Patents by Inventor Naohiro Obonai

Naohiro Obonai 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: 20200328317
    Abstract: To provide a sealing material sheet for a solar-cell module that has high productivity without performing crosslinking processing, and has a high tensile shear adhesion force at normal temperature at a high level in addition to heat resistance and molding characteristics. A sealing material sheet is a multi-layer sheet using a polyethylene-based resin as a base resin, a core layer 11 has a density of 0.880 g/cm3 to 0.930 g/cm3 and a melting point of 70° C. or higher, a skin layer 12 has a density of 0.880 g/cm3 to 0.900 g/cm3 and a melting point of 90° C. or lower and contains a silane-modified polyethylene-based resin, a weight average molecular weight of the silane-modified polyethylene-based resin contained in the skin layer 12 in terms of polystyrene is 70000 to 120000, and a polymerized silane amount of the skin layer 12 in the whole resin component is 300 ppm to 2000 ppm.
