Patents by Inventor Takehiko Ishii

Takehiko Ishii 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: 9263743
    Abstract: (A) A cathode active material of a cathode includes a lithium phosphate compound represented by LiaM1bPO4 (M is Fe and the like, 0?a?2, b?1). (B) Fine pore distribution of the cathode measured by a mercury intrusion method indicates a peak P1 in a range where a pore diameter is equal to or more than about 0.01 micrometers and less than about 0.15 micrometers, and indicates a peak P2 in a range where the pore diameter is from about 0.15 micrometers to about 0.9 micrometers both inclusive. (C) A ratio I2/I1 between intensity I1 of the peak P1 and intensity I2 of the peak P2 is from about 0.5 to about 20 both inclusive. (D) Porosity of the cathode is from about 30 percent to about 50 percent both inclusive.
    Type: Grant
    Filed: May 14, 2013
    Date of Patent: February 16, 2016
    Assignee: Sony Corporation
    Inventors: Tadashi Matsushita, Takaaki Matsui, Takehiko Ishii
  • Patent number: 9245012
    Abstract: An information classification system includes a server including a knowledge base that receives classification information to be classified, conducts language analysis of the classification information to acquire and classify a plurality of keywords into elements made up of a classification target word and a related word that modifies the classification target word, and conducts a search with the related word, so as to assign a classification identification value to the information; a classification candidate extraction section that extracts the classification identification value that the knowledge base assigns to generate an automatic classification result; and a classification update section that receives the automatic classification result and corrects registered items in the knowledge base with a correction value received through a GUI for classification confirmation while referring to log data that is a processing history about automatic classification for the language analysis and the element classific
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: January 26, 2016
    Assignee: International Business Machines Corporation
    Inventors: Daisuke Maruyama, Kazuo Aoki, Takehiko Ishii
  • Publication number: 20150270531
    Abstract: A battery comprising a positive electrode; a negative electrode including a negative electrode active material layer that is formed on at least one surface of a negative electrode collector; and an electrolyte, wherein in the negative electrode active material layer from the negative electrode collector up to ½ of a layer thickness in a surface direction of the negative electrode active material layer, a pore volume ratio expressed as (pore volume B/pore volume A) that is a ratio of a pore volume A (ml/g) in a range of 0.001 ?m or more and 0.4 ?m or less of a pore diameter measured by a mercury porosimeter and a pore volume B (ml/g) in a range of 0.4 ?m or more and 10 ?m or less of the pore diameter is 1.4 or more and 3.4 or less.
    Type: Application
    Filed: June 3, 2015
    Publication date: September 24, 2015
    Inventors: Takaaki MATSUI, Aya MASHIKO, Tadashi MATSUSHITA, Takehiko ISHII
  • Patent number: 9114177
    Abstract: A block copolymer includes a polyamino acid chain segment and a hydrophilic polymer chain segment. The polyamino acid chain segment includes at least one amino acid residue having a side chain that contains a cationic group and at least one amino acid residue having a side chain that contains a substituted phenylboronic acid group. In the substituted phenylboronic acid group, at least one hydrogen of the phenyl ring is substituted so that the phenylboronic acid group has a pKa of less than 8. Such a block copolymer serves as a carrier that simultaneously imparts stability to a biotechnology-based drug in blood and provides suitable drug-releasing properties of the drug at an affected area.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: August 25, 2015
    Assignees: THE UNIVERSITY OF TOKYO, NATIONAL UNIVERSITY CORPORATION TOKYO MEDICAL AND DENTAL UNIVERSITY, NANOCARRIER CO., LTD.
