    Type: Grant
    Filed: November 12, 2008
    Date of Patent: September 18, 2012
    Assignee: Asahi Kasei Chemicals Corporation
    Inventors: Naoya Yoshida, Yoshihito Yaginuma
  • Patent number: 7838666
    Abstract: A material is provided to give food products sufficient viscosity and stability (heat resistance, stable suspension, etc.). The material is produced from an inexpensive raw material by an economical process. Further, a novel gel containing cellulose as the main component is also provided. The present invention provides a fine fibrous water-dispersible cellulose derived from plant cell walls. For the production, a raw material having specific properties is used, and size reduction is carried out stepwise thereto. The water-dispersible cellulose can also be made into a dry composition by compounding with a water-soluble polymer or the like. This dry composition forms a gel when combined with a polysaccharide such as glucomannan or the like. The gel excels in heat-resistance and shape-retention and can be used to produce to novel food products.
    Type: Grant
    Filed: July 10, 2003
    Date of Patent: November 23, 2010
    Assignee: Asahi Kasei Kabushik Kaisha
    Inventors: Yoshihito Yaginuma, Nobuyoshi Mochihara, Yurika Tanaka, Tetsuya Ootani, Kouichirou Enatsu, Mitsuyo Akimoto, Akihiro Sakamoto
  • Publication number: 20100260839
    Abstract: An object of the present invention is to provide an aqueous film coating solution, and the like, which has good acid resistance and sustained release properties as well as the flexibility suitable for the tablet compression force and are highly productive and cost efficient. The aqueous film coating solution of the present invention comprises an ethyl acrylate/methyl methacrylate copolymer dispersion, a methacrylic acid copolymer LD, a plasticizer, titanium oxide and water, wherein the solid mass ratio of the ethyl acrylate/methyl methacrylate copolymer dispersion, the methacrylic acid copolymer LD, the plasticizer and the titanium oxide is 100:(40 to 100):(5 to 50):(5 to 30) and the solid content thereof is 5 to 20 mass %.
    Type: Application
    Filed: November 12, 2008
    Publication date: October 14, 2010
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Naoya Yoshida, Yoshihito Yaginuma
  • Publication number: 20100209504
    Abstract: A process for producing a granule-containing tablet comprising mixing more than 25 mass % to 89 mass % or less of crystalline cellulose exhibiting a tensile displacement at break of 25 to 80 ?m and a relative fluidity index of 2.15 to 2.80 at a maximum compaction stress of 15 kPa, 10 to 70 mass % of spherical granules, and 20 mass % or less of a disintegrant, and then compressing the obtained mixture.
    Type: Application
    Filed: August 26, 2008
    Publication date: August 19, 2010
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Yoshihito Yaginuma, Naoya Yoshida
  • Publication number: 20100172978
    Abstract: Disclosed is an aqueous composition containing (a) an ethyl acrylate/methyl methacrylate copolymer or a plasticized vinyl accetate polymer, (b) an ethyl cellulose, (c) a water soluble additive for pharmaceutical products, (d) titanium oxide and (c) water. The solid content mass ratio among the components (a), (b), (c) and (d), namely a:b:c:d is 100:(5-50):(1-50):(0.5-10), and the solid content concentration in the aqueous composition is 0.5-40% by mass.
    Type: Application
    Filed: July 16, 2008
    Publication date: July 8, 2010
    Applicant: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Yoshihito Yaginuma, Naoya Yoshida
  • Publication number: 20090324802
    Abstract: Spherical base granules comprising a hardly water-soluble drug and suited for film coating thereon are produced by layering spherical core particles with a drug-containing layering liquid comprising both micronized microcrystalline cellulose and an emulsifier therein and therefore having improved suspension stability.
    Type: Application
    Filed: August 9, 2007
    Publication date: December 31, 2009
    Applicant: ASAHL KASEI CHEMICALS CORPORATION
    Inventors: Yoshihito Yaginuma, Rika Matsumoto
  • Publication number: 20090280186
    Abstract: Provided is a process for producing spherical base granules comprising a easily water-soluble drug and suited for film coating by spraying a layering liquid over pharmaceutically inert spherical core particles, thereby coating the particles with a layer comprising the easily water-soluble drug, wherein (1) the spherical core particles have a microcrystalline cellulose content of 30 mass % or greater and a water absorbing capacity of 0.5 cm3/g or greater; and (2) the layering liquid is an aqueous solution comprising at least the easily water-soluble drug and a low water-soluble saccharide.
    Type: Application
    Filed: July 18, 2007
    Publication date: November 12, 2009
    Applicant: Asahi Kasei Chemicals Corporation
    Inventors: Yoshihito Yaginuma, Rika Matsumoto
  • Publication number: 20090269401
    Abstract: Disclosed is a solid preparation which comprises at least one active ingredient and at least one dissolution-controlling base substance and can be formed by compression molding, wherein the dissolution-controlling base substance contains 5.0 to 99.9% by weight (inclusive) of a modified starch having a moisture retaining capacity of 400% or more and a gel indentation load of 200 g or more, containing a water-soluble ingredient in an amount of 40 to 95% by weight, having particles passing through a 75 ?m-mesh sieve in the proportion of 90% by weight or more and particles passing through a 32 ?m-mesh sieve in the proportion of 20% by weight or more, and having an average particle diameter of not smaller than 20 ?m and smaller than 50 ?m.
