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).
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Patent number: 11390690Abstract: 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: GrantFiled: May 10, 2019Date of Patent: July 19, 2022Assignee: ASAHI KASEI CHEMICALS CORPORATIONInventors: Kazuhiro Obae, Masayuki Kakizawa, Mitsuo Yamashita
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Publication number: 20210130586Abstract: 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: ApplicationFiled: March 29, 2019Publication date: May 6, 2021Applicant: Asahi Kasei Kabushiki KaishaInventors: Hirotaka ASAI, Naoaki YAMASAKI, Masayuki KAKIZAWA, Naoki SAKAMOTO
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Patent number: 10662258Abstract: 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: GrantFiled: May 30, 2013Date of Patent: May 26, 2020Assignee: ASAHI KASEI CHEMICALS CORPORATIONInventors: Kazuhiro Obae, Masayuki Kakizawa, Mitsuo Yamashita
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Publication number: 20190330382Abstract: 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: ApplicationFiled: May 10, 2019Publication date: October 31, 2019Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Kazuhiro OBAE, Masayuki KAKIZAWA, Mitsuo YAMASHITA
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Patent number: 9592199Abstract: 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: GrantFiled: May 30, 2013Date of Patent: March 14, 2017Assignee: ASAHI KASEI CHEMICALS CORPORATIONInventors: Kazuhiro Obae, Masayuki Kakizawa, Mitsuo Yamashita, Shinji Matsui
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Publication number: 20150150804Abstract: 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: ApplicationFiled: May 30, 2013Publication date: June 4, 2015Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Kazuhiro Obae, Masayuki Kakizawa, Mitsuo Yamashita, Shinji Matsui
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Publication number: 20150110900Abstract: 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: ApplicationFiled: May 30, 2013Publication date: April 23, 2015Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Kazuhiro Obae, Masayuki Kakizawa, Mitsuo Yamashita
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Patent number: 8298585Abstract: 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: GrantFiled: June 4, 2008Date of Patent: October 30, 2012Assignee: Asahi Kasei Chemicals CorporationInventors: Masayuki Kakizawa, Hidetoshi Tomiyama
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Patent number: 8106100Abstract: 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: GrantFiled: December 5, 2006Date of Patent: January 31, 2012Assignee: Asahi Kasei Chemicals CorporationInventors: Masayuki Kakizawa, Shunichi Gomi, Yuichi Ozeki
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Publication number: 20100178332Abstract: 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: ApplicationFiled: June 4, 2008Publication date: July 15, 2010Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Masayuki Kakizawa, Hidetoshi Tomiyama
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Publication number: 20090163604Abstract: 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: ApplicationFiled: December 5, 2006Publication date: June 25, 2009Applicant: ASAHI KASEI CHEMICALS CORPORATIONInventors: Masayuki Kakizawa, Shunichi Gomi, Yuichi Ozeki