    Inventors: Kazunori Kataoka, Takehiko Ishii, Mitsuru Naito, Akira Matsumoto, Yasuki Kato
  • Patent number: 9054364
    Abstract: A battery includes a positive electrode, a negative electrode where a negative electrode active material layer containing a negative electrode active material containing natural graphite is formed on at least one surface of a negative electrode collector, and an electrolyte. A thickness of the negative electrode active material layer per one surface of the negative electrode collector is 50 ?m or more and 100 ?m or less, and in the negative electrode active material layer from the negative electrode collector up to ½ of the thickness of the layer in a surface direction of the negative electrode active material layer, an orientation degree A expressed as (peak intensity of carbon 002 face/peak intensity of carbon 110 face) that is a peak intensity ratio of a carbon 002 face and a carbon 110 face measured by an X-ray diffraction is 100 or more and 500 or less.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: June 9, 2015
    Assignee: SONY CORPORATION
    Inventors: Takaaki Matsui, Aya Mashiko, Tadashi Matsushita, Takehiko Ishii
  • Patent number: 9051354
    Abstract: The present invention provides a protein delivery means (e.g., a polyion complex) which allows efficient introduction into cells (particularly into the cytoplasm), is highly stable in serum, and is also widely applicable. The polyion complex of the present invention comprises a cationic polymer having a polycation moiety and a charge-conversional protein whose overall charge is converted from basic or neutral to acidic by a specific charge regulator.
    Type: Grant
    Filed: September 17, 2009
    Date of Patent: June 9, 2015
    Assignee: THE UNIVERSITY OF TOKYO
    Inventors: Kazunori Kataoka, Nobuhiro Nishiyama, Yan Lee, Takehiko Ishii
  • Patent number: 9017875
    Abstract: The present application provides a nonaqueous electrolyte secondary battery which includes a cathode having a cathode active material layer, an anode, and a nonaqueous electrolyte, wherein the cathode active material layer includes secondary particles of a lithium phosphate compound having olivine structure, an average particle diameter A of primary particles constituting the secondary particles is 50 nm or more and 500 nm or less, and a ratio B/A of a pore diameter B of the secondary particles to the average particle diameter A of the primary particles is 0.10 or more and 0.90 or less.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: April 28, 2015
    Assignee: Sony Corporation
    Inventor: Takehiko Ishii
  • Publication number: 20150051347
    Abstract: A block copolymer includes a polyamino acid chain segment and a hydrophilic polymer chain segment. The polyamino acid chain segment includes at least one amino acid residue having a side chain that contains a cationic group and at least one amino acid residue having a side chain that contains a substituted phenylboronic acid group. In the substituted phenylboronic acid group, at least one hydrogen of the phenyl ring is substituted so that the phenylboronic acid group has a pKa of less than 8. Such a block copolymer serves as a carrier that simultaneously imparts stability to a biotechnology-based drug in blood and provides suitable drug-releasing properties of the drug at an affected area.
    Type: Application
    Filed: November 19, 2012
    Publication date: February 19, 2015
    Applicants: THE UNIVERSITY OF TOKYO, NATIONAL UNIVERSITY CORPORATION TOKYO MEDICAL AND DENTAL UNIVERSITY, NANOCARRIER CO., LTD.
    Inventors: Kazunori Kataoka, Takehiko Ishii, Mitsuru Naito, Akira Matsumoto, Yasuki Kato
  • Publication number: 20140370337
    Abstract: A secondary battery includes a cathode, an anode, and a non-aqueous electrolytic solution. The cathode includes a cathode current collector, and a cathode active material layer provided on the cathode current collector. The cathode active material layer is configured of a single layer and includes a plurality of cathode active material particles. When the cathode active material layer is divided, at one or more arbitrary positions, into two or more layers, an average particle size of the cathode active material particles in an uppermost layer is smaller than an average particle size of the cathode active material particles in a lowermost layer in the two or more layers of the divided cathode active material layer.
    Type: Application
    Filed: June 5, 2014
    Publication date: December 18, 2014
    Inventors: Takaaki MATSUI, Takehiko ISHII
  • Patent number: 8906503
    Abstract: Fine particles of crystalline polyol are provided having a cationic polymer fixed on the crystal surfaces. These fine particles can stably carry an anionically charged compound on their surfaces.
