Patents by Inventor Takaya Kubo

Takaya Kubo 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: 10147554
    Abstract: Provided is an energy storage dye-sensitized solar cell having a simple structure. An energy storage dye-sensitized solar cell of the present invention has a photoelectrode and a charge storage electrode on the same surface of a conductive substrate such that the photoelectrode and the charge storage electrode act as one electrode. Hence, the energy storage dye-sensitized solar cell comprises two electrodes: the above-described one electrode and a counter electrode covered with a catalyst, thus having a simple structure.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: December 4, 2018
    Assignee: The University of Tokyo
    Inventors: Hiroshi Segawa, Mari Sasaki, Takaya Kubo, Satoshi Uchida
  • Publication number: 20170018370
    Abstract: Provided is an energy storage dye-sensitized solar cell having a simple structure. An energy storage dye-sensitized solar cell (1) of the present invention has a photoelectrode (2) and a charge storage electrode (3) on the same surface of a conductive substrate (5) such that the photoelectrode (2) and the charge storage electrode (3) act as one electrode. Hence, the energy storage dye-sensitized solar cell comprises two electrodes: the above-described one electrode and a counter electrode (9) covered with a catalyst (4), thus having a simple structure.
    Type: Application
    Filed: November 21, 2014
    Publication date: January 19, 2017
    Inventors: Hiroshi Segawa, Mari Sasaki, Takaya Kubo, Satoshi Uchida
  • Patent number: 8941008
    Abstract: A photoelectric-conversion-device dye comprising a ruthenium metal complex, which includes a molecule including elemental phosphorous and the molecule forms a coordinate bond at least at the phosphorous atom, and which also includes a terpyridine derivative that forms a coordinate bond and has at least one adsorbing group that exhibits adsorptivity toward a metal oxide. The adsorbing group is selected from the group consisting of a carboxylic acid group, an ester thereof, or a salt thereof; a phosphonic acid group, an ester thereof, or a salt thereof; a hydroxyl group; an alkoxy group; and a sulfonic acid group or salt thereof. The dye exhibits absorption over a wide range from the visible light region to the near-infrared region, and as a result, a photoelectric conversion film, an electrode, and a solar cell having improved photoelectric conversion efficiency are provided.
    Type: Grant
    Filed: March 6, 2012
    Date of Patent: January 27, 2015
    Assignees: The University of Tokyo, Tanaka Kikinzoku Kogyo K.K.
    Inventors: Hiroshi Segawa, Takumi Kinoshita, Jun-ichi Fujisawa, Jotaro Nakazaki, Satoshi Uchida, Takaya Kubo
  • Publication number: 20140083491
    Abstract: Provided is a pigment for a photoelectric converter that has broad absorption from the visible to the near infrared regions. The pigment for a photoelectric converter comprises at least molecules that contain elemental phosphorus and form coordinate bonds at least at these phosphorus atoms and one type of metal complex that forms coordinate bonds with a terpyridine derivative that has at least one adsorbing group capable of being adsorbed by a metal oxide. The metal complex is the pigment for a photoelectric converter showing absorption derived from spin-forbidden transition.
    Type: Application
    Filed: March 6, 2012
    Publication date: March 27, 2014
    Applicant: THE UNIVERSITY OF TOKYO
    Inventors: Hiroshi Segawa, Takumi Kinoshita, Jun-ichi Fujisawa, Jotaro Nakazaki, Satoshi Uchida, Takaya Kubo
  • Patent number: 7977131
    Abstract: The present invention provides a method of manufacturing a nano-array electrode with a controlled nano-structure by filling a compound having an electron-accepting structure or an electron donating structure into the fine pores of an anodic-oxide porous alumina film obtained by anodically oxidizing aluminum in electrolyte. The spaces defined between the nano-arrays formed of the compound by removing the alumina film are filled with a compound having an electron-donating structure if the nano-arrays have an electron-accepting structure and a compound having an electron-accepting structure if the nano-arrays have an electron-donating structure. A high-performance, high-efficiency photoelectric converting device comprising a nano-array electrode manufactured by the method is also disclosed.
