Patents by Inventor Ken-Ichiro Hiwatari
Ken-Ichiro Hiwatari 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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Publication number: 20240316250Abstract: A hybrid gel comprising a particulate decellularized tissue (obtained by pulverizing animal-derived biological tissues that are decellularized (decellularized biological tissues)), fibrinogen and thrombin; a cell culture material comprising the hybrid gel; a method for preparing the hybrid gel; and a kit comprising a particulate decellularized tissue and a biological tissue adhesive are provided. The hybrid gel of the present invention exerts the effect to promote differentiation and gain of function of stem cells and the therapeutic effect to a variety of diseases.Type: ApplicationFiled: June 5, 2024Publication date: September 26, 2024Applicants: NATIONAL UNIVERSITY CORPORATION TOKYO MEDICAL AND DENTAL UNIVERSITY, SAPPORO MEDICAL UNIVERSITY, ADEKA CORPORATION, KM Biologics Co., Ltd.Inventors: Junichi MATSUDA, Sumika MIYABASHIRA, Satomi HARANO, Akio KISHIDA, Tsuyoshi KIMURA, Jun NEGISHI, Tetsuya HIGAMI, Seiichi FUNAMOTO, Ken-Ichiro HIWATARI, Akiko TASAKI
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Publication number: 20220323647Abstract: A sheet of biological tissue which includes on at least one side tapered edge portion thinning down in the thickness direction, towards an end thereof, a tubular structure obtained from the sheet, and an artificial blood vessel made up of the tubular structure are provided.Type: ApplicationFiled: June 28, 2022Publication date: October 13, 2022Applicant: ADEKA CORPORATIONInventors: Ken-ichiro HIWATARI, Yu YAMAGUCHI, Takuya KIMURA, Akiko TASAKI
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Patent number: 11033661Abstract: An anti-adhesion material comprising decellularized tissues and a biocompatible polymer or fibrin glue; a method for preparing an anti-adhesion material comprising complexing a biocompatible polymer or fibrin glue to decellularized tissues; an anti-adhesion material kit comprising decellularized tissues and a biocompatible polymer or fibrin glue; a substitute biomembrane comprising decellularized tissues and a biocompatible polymer or fibrin glue; a method for preparing a substitute biomembrane comprising complexing a biocompatible polymer or fibrin glue to decellularized tissues; and a substitute biomembrane kit comprising decellularized tissues and a biocompatible polymer or fibrin glue.Type: GrantFiled: March 7, 2016Date of Patent: June 15, 2021Assignees: ADEKA CORPORATION, NATIONAL UNIVERSITY CORPORATION TOKYO MEDICAL AND DENTAL UNIVERSITY, SAPPORO MEDICAL UNIVERSITYInventors: Hideki Saga, Takanori Uchida, Shoko Tokorozaki, Ken-ichiro Hiwatari, Haruki Obara, Akio Kishida, Tsuyoshi Kimura, Jun Negishi, Tetsuya Higami, Seiichi Funamoto
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Publication number: 20200324024Abstract: The present invention addresses the problem of providing a decellularized tissue having excellent cell adhesion properties. Provided is a decellularized tissue prepared by decellularizing a biological tissue, said decellularized tissue being characterized in that the ratio of endothermic energy amount, in terms of dry mass, of the decellularized tissue to the biological tissue before the decellularization is 0.70 or greater when measured by differential scanning calorimetry. The ratio by mass of DNA amount, in terms of dry mass, of the decellularized tissue to the biological tissue before the decellularization may be 0.300 or smaller.Type: ApplicationFiled: June 19, 2020Publication date: October 15, 2020Inventors: Jun NEGISHI, Ken-ichiro HIWATARI, Kyohei OCHIAI
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Patent number: 10793603Abstract: A polysaccharide derivative has a partial structure represented by Formula (1) below. It is preferable that at least one of the amino acids that constitute X2 in Formula (1) below is a basic amino acid. (In the formula, X1 represents a residue obtained by removing the terminal amino group and the terminal carboxyl group from a neutral amino acid or an ?-aminoalkanoic acid, X2 represents a residue obtained by removing the terminal amino group and the terminal carboxyl group from a membrane-permeable peptide, X3 represents a hydroxyl group, an amino group, an alkoxyl group having 1 to 4 carbon atoms, or a benzyloxy group, a represents a number of 0 or 1, and b represents a number of from 0 to 50.Type: GrantFiled: February 23, 2016Date of Patent: October 6, 2020Assignees: JOSHO GAKUEN EDUCATIONAL FOUNDATION, ADEKA CORPORATIONInventors: Shinji Sakuma, Kohta Mohri, Ken-ichiro Hiwatari, Kyohei Ochiai