    Type: Grant
    Filed: May 13, 2010
    Date of Patent: December 9, 2014
    Assignee: University of Tokyo
    Inventors: Kazunori Kataoka, Kanjiro Miyata, Nobuhiro Nishiyama, Takehiko Ishii, Tomoya Suma
  • Publication number: 20140141303
    Abstract: An anode includes an anode double side coating section; a first anode single-side coating section; and an anode double side non-coating section, the anode double side non-coating section, the first anode single-side coating section, and the anode double side coating section are provided in this order from a first end on the side of spiral winding start of the anode, and in an anode, (“Area density of an anode mixture layer on the first main surface side of the first anode single-side coating section”)/(“Area density of the anode mixture layer on the first main surface side of sections other than the first anode single-side coating section”) is equal to or more than about 1.2.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 22, 2014
    Applicant: Sony Corporation
    Inventors: Tadashi Matsushita, Koji Morita, Hisashi Tsujimoto, Takashi Ono, Takehiko Ishii
  • Publication number: 20140120417
    Abstract: There is provided a battery including a positive electrode, and a negative electrode. At least one electrode of the positive electrode and the negative electrode includes a current collector, a mixture layer over one main surface of the current collector, the mixture layer including a gap through which a part of the current collector is exposed, a lead bonded to an exposed surface of the current collector exposed through the gap, and a protective layer configured to protect the current collector, at least a part of the protective layer being over the exposed surface of the current collector and interposed between a part of the lead and the exposed surface. The part of the lead includes at least a part of a peripheral edge of the lead.
    Type: Application
    Filed: October 9, 2013
    Publication date: May 1, 2014
    Applicant: Sony Corporation
    Inventors: Tadashi Matsushita, Takehiko Ishii
  • Publication number: 20140058598
    Abstract: A cathode active material includes a first cathode material configured of a layered rocksalt type lithium metal oxide, the layered rocksalt type lithium metal oxide including lithium and a metal other than lithium, the metal configured of nickel (Ni), or nickel (Ni) and the like. A site occupancy of metal ions other than lithium at a 3a site obtained by Rietveld analysis of a powder X-ray diffraction pattern of the first cathode material in a cathode in a discharged state is about 5% or less, and a site occupancy of metal ions other than the metal occupying a part of a 3b site at the 3b site is about 1% or over, and the cathode active material is covered with a coating film, and an exposed amount of the cathode active material exposed from the coating film is within a range from about 0.05% to about 8% both inclusive.
    Type: Application
    Filed: August 7, 2013
    Publication date: February 27, 2014
    Applicant: Sony Corporation
    Inventors: Takaaki Matsui, Takehiko Ishii
  • Publication number: 20130330623
    Abstract: (A) A cathode active material of a cathode includes a lithium phosphate compound represented by LiaM1bPO4 (M is Fe and the like, 0?a?2, b?1). (B) Fine pore distribution of the cathode measured by a mercury intrusion method indicates a peak P1 in a range where a pore diameter is equal to or more than about 0.01 micrometers and less than about 0.15 micrometers, and indicates a peak P2 in a range where the pore diameter is from about 0.15 micrometers to about 0.9 micrometers both inclusive. (C) A ratio I2/I1 between intensity I1 of the peak P1 and intensity I2 of the peak P2 is from about 0.5 to about 20 both inclusive. (D) Porosity of the cathode is from about 30 percent to about 50 percent both inclusive.
    Type: Application
    Filed: May 14, 2013
    Publication date: December 12, 2013
    Applicant: Sony Corporation
    Inventors: Tadashi Matsushita, Takaaki Matsui, Takehiko Ishii
  • Publication number: 20130260217
    Abstract: A battery includes a positive electrode, a negative electrode where a negative electrode active material layer containing a negative electrode active material containing natural graphite is formed on at least one surface of a negative electrode collector, and an electrolyte. A thickness of the negative electrode active material layer per one surface of the negative electrode collector is 50 ?m or more and 100 ?m or less, and in the negative electrode active material layer from the negative electrode collector up to ½ of the thickness of the layer in a surface direction of the negative electrode active material layer, an orientation degree A expressed as (peak intensity of carbon 002 face/peak intensity of carbon 110 face) that is a peak intensity ratio of a carbon 002 face and a carbon 110 face measured by an X-ray diffraction is 100 or more and 500 or less.
