Patents by Inventor Koichiro Shigaki

Koichiro Shigaki 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).

  • Publication number: 20150294798
    Abstract: The purpose of the present invention is to provide a dye-sensitized solar cell which has excellent photoelectric conversion efficiency and excellent durability. Disclosed is a dye-sensitized solar cell which comprises: a first conductive supporting body which has a semiconductor-containing layer that is sensitized by a dye; a second conductive supporting body which has a counter electrode and is disposed at a position where the semiconductor-containing layer and the counter electrode face each other at a predetermined distance; a charge transfer layer which is sandwiched between the first and second conductive supporting bodies; and a sealing agent which is provided in the peripheral portions of the first and second conductive supporting bodies for the purpose of sealing the charge transfer layer.
    Type: Application
    Filed: November 28, 2013
    Publication date: October 15, 2015
    Inventors: Masamitsu Satake, Takayuki Hoshi, Koichiro Shigaki
  • Publication number: 20150076420
    Abstract: A photoelectric conversion element which is obtained by having a thin film of fine oxide semiconductor particles support a methine-based dye that is represented by formula (1), said thin film being provided on a substrate.
    Type: Application
    Filed: March 29, 2013
    Publication date: March 19, 2015
    Inventors: Masayoshi Kaneko, Koichiro Shigaki, Teruhisa Inoue
  • Patent number: 8735720
    Abstract: Disclosed is a photoelectric conversion device wherein a methine dye represented by the formula (1) below is supported by a thin film of oxide semiconductor particles arranged on a substrate. Also disclosed is a solar cell manufactured by using such a photoelectric conversion device. (In the formula (1), n represents an integer of 0-5; m represents an integer of 0-5; R1-R4 independently represent a hydrogen atom, an optionally substituted aromatic residue, an optionally substituted aliphatic hydrocarbon residue or the like; X and Y independently represent a hydrogen atom; an optionally substituted aromatic residue, an optionally substituted aliphatic hydrocarbon residue or the like; Z represents an oxygen atom, a sulfur atom or the like; A1, A2, A3, A4 and A5 independently represent a hydrogen atom, an optionally substituted aromatic residue, an optionally substituted aliphatic hydrocarbon residue or the like; and rings a, b and c may be substituted.).
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: May 27, 2014
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Koichiro Shigaki, Masayoshi Kaneko, Takayuki Hoshi, Teruhisa Inoue
  • Patent number: 8513520
    Abstract: Disclosed is a dye-sensitized photovoltaic device in which a metal complex dye represented by Formula (1), or a salt thereof, is carried on a thin film of oxide semiconductor micrograins disposed on a substrate. (In Formula (1), m1 represents an integer from 1 to 2 and n1 represents an integer from 1 to 3. X1 represents an oxygen atom or sulfur atom. Y1 and Y2 each independently represent a thiocyanate group (—SCN) or isothiocyanate group (—NCS). M1 and M2 represent hydrogen atoms. R1 and R2 represent hydrogen atoms. R3 and R4 each independently represent a straight-chain alkyl group with 1 to 6 carbons. Further, when m1 is 2 and there are multiple of each of R3 and R4, each of R3 and R4 may be the same as or different from one another.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: August 20, 2013
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Koichiro Shigaki, Masayoshi Kaneko, Teruhisa Inoue
  • Publication number: 20130061925
    Abstract: Disclosed is a photoelectric conversion element which comprises: a first conductive supporting body that has a semiconductor-containing layer; a second conductive supporting body that has a counter electrode which is arranged at a position where the counter electrode faces the semiconductor-containing layer at a predetermined distance; a charge transfer layer that is held in a space between the first and second conductive supporting bodies; and a sealing agent that is provided in the peripheral portions of the first and second conductive supporting bodies so as to seal the charge transfer layer. The photoelectric conversion element is characterized in that the sealing agent is a thermosetting sealing agent for a photoelectric conversion element, said thermosetting sealing agent containing (a) an epoxy resin and (b) at least one heat curing agent that is selected from the group consisting of aromatic hydrazides and aliphatic hydrazides having 6 or more carbon atoms.