    Type: Grant
    Filed: December 21, 2009
    Date of Patent: July 12, 2011
    Assignee: Nippon Oil Corporation
    Inventors: Tsuyoshi Asano, Takaya Kubo, Yoshinori Nishikitani
  • Publication number: 20110011459
    Abstract: There is provided a hybrid and/or complex material or the like which can realize a high-efficient photoelectric conversion material or the like. One aspect of the present invention lies in a dye-sensitized solar cell device 10, characterized by including: a first substrate 11; a first conductive layer 12 formed on the first substrate; a Pt catalyst layer formed on the first conductive layer; an electrolyte layer 13 formed on the Pt catalyst layer; a dye-adsorbed metal oxide layer 14 formed on the electrolyte layer in which 7,7,8,8-tetracyanoquinodimethane is adsorbed to an anatase type titanium oxide; a second conductive layer 15 formed on the dye-adsorbed metal oxide layer; and a second substrate 16 formed on the second conductive layer. According to this composition above, there is obtained a high-efficient dye-sensitized solar cell device in which light can be converted efficiently over wide wavelengths.
    Type: Application
    Filed: March 7, 2009
    Publication date: January 20, 2011
    Applicants: THE UNIVERSITY OF TOKYO, NIPPON OIL CORPORATION
    Inventors: Hiroshi Segawa, Jun-ichi Fujisawa, Takaya Kubo, Satoshi Uchida
  • Publication number: 20100132772
    Abstract: The present invention provides a method of manufacturing a nano-array electrode with a controlled nano-structure by filling a compound having an electron-accepting structure or an electron donating structure into the fine pores of an anodic-oxide porous alumina film obtained by anodically oxidizing aluminum in electrolyte. The spaces defined between the nano-arrays formed of the compound by removing the alumina film are filled with a compound having an electron-donating structure if the nano-arrays have an electron-accepting structure and a compound having an electron-accepting structure if the nano-arrays have an electron-donating structure. A high-performance, high-efficiency photoelectric converting device comprising a nano-array electrode manufactured by the method is also disclosed.
    Type: Application
    Filed: December 21, 2009
    Publication date: June 3, 2010
    Applicant: NIPPON OIL CORPORATION
    Inventors: Tsuyoshi Asano, Takaya Kubo, Yoshinori Nishikitani
  • Patent number: 7687431
    Abstract: A nanotube-shaped titania having an aspect ratio of 6 or greater can be produced by anodizing a titanium metal or an alloy containing mainly titanium in an electrolyte solution containing a halogen atom-containing ion, such as a perchloric acid aqueous solution.
    Type: Grant
    Filed: September 15, 2006
    Date of Patent: March 30, 2010
    Assignees: Nippon Oil Corporation, Kanagawa Academy of Science and Technology
    Inventors: Keisuke Nakayama, Takaya Kubo, Yoshinori Nishikitani, Hideki Masuda
  • Publication number: 20100006134
    Abstract: A nanotube-shaped titania having an aspect ratio of 6 or greater can be produced by anodizing a titanium metal or an alloy containing mainly titanium in an electrolyte solution containing a halogen atom-containing ion, such as a perchloric acid aqueous solution.
    Type: Application
    Filed: September 15, 2006
    Publication date: January 14, 2010
    Applicants: Nippon Oil Corporation, Kanagawa Academy of Science and Technology
    Inventors: Keisuke Nakayama, Takaya Kubo, Yoshinori Nishikitani, Hideki Masuda
  • Publication number: 20090078307
    Abstract: A three-pole two-layer photo-rechargeable battery has a laminated two-layered structure that includes a solar battery cell, a storage cell, and a common electrode therebetween. The solar battery cell has a structure wherein a photo-electrode, which has a photo-sensitized dye and a semiconductor layer on a conductive substrate with optical transparency, counters via a first electrolytic solution a common electrode that has a catalyst layer on a conductive substrate. The storage cell has a structure wherein the common electrode, which has a first conductive polymer layer on a conductive substrate on a side opposite the catalyst layer, counters via a second electrolytic solution a storage cell counter electrode that has a second conductive polymer layer on a conductive substrate.