    Type: Application
    Filed: November 10, 2006
    Publication date: October 29, 2009
    Inventors: Masaaki Endo, Kazuhiro Obae, Ichirou Ibuki, Yoshihito Yaginuma
  • Publication number: 20090232892
    Abstract: Disclosed is a cellooligosaccharide composition comprising, as the main ingredient, at least one cellooligosaccharide selected from the group consisting of cellobiose, cellotriose, cellotetraose, cellopentaose and cellohexaose, which is in the powdery form having an average L/D value of 3.0 or lower, a bulk density of 0.80 g/mL or lower and an angle of repose of 60° or lower.
    Type: Application
    Filed: September 27, 2006
    Publication date: September 17, 2009
    Inventors: Naoaki Yamasaki, Ichiro Ibuki, Yoshihito Yaginuma, Yoshinaga Tamura
  • Publication number: 20090196934
    Abstract: The characteristic in being coated with film of spherical elementary granules is improved by adjusting a short/long diameter-ratio distribution coefficient to a specific value.
    Type: Application
    Filed: July 25, 2007
    Publication date: August 6, 2009
    Applicant: Asahi Kasei Chemicals Corporation
    Inventors: Yoshihito Yaginuma, Rika Matsumoto
  • Patent number: 7544379
    Abstract: A fine-cellulose-containing complex comprising 60 to 80 wt % of fine cellulose, 2 to 12 wt % of locust bean gum, 0.5 to 8 wt % of xanthan gum and 0 to 37.5 wt % of a hydrophilic material(s), the complex being a powder wherein the average particle size of particles formed by mild dispersion of the complex in water at 85° C. is 60 ?m or less, the proportion of particles with a particle size of 100 ?m or more among the formed particles is 30 vol % or less based on the total volume of the formed particles, and a colloid fraction in the case of vigorous dispersion of the complex in water at 25° C. is 30% or less.
    Type: Grant
    Filed: May 29, 2002
    Date of Patent: June 9, 2009
    Assignee: Asahi Kasei Kabushiki Kaisha
    Inventors: Yasushi Kawamura, Yuka Itou, Nobuyoshi Mochihara, Yoshihito Yaginuma, Kouichi Noda, Akihiro Sakamoto
  • Publication number: 20050272836
    Abstract: A material is provided to give food products sufficient viscosity and stability (heat resistance, stable suspension, etc.). The material is produced from an inexpensive raw material by an economical process. Further, a novel gel containing cellulose as the main component is also provided. The present invention provides a fine fibrous water-dispersible cellulose derived from plant cell walls. For the production, a raw material having specific properties is used, and size reduction is carried out stepwise thereto. The water-dispersible cellulose can also be made into a dry composition by compounding with a water-soluble polymer or the like. This dry composition forms a gel when combined with a polysaccharide such as glucomannan or the like. The gel excels in heat-resistance and shape-retention and can be used to produce to novel food products.
    Type: Application
    Filed: July 10, 2003
    Publication date: December 8, 2005
    Applicant: ASAHI KASEI KABUSHIKI KAISHA
    Inventors: Yoshihito Yaginuma, Nobuyoshi Mochihara, Yurika Tanaka, Tetsuya Ootani, Kouichirou Enatsu, Mitsuyo Akimoto, Akihiro Sakamoto
  • Publication number: 20040137138
    Abstract: A fine-cellulose-containing complex comprising 60 to 80 wt % of fine cellulose, 2 to 12 wt % of locust bean gum, 0.5 to 8 wt % of xanthan gum and 0 to 37.5 wt % of a hydrophilic material(s), said complex being such powder that the average particle size of particles formed by mild dispersion of the complex in water at 85° C. is 60 &mgr;m or less, the proportion of particles with a particle size of 100 &mgr;m or more among the formed particles is 30 vol % or less based on the total volume of the formed particles, and a colloid fraction in the case of vigorous dispersion of the complex in water at 25° C. is 30% or less.
    Type: Application
    Filed: November 26, 2003
    Publication date: July 15, 2004
    Inventors: Yasushi Kawamura, Yuka Itou, Nobuyoshi Mochihara, Yoshihito Yaginuma, Kouchi Noda, Akihiro Sakamoto
  • Patent number: RE45810
    Abstract: Provided is a process for producing spherical base granules comprising a easily water-soluble drug and suited for film coating by spraying a layering liquid over pharmaceutically inert spherical core particles, thereby coating the particles with a layer comprising the easily water-soluble drug, wherein (1) the spherical core particles have a microcrystalline cellulose content of 30 mass % or greater and a water absorbing capacity of 0.5 cm3/g or greater; and (2) the layering liquid is an aqueous solution comprising at least the easily water-soluble drug and a low water-soluble saccharide.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: November 24, 2015
    Assignee: ASAHI KASEI CHEMICALS CORPORATION
    Inventors: Yoshihito Yaginuma, Rika Matsumoto