    Type: Application
    Filed: May 16, 2011
    Publication date: March 14, 2013
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Masamitsu Satake, Takayuki Hoshi, Masahiro Hamada, Masahiro Imaizumi, Koichiro Shigaki, Teruhisa Inoue
  • Patent number: 8338700
    Abstract: A photoelectric conversion device using a semiconductor fine material such as a semiconductor fine particle sensitized with a dye carried thereon, characterized in that the dye is a methine type dye having a specific partial structure, for example, a methine type dye having a specific carboxyl-substituted hetero ring on one side of a methine group and an aromatic residue substituted with a dialkylamino group or an organic metal complex residue on the other side of the methine group, or a methine type dye having a carboxyl-substituted aromatic ring on one side of a methine group and a heteroaromatic ring having a dialkylamino group or an organic metal complex residue on the otherside of the methine group; and a solar cell using the photoelectric conversion element. The photoelectric conversion element exhibits a conversion efficiency comparable or superior to that of a conventionally known photoelectric conversion element sensitized with a methine type dye.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: December 25, 2012
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masaaki Ikeda, Koichiro Shigaki, Teruhisa Inoue
  • Patent number: 8338701
    Abstract: A photoelectric conversion device using a semiconductor fine material such as a semiconductor fine particle sensitized with a dye carried thereon, characterized in that the dye is a methine type dye having a specific partial structure, for example, a methine type dye having a specific carboxyl-substituted hetero ring on one side of a methine group and an aromatic residue substituted with a dialkylamino group or an organic metal complex residue on the other side of the methine group, or a methine type dye having a carboxyl-substituted aromatic ring on one side of a methine group and a heteroaromatic ring having a dialkylamino group or an organic metal complex residue on the other side of the methine group; and a solar cell using the photoelectric conversion element. The photoelectric conversion element exhibits a conversion efficiency comparable or superior to that of a conventionally known photoelectric conversion element sensitized with a methine type dye.
    Type: Grant
    Filed: October 20, 2010
    Date of Patent: December 25, 2012
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masaaki Ikeda, Koichiro Shigaki, Teruhisa Inoue
  • Patent number: 8227690
    Abstract: The present invention relates to an organic dye-sensitized photoelectric conversion device and a solar cell utilizing the same. In accordance with a demand to now for development of an organic dye-sensitized photoelectric conversion device with high conversion efficiency and high practicability using an inexpensive dye, there is provided in the present invention, a photoelectric conversion device with high conversion efficiency by producing a photoelectric conversion device by sensitizing fine semiconductor particles with a methine dye having specified skeleton.
    Type: Grant
    Filed: March 11, 2004
    Date of Patent: July 24, 2012
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masaaki Ikeda, Koichiro Shigaki, Teruhisa Inoue
  • Patent number: 8173892
    Abstract: Disclosed is a photoelectric conversion device comprising a first conductive support having a layer containing a semiconductor, a second conductive support arranged opposite to the first conductive support and having a counter electrode, and a charge transfer layer interposed between the first conductive support and the second conductive support at a certain distance from the supports, and a sealing agent which is arranged around the charge transfer layer in the form of a single or more than single layer for bonding the first conductive support and the second conductive support together.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: May 8, 2012
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Teruhisa Inoue, Takayuki Hoshi, Tsutomu Namiki, Koichiro Shigaki, Masayoshi Kaneko
  • Patent number: 8022294
    Abstract: The present invention relates to a photoelectric conversion device sensitized by supporting a methine based dye represented by the following formula (1): (in the above formula, n represents an integer of 0 to 7; X and Y each represent a hydrogen atom, an optionally substituted aromatic residue, an optionally substituted aliphatic hydrocarbon residue and the like. In addition, X and Y may combine together to form an optionally substituted ring. A1, A2 and A3 represent each independently an optionally substituted aromatic residue, an optionally substituted aliphatic hydrocarbon residue and the like. In addition, when n is other than 0, a plural number of A1 and/or A2 and/or A3 may form an optionally substituted ring.
    Type: Grant
    Filed: June 13, 2006
    Date of Patent: September 20, 2011
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Koichiro Shigaki, Masayoshi Kaneko, Akira Maenosono, Takayuki Hoshi, Teruhisa Inoue
  • Patent number: 8022293
    Abstract: The present invention relates to photoelectric conversion devices, characterized by using oxide semiconductor particles sensitized with a methine dye represented by the Formula (1): (KA 1) (in the Formula (1), m represents 1 to 4; n1 represents 1 to 7; p1 represents 1 to 4; X1 represents an optionally substituted aromatic residue, an optionally substituted aliphatic hydrocarbon residue, a cyano group, a phosphoric acid group, a sulfonic acid group, or a carboxyl group, a carbonamide group, and the like; L1 represents an optionally substituted aromatic residue and the like; A1 and A2 each independently represent an optionally substituted aromatic residue, a hydroxyl group, a phosphoric acid group, a cyano group, a hydrogen atom, a halogen atom and the like; the ring a1 has 1 or a plurality of halogen atoms, amide groups, hydroxyl groups, cyano groups, nitro groups, alkoxy groups, acyl groups and the like.), and solar cells made by using the same.