    Type: Application
    Filed: March 25, 2008
    Publication date: March 26, 2009
    Applicants: THE UNIVERSITY OF TOKYO, NISSAN CHEMICAL INDUSTRIES, LTD.
    Inventors: Hiroshi Segawa, Yosuke Saito, Satoshi Uchida, Takaya Kubo, Satoshi Fujita, Tadayuki Isaji
  • Publication number: 20060234505
    Abstract: The present invention provides a method of manufacturing a nano-array electrode with a controlled nano-structure by filling an electrode material into the fine pores of an anodic-oxide porous alumina film obtained by anodically oxidizing aluminum in electrolyte, or by filling a material into the fine pores of an anodic-oxide porous alumina film obtained by anodically oxidizing aluminum in electrolyte and then filling an electrode material into the spaces defined by the nano-array formed by removing the anodic-oxide porous alumina film, or by filling repeatedly an electrode material in the fine pores of the anodic-oxide porous alumina film to fill a plurality of electrode materials. A high-performance, high-efficiency photoelectric converting device comprising a nano-array electrode manufactured by the method is also disclosed.
    Type: Application
    Filed: June 15, 2006
    Publication date: October 19, 2006
    Applicant: Nippon Oil Corporation
    Inventors: Tsuyoshi Asano, Takaya Kubo, Yoshinori Nishikitani
  • Patent number: 6816298
    Abstract: An electrochromic element comprises an ion conduction layer between two conducting substrates, at least one of which is transparent. The ion conduction layer contains an organic compounds, which has both a structure exhibiting a cathodic electrochromic characteristic and a structure exhibiting an anodic electrochromic characteristic.
    Type: Grant
    Filed: February 10, 2003
    Date of Patent: November 9, 2004
    Assignee: Nippon Mitsubishi Oil Corporation
    Inventors: Yoshinori Nishikitani, Keizo Iaki, Masaaki Kobayashi, Hiroshi Imafuku, Masaki Minami, Takaya Kubo
  • Publication number: 20040079926
    Abstract: The present invention relates to an ion conductive sheet which comprises (a) a polymeric matrix made of at least one polymer selected from the group consisting of polyether polymers, polyvinylidene fluoride polymers, polyacrylonitrile polymers, and polyacrylate polymers and at least one ion conductive substance selected from the group consisting of (b) supporting electrolytes and solvents, (c) salts meltable at ordinary temperature, and (d) salts meltable at ordinary temperature and solvents.
    Type: Application
    Filed: August 20, 2003
    Publication date: April 29, 2004
    Inventors: Masaki Minami, Junichiro Tanimoto, Takaya Kubo, Yoshinori Nishikitani
  • Publication number: 20030184839
    Abstract: An electrochromic element comprises an ion conduction layer between two conducting substrates, at least one of which is transparent. The ion conduction layer contains an organic compounds, which has both a structure exhibiting a cathodic electrochromic characteristic and a structure exhibiting an anodic electrochromic characteristic.
    Type: Application
    Filed: February 10, 2003
    Publication date: October 2, 2003
    Applicant: Nippon Mitsubishi Oil Corporation
    Inventors: Yoshinori Nishikitani, Keizo Iaki, Masaaki Kobayashi, Hiroshi Imafuku, Masaki Minami, Takaya Kubo
  • Patent number: 6519072
    Abstract: An electrochromic element comprises an ion conduction layer between two conducting substrates, at least one of which is transparent. The ion conduction layer contains an organic compound, which has both a structure exhibiting a cathodic electorchromic characteristic and a structure exhibiting an anodic electrochromic characteristic.