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Publication number: 20200114044Abstract: The present invention addresses the problem of providing a decellularized tissue having excellent cell adhesion properties. Provided is a decellularized tissue prepared by decellularizing a biological tissue, said decellularized tissue being characterized in that the ratio of endothermic energy amount, in terms of dry mass, of the decellularized tissue to the biological tissue before the decellularization is 0.70 or greater when measured by differential scanning calorimetry. The ratio by mass of DNA amount, in terms of dry mass, of the decellularized tissue to the biological tissue before the decellularization may be 0.300 or smaller.Type: ApplicationFiled: December 13, 2019Publication date: April 16, 2020Inventors: Jun NEGISHI, Ken-ichiro HIWATARI, Kyohei OCHIAI
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Patent number: 10501564Abstract: A polymer compound has a group represented by Formula (1) or Formula (2) in a side chain. (In Formula (1), X1 represents a neutral amino acid residue or an ?-aminoalkanoic acid residue, X2 represents a membrane-permeable peptide residue, X3 represents a hydroxyl group, an amino group, an alkoxyl group having 1 to 4 carbon atoms, or a benzyloxy group, and a represents a number of from 1 to 50.) (In Formula (2), X4 represents a neutral amino acid residue or an ?-aminoalkanoic acid residue, X5 represents a membrane-permeable peptide residue, X6 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a benzyl group, an acyl group having 1 to 6 carbon atoms, an arylsulfonyl group, or a carboxyl group, and b represents a number of from 1 to 50.).Type: GrantFiled: February 23, 2016Date of Patent: December 10, 2019Assignees: JOSHO GAKUEN EDUCATIONAL FOUNDATION, ADEKA CORPORATIONInventors: Shinji Sakuma, Kohta Mohri, Ken-ichiro Hiwatari, Kyohei Ochiai
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Publication number: 20180296728Abstract: A sheet of biological tissue which includes on at least one side tapered edge portion thinning down in the thickness direction, towards an end thereof, a tubular structure obtained from the sheet, and an artificial blood vessel made up of the tubular structure are provided.Type: ApplicationFiled: May 31, 2016Publication date: October 18, 2018Applicant: ADEKA CORPORATIONInventors: Ken-ichiro HIWATARI, Yu YAMAGUCHI, Takuya KIMURA, Akiko TASAKI
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Publication number: 20180078679Abstract: An anti-adhesion material comprising decellularized tissues and a biocompatible polymer or fibrin glue; a method for preparing an anti-adhesion material comprising complexing a biocompatible polymer or fibrin glue to decellularized tissues; an anti-adhesion material kit comprising decellularized tissues and a biocompatible polymer or fibrin glue; a substitute biomembrane comprising decellularized tissues and a biocompatible polymer or fibrin glue; a method for preparing a substitute biomembrane comprising complexing a biocompatible polymer or fibrin glue to decellularized tissues; and a substitute biomembrane kit comprising decellularized tissues and a biocompatible polymer or fibrin glue.Type: ApplicationFiled: March 7, 2016Publication date: March 22, 2018Applicants: THE CHEMO-SERO-THERAPEUTIC RESEARCH INSTITUTE, ADEKA CORPORATION, NATIONAL UNIVERSITY CORPORATION TOKYO MEDICAL AND DENTAL UNIVERSITY, SAPPORO MEDICAL UNIVERSITYInventors: Hideki SAGA, Takanori UCHIDA, Shoko TOKOROZAKI, Ken-ichiro HIWATARI, Haruki OBARA, Akio KISHIDA, Tsuyoshi KIMURA, Jun NEGISHI, Tetsuya HIGAMI, Seiichi FUNAMOTO
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Publication number: 20180044381Abstract: A polysaccharide derivative has a partial structure represented by Formula (1) below. It is preferable that at least one of the amino acids that constitute X2 in Formula (1) below is a basic amino acid. (In the formula, X1 represents a residue obtained by removing the terminal amino group and the terminal carboxyl group from a neutral amino acid or an ?-aminoalkanoic acid, X2 represents a residue obtained by removing the terminal amino group and the terminal carboxyl group from a membrane-permeable peptide, X3 represents a hydroxyl group, an amino group, an alkoxyl group having 1 to 4 carbon atoms, or a benzyloxy group, a represents a number of 0 or 1, and b represents a number of from 0 to 50.Type: ApplicationFiled: February 23, 2016Publication date: February 15, 2018Inventors: Shinji SAKUMA, Kohta MOHRI, Ken-ichiro HIWATARI, Kyohei OCHIAI