    Type: Application
    Filed: March 26, 2013
    Publication date: October 3, 2013
    Applicant: Sony Corporation
    Inventors: Takaaki Matsui, Aya Mashiko, Tadashi Matsushita, Takehiko Ishii
  • Patent number: 8546487
    Abstract: The present invention provides an efficient delivery system for a nucleic acid, more specifically, a cationic poly(amino acid) that has a side chain having a plurality of different amine functional groups in a moiety including a cationic group and that has a hydrophobic group introduced into part of the side chain, and a polyion complex (PIC) of the poly(amino acid) and an oligo- or polynucleotide.
    Type: Grant
    Filed: February 15, 2010
    Date of Patent: October 1, 2013
    Assignee: The University of Tokyo
    Inventors: Kazunori Kataoka, Shourong Wu, Takehiko Ishii, HyunJin Kim, Kanjiro Miyata, Nobuhiro Nishiyama
  • Publication number: 20130109743
    Abstract: An excellent nucleic acid delivery composition is provided which has reduced cytotoxicity and improved nucleic acid introduction efficiency and gene expression efficiency. The composition comprises: a block copolymer having an uncharged hydrophilic polymer segment and a cationic polymer segment; a cationic polymer; and a nucleic acid, wherein the mol percentage (B/H ratio) of the cationic groups of the block copolymer to the total cationic groups of the block copolymer and the cationic polymer is between 25% and 90%.
    Type: Application
    Filed: July 11, 2011
    Publication date: May 2, 2013
    Applicant: The University of Tokyo
    Inventors: Kazunori Kataoka, Takehiko Ishii, Kensuke Osada, Qixian Chen, Keiji Itaka, Satoshi Uchida
  • Publication number: 20130066264
    Abstract: Disclosed are a sugar-responsive gel and a medicine administering device having a pKa more suitable for use in a body environment and capable of administering medicine more autonomously than before. A sugar-responsive gel and an insulin administering device having a pKa more suitable for use in a body environment and capable of administering insulin more autonomously than before, wherein under a body condition of pKa of 7.4 or less and temperature of 35° C.-40° C., when the glucose concentration increases, insulin can be released from a gel body in response thereto, and when the glucose concentration decreases, insulin release from the gel body can be suppressed.
    Type: Application
    Filed: May 24, 2011
    Publication date: March 14, 2013
    Applicant: NATIONAL INSTITUTE FOR MATERIALS SCIENCE
    Inventors: Akira Matsumoto, Takehiko Ishii, Kazunori Kataoka, Yuji Miyahara
  • Publication number: 20130029225
    Abstract: A secondary battery includes: a cathode including an active material; an anode; and an electrolytic solution. The active material has a composition represented by Formula (1) described below. A median diameter (D90) of the active material is from about 10.5 micrometers to about 60 micrometers both inclusive, the median diameter (D90) being measured by a laser diffraction method. A half bandwidth (2?) of a diffraction peak corresponding to a (020) crystal plane of the active material is from about 0.15 degrees to about 0.24 degrees both inclusive, the half bandwidth (2?) being measured by an X-ray diffraction method. LiaMnbFecMdPO4??(1) where M represents one or more of Mg, Ni, Co, Al, W, Nb, Ti, Si, Cr, Cu, and Zn; and 0<a?2, 0<b<1, 0<c<1, 0?d<1, and b+c+d=1 are established.
    Type: Application
    Filed: July 25, 2012
    Publication date: January 31, 2013
    Applicant: SONY CORPORATION
    Inventors: Takaaki Matsui, Tadashi Matsushita, Takehiko Ishii
  • Publication number: 20120283403
    Abstract: Disclosed are a phenylboronic acid monomer and a phenylboronic acid polymer, each of which can have a pKa value suitable for the use under physiological environments and can be used for various applications. The pheanylboronic acid monomer has a structure represented by formula (13) and therefore has high hydrophilicity, can have a satisfactorily low pKa value when the phenyl ring is fluorinated, and can have a polymerizable unsaturated bond. The phenylboronic acid monomer has high hydrophilicity at a pKa value of 7.4 or less which is a physiological level, and can be polymerized with a wide variety of monomers to produce polymers suitable for the intended purposes.
    Type: Application
    Filed: December 27, 2010
    Publication date: November 8, 2012
    Applicant: National Institute for Materials Science
    Inventors: Akira Matsumoto, Takehiko Ishii, Kazunori Kataoka, Yuji Miyahara