    Type: Grant
    Filed: September 6, 2005
    Date of Patent: September 20, 2011
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Koichiro Shigaki, Teruhisa Inoue
  • Patent number: 7977570
    Abstract: The invention relates to a photoelectric conversion device, using oxide semiconductor fine particles sensitized with a methine dye represented by the following formula (1) and a solar cell using the same, and a solar cell high in conversion efficiency can be obtained at low cost: in the formula (1), n represents an integer of 0 to 7; R1 represents an optionally-substituted aromatic residue or optionally-substituted aliphatic hydrocarbon residue, or an acyl group; X represents an optionally-substituted hydrocarbon residue which has 2 to 4 carbon atoms; Y represents a hydrogen atom, an optionally-substituted aromatic residue or aliphatic hydrocarbon residue, a carboxyl group or the like, and preferably represents a carboxyl group; Z represents an optionally-substituted aromatic residue or aliphatic hydrocarbon residue, or an acyl group; A1, A2 and A3 each independently represent a hydrogen atom, an optionally-substituted aromatic residue or aliphatic hydrocarbon residue or the like, and preferably represent
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: July 12, 2011
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Koichiro Shigaki, Masayoshi Kaneko, Akira Maenosono, Takayuki Hoshi, Teruhisa Inoue
  • Publication number: 20110132452
    Abstract: Disclosed is a dye-sensitized photovoltaic device in which a metal complex dye represented by Formula (1), or a salt thereof, is carried on a thin film of oxide semiconductor micrograins disposed on a substrate. (In Formula (1), m1 represents an integer from 1 to 2 and n1 represents an integer from 1 to 3. X1 represents an oxygen atom or sulfur atom. Y1 and Y2 each independently represent a thiocyanate group (—SCN) or isothiocyanate group (—NCS). M1 and M2 represent hydrogen atoms. R1 and R2 represent hydrogen atoms. R3 and R4 each independently represent a straight-chain alkyl group with 1 to 6 carbons. Further, when m1 is 2 and there are multiple of each of R3 and R4, each of R3 and R4 may be the same as or different from one another.
    Type: Application
    Filed: August 21, 2009
    Publication date: June 9, 2011
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Koichiro Shigaki, Masayoshi Kaneko, Teruhisa Inoue
  • Patent number: 7915524
    Abstract: A sealing agent for a photoelectric conversion device which comprises one or more of a compound having a glycidyl structure, a compound having a cyclohexene oxide structure, a compound having an oxetane structure and a compound having a vinyl ether structure, and a cationic polymerization initiator; a photoelectric conversion device using the sealing agent; and a solar cell comprising the photoelectric conversion device. The sealing agent for a photoelectric conversion device can be used for pasting together upper and lower electroconductive glass substrates at an ordinary temperature in the manufacture of a photoelectric conversion device, and is excellent with respect to adhesion strength and the reliability in moisture resistance.
    Type: Grant
    Filed: February 18, 2004
    Date of Patent: March 29, 2011
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Teruhisa Inoue, Koichiro Shigaki, Masaaki Ikeda
  • Publication number: 20110031446
    Abstract: A photoelectric conversion device using a semiconductor fine material such as a semiconductor fine particle sensitized with a dye carried thereon, characterized in that the dye is a methine type dye having a specific partial structure, for example, a methine type dye having a specific carboxyl-substituted hetero ring on one side of a methine group and an aromatic residue substituted with a dialkylamino group or an organic metal complex residue on the other side of the methine group, or a methine type dye having a carboxyl-substituted aromatic ring on one side of a methine group and a heteroaromatic ring having a dialkylamino group or an organic metal complex residue on the otherside of the methine group; and a solar cell using the photoelectric conversion element. The photoelectric conversion element exhibits a conversion efficiency comparable or superior to that of a conventionally known photoelectric conversion element sensitized with a methine type dye.
    Type: Application
    Filed: October 20, 2010
    Publication date: February 10, 2011
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Masaaki Ikeda, Koichiro Shigaki, Teruhisa Inoue
  • Publication number: 20110030801
    Abstract: A photoelectric conversion device using a semiconductor fine material such as a semiconductor fine particle sensitized with a dye carried thereon, characterized in that the dye is a methine type dye having a specific partial structure, for example, a methine type dye having a specific carboxyl-substituted hetero ring on one side of a methine group and an aromatic residue substituted with a dialkylamino group or an organic metal complex residue on the other side of the methine group, or a methine type dye having a carboxyl-substituted aromatic ring on one side of a methine group and a heteroaromatic ring having a dialkylamino group or an organic metal complex residue on the otherside of the methine group; and a solar cell using the photoelectric conversion element. The photoelectric conversion element exhibits a conversion efficiency comparable or superior to that of a conventionally known photoelectric conversion element sensitized with a methine type dye.
    Type: Application
    Filed: October 20, 2010
    Publication date: February 10, 2011
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Masaaki Ikeda, Koichiro Shigaki, Teruhisa Inoue
  • Patent number: 7851701
    Abstract: A photoelectric conversion device using a semiconductor fine material such as a semiconductor fine particle sensitized with a dye carried thereon, characterized in that the dye is a methine type dye having a specific partial structure, for example, a methine type dye having a specific carboxyl-substituted hetero ring on one side of a methine group and an aromatic residue substituted with a dialkylamino group or an organic metal complex residue on the other side of the methine group, or a methine type dye having a carboxyl-substituted aromatic ring on one side of a methine group and a heteroaromatic ring having a dialkylamino group or an organic metal complex residue on the other side of the methine group; and a solar cell using the photoelectric conversion element. The photoelectric conversion element exhibits a conversion efficiency comparable or superior to that of a conventionally known photoelectric conversion element sensitized with a methine type dye.
    Type: Grant
    Filed: July 5, 2002
    Date of Patent: December 14, 2010
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masaaki Ikeda, Koichiro Shigaki, Teruhisa Inoue
  • Publication number: 20100243022
    Abstract: A dye-sensitized solar cell module comprising dye-sensitized solar cells arranged on a flat surface. Each dye-sensitized solar cell comprises a first substrate on which a first conductive layer having a photoelectric conversion layer forming part and an extension part is provided, a second substrate as the counter electrode on which a second conductive layer having a photoelectric conversion layer provided on the photoelectric conversion layer forming part on the first conductive layer is provided, a charge transfer layer contact part and an extension part, a third conductive layer provided on the extension part of the first and/or the extension part of the second conductive layer, a partition wall separating the dye-sensitized solar cell from an adjacent dye-sensitized solar cell, and a charge transfer layer. Part or whole of the partition wall contains conductive particles having conductive layers on their surfaces.
    Type: Application
    Filed: October 30, 2008
    Publication date: September 30, 2010
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Takayuki Hoshi, Teruhisa Inoue, Akira Maenosono, Kazuyuki Kawabe, Koichiro Shigaki, Masahiro Hamada
  • Patent number: 7728222
    Abstract: A photoelectric conversion device comprising an organic dye-sensitizing semiconductor fine particle thin film is prepared by using a dye having a barbituric acid structure as a partial structure and by adsorbing the dye on a semiconductor thin film electrode, and thereby a low-cost photoelectric conversion device having high conversion efficiency, and a solar cell using the device are provided.
    Type: Grant
    Filed: March 5, 2002
    Date of Patent: June 1, 2010
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Masaaki Ikeda, Koichiro Shigaki, Teruhisa Inoue
  • Publication number: 20090250104
    Abstract: Disclosed is a photoelectric conversion device comprising a first conductive support having a layer containing a semiconductor, a second conductive support arranged opposite to the first conductive support and having a counter electrode, and a charge transfer layer interposed between the first conductive support and the second conductive support at a certain distance from the supports, and a sealing agent which is arranged around the charge transfer layer in the form of a single or more than single layer for bonding the first conductive support and the second conductive support together.
    Type: Application
    Filed: October 20, 2006
    Publication date: October 8, 2009
    Applicant: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Teruhisa Inoue, Takayuki Hoshi, Tsutomu Namiki, Koichiro Shigaki, Masayoshi Kaneko