    Type: Grant
    Filed: August 16, 2001
    Date of Patent: February 11, 2003
    Assignee: Nippon Mitsubishi Oil Corporation
    Inventors: Yoshinori Nishikitani, Keizo Iaki, Masaaki Kobayashi, Hiroshi Imafuku, Masaki Minami, Takaya Kubo
  • Publication number: 20020015214
    Abstract: An electrochromic element comprises an ion conduction layer between two conducting substrates, at least one of which is transparent. The ion conduction layer contains an organic compound, which has both a structure exhibiting a cathodic electorchromic characteristic and a structure exhibiting an anodic electrochromic characteristic.
    Type: Application
    Filed: August 16, 2001
    Publication date: February 7, 2002
    Applicant: Nippon Mitsubishi Oil Corporation
    Inventors: Yoshinori Nishikitani, Keizo Iaki, Masaaki Kobayashi, Hiroshi Imafuku, Masaki Minami, Takaya Kubo
  • Patent number: 6118573
    Abstract: An electrode for an electrochromic device is disclosed having an electrically conductive substrate and a plurality of capacitive members arranged on the substrate, each of the capacitive members containing fine particles bound together with a binder, the fine particles having electric capacity of not less than 1 farad/g, the binder in the capacitive member having degree of swelling of not higher than 20 mass % when measured after the binder in the capacitive member is immersed in .gamma.-butyrolactone at 25.degree. C. for 24 hours. Also disclosed is an electrochromic device having the above electrode as a counterelectrode, an electrochromic electrode, and an electrolyte interposed therebetween.
    Type: Grant
    Filed: December 24, 1997
    Date of Patent: September 12, 2000
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Takaya Kubo, Tomohiro Toya, Yukio Kobayashi
  • Patent number: 5940202
    Abstract: A counterelectrode for a smart window contains a transparent substrate and a linear electrically conductive material formed on a surface of the transparent substrate. The electrically conductive material has a surface area of not less than 10 m.sup.2 /g and electrical conductivity of not less than 10.sup.-6 .OMEGA..sup.-1 .multidot.cm.sup.-1 at 25.degree. C. A smart window contains an electrochromic electrode having a layer of an electrochromic material formed on its surface, and a layer of an electrolyte arranged between the counterelectrode and the electrochromic electrode and in contact with the layer of the electrochromic material.
    Type: Grant
    Filed: August 15, 1997
    Date of Patent: August 17, 1999
    Assignee: Nippon Oil Co., Ltd
    Inventors: Yoshinori Nishikitani, Takaya Kubo, Nobuyuki Kuroda
  • Patent number: 5724176
    Abstract: A counterelectrode for a smart window contains a transparent substrate and a linear electrically conductive material formed on a surface of the transparent substrate. The electrically conductive material has a surface area of not less than 10 m.sup.2 /g and electrical conductivity of not less than 10.sup.-6 .OMEGA..sup.-1 .multidot.cm.sup.-1 at 25.degree. C. A smart window contains an electrochromic electrode having a layer of an electrochromic material formed on its surface, and a layer of an electrolyte arranged between the counterelectrode and the electrochromic electrode and in contact with the layer of the electrochromic material.
    Type: Grant
    Filed: September 29, 1995
    Date of Patent: March 3, 1998
    Assignee: Nippon Oil Co., Ltd.
    Inventors: Yoshinori Nishikitani, Takaya Kubo, Nobuyuki Kuroda
  • Patent number: 5708523
    Abstract: A counterelectrode for a smart window contains a transparent electrically conductive substrate and a plurality of electrically conductive dots arrayed on the transparent electrically conductive substrate. Each of the electrically conductive dots contains fine particles having capacitance of not less than 1 farad/g or fine particles capable of storing electrical charge of not less than 1 coulomb/g. A smart window contains the aforementioned counterelectrode.
    Type: Grant
    Filed: April 17, 1996
    Date of Patent: January 13, 1998
    Assignee: Nippon Oil Co. Ltd.
    Inventors: Takaya Kubo, Hiroshi Kobayashi, Yoshinori Nishikitani, Nobuyuki Kuroda, Tetsuya Seike, Junichi Nagai