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Publication number: 20180028722Abstract: The present invention addresses the problem of providing a decellularized tissue having excellent cell adhesion properties. Provided is a decellularized tissue prepared by decellularizing a biological tissue, said decellularized tissue being characterized in that the ratio of endothermic energy amount, in terms of dry mass, of the decellularized tissue to the biological tissue before the decellularization is 0.70 or greater when measured by differential scanning calorimetry. The ratio by mass of DNA amount, in terms of dry mass, of the decellularized tissue to the biological tissue before the decellularization may be 0.300 or smaller.Type: ApplicationFiled: February 19, 2016Publication date: February 1, 2018Inventors: Jun NEGISHI, Ken-ichiro HIWATARI, Kyohei OCHIAI
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Publication number: 20180016366Abstract: A polymer compound has a group represented by Formula (1) or Formula (2) in a side chain. (In Formula (1), X1 represents a neutral amino acid residue or an ?-aminoalkanoic acid residue, X2 represents a membrane-permeable peptide residue, X3 represents a hydroxyl group, an amino group, an alkoxyl group having 1 to 4 carbon atoms, or a benzyloxy group, and a represents a number of from 1 to 50.) (In Formula (2), X4 represents a neutral amino acid residue or an ?-aminoalkanoic acid residue, X5 represents a membrane-permeable peptide residue, X6 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a benzyl group, an acyl group having 1 to 6 carbon atoms, an arylsulfonyl group, or a carboxyl group, and b represents a number of from 1 to 50.Type: ApplicationFiled: February 23, 2016Publication date: January 18, 2018Inventors: Shinji SAKUMA, Kohta MOHRI, Ken-ichiro HIWATARI, Kyohei OCHIAI
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Publication number: 20160058910Abstract: A particulate decellularized tissue is provided which shows sufficiently effective tissue regeneration and does not show cytotoxicity when used as material for cell culture. In accordance with the method for preparing a particulate decellularized tissue comprising a step of applying a high hydrostatic pressure to animal-derived tissues in a medium, a particulate decellularized tissue is obtained which does not show cytotoxicity but shows the effect of cellular attraction and the effect of induction of cellular differentiation and shows a high effect of tissue regeneration.Type: ApplicationFiled: May 2, 2014Publication date: March 3, 2016Applicants: NATIIONAL UNIVERSITY CORPORATION TOKYO MEDICAL AND DENTAL UNIVERSITY, ADEKA CORPORATIONInventors: Akio KISHIDA, Tsuyoshi KIMURA, Jun NEGISHI, Ken-ichiro HIWATARI, Akiko TASAKI
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Publication number: 20160051731Abstract: A hybrid gel comprising a particulate decellularized tissue (obtained by pulverizing animal-derived biological tissues that are decellularized (decellularized biological tissues)), fibrinogen and thrombin; a cell culture material comprising the hybrid gel; a method for preparing the hybrid gel; and a kit comprising a particulate decellularized tissue and a biological tissue adhesive are provided. The hybrid gel of the present invention exerts the effect to promote differentiation and gain of function of stem cells and the therapeutic effect to a variety of diseases.Type: ApplicationFiled: May 2, 2014Publication date: February 25, 2016Applicants: THE CHEMO-SERO-THERAPEUTIC RESEARCH INSTITUTE, NATIONAL UNIVERSITY CORPORATION TOKYO MEDICAL AND DENTAL UNIVERSITY, SAPPORO MEDICAL UNIVERSITY, ADEKA CORPORATIONInventors: Junichi MATSUDA, Sumika MIYABASHIRA, Satomi HARANO, Akio KISHIDA, Tsuyoshi KIMURA, Jun NEGISHI, Tetsuya HIGAMI, Seiichi FUNAMOTO, Ken-ichiro HIWATARI, Akiko TASAKI
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Patent number: 8937122Abstract: A compound has excellent thermal resistance and compatibility with resins, improves thermal resistance of resins, and specifically provides a compound represented by the following general formula (1). In formula (1), R1 to R4 each represent a C1-12 alkyl group or a C6-12 aryl group, y represents a number 1-2,000, and X1 represents a group represented by the formula (2) or (3). In formula (2), R5 represents a hydrogen atom, O., a C1-12 alkyl group or a C1-12 alkoxy group, L1 represents a C1-6 alkylene group or a C6-12 arylene group. In formula (3), R6 represents a C1-4 alkyl group or a C6-12 aryl group, X2 represents a group represented by the formula (2) or a hydrogen atom, s represents a number 2-6, L2 represents a C1-6 alkylene group or a C6-12 arylene group, and at least one of s number of X2s is the group represented by the formula (2).Type: GrantFiled: November 15, 2011Date of Patent: January 20, 2015Assignee: Adeka CoporationInventors: Ken-ichiro Hiwatari, Tomoaki Saiki
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Patent number: 8735177Abstract: A diagnostic marker is composed of particles that have a diameter of from 1 nm to 100 ?m, the particles possessing on their surfaces a site that has a high specific bonding ability to a specific antigen residing on the mucosa of digestive cancers and a site that has a low bonding ability to the mucosa of digestive organs, and further incorporating an identification material.Type: GrantFiled: February 20, 2007Date of Patent: May 27, 2014Assignee: Adeka CorporationInventors: Shinji Sakuma, Shinji Yamashita, Ken-Ichiro Hiwatari, Yoshikazu Shoji
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Patent number: 8470937Abstract: Provided are a curable composition for semiconductor encapsulation which produces a cured product that is excellent in heat resistance, electrical insulation properties at high temperatures, flexibility and heat cycle resistance, and a semiconductor device encapsulated by curing this curable composition. Specifically, there is provided a curable composition for semiconductor encapsulation containing, as component (A), a particular SiH group-containing siloxane compound; as component (B), a particular vinyl group-containing siloxane compound; as component (C), a compound having at least three SiH groups or at least three vinyl groups; and as component (D), a hydrosilylation catalyst.Type: GrantFiled: May 26, 2011Date of Patent: June 25, 2013Assignee: Adeka CorporationInventors: Ken-ichiro Hiwatari, Isamu Yumoto
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Publication number: 20130018132Abstract: A compound has excellent thermal resistance and compatibility with resins, improves thermal resistance of resins, and specifically provides a compound represented by the following general formula (1). In formula (1), R1 to R4 each represent a C1-12 alkyl group or a C6-12 aryl group, y represents a number 1-2,000, and X1 represents a group represented by the formula (2) or (3). In formula (2), R5 represents a hydrogen atom, O., a C1-12 alkyl group or a C1-12 alkoxy group, L1 represents a C1-6 alkylene group or a C6-12 arylene group. In formula (3), R6 represents a C1-4 alkyl group or a C6-12 aryl group, X2 represents a group represented by the formula (2) or a hydrogen atom, s represents a number 2-6, L2 represents a C1-6 alkylene group or a C6-12 arylene group, and at least one of s number of X2s is the group represented by the formula (2).Type: ApplicationFiled: November 15, 2011Publication date: January 17, 2013Applicant: ADEKA CORPORATIONInventors: Ken-ichiro Hiwatari, Tomoaki Saiki
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Publication number: 20120126435Abstract: Provided are a curable composition for semiconductor encapsulation which produces a cured product that is excellent in heat resistance, electrical insulation properties at high temperatures, flexibility and heat cycle resistance, and a semiconductor device encapsulated by curing this curable composition. Specifically, there is provided a curable composition for semiconductor encapsulation containing, as component (A), a particular SiH group-containing siloxane compound; as component (B), a particular vinyl group-containing siloxane compound; as component (C), a compound having at least three SiH groups or at least three vinyl groups; and as component (D), a hydrosilylation catalyst.Type: ApplicationFiled: May 26, 2011Publication date: May 24, 2012Applicant: ADEKA CORPORATIONInventors: Ken-ichiro Hiwatari, Isamu Yumoto
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Patent number: 8003736Abstract: A silicon-containing compound of formula (1), and a curing composition containing a silicon-containing compound of formula (1) wherein Z is hydrogen, a silicon-containing compound of formula (1) wherein Z is C2-C4 alkenyl or alkynyl and a hydrosilylation catalyst. The composition has excellent handling and curing properties and provides a cured product with excellent heat resistance and flexibility. In formula (1), Ra-Rg=C1-C12 saturated aliphatic hydrocarbon group or C6-C12 aromatic hydrocarbon group. Re and Rf do not simultaneously represent C1-C12 saturated aliphatic hydrocarbon group; Y=C2-C4 alkylene; Z=hydrogen or C2-C4 alkenyl or alkynyl; K is 2-7; T is 1-7; P is 0-3; and M and N are numbers selected such that N:M=1:1 to 1:100, that all M's and N's total at least 15, and that the mass average molecular weight of the compound of formula (1) is 3,000 to 1,000,000.Type: GrantFiled: April 21, 2008Date of Patent: August 23, 2011Assignee: Adeka CorporationInventors: Takashi Sueyoshi, Ken-ichiro Hiwatari, Tadashi Janado, Yoshikazu Shoji, Seiichi Saito, Yoshitaka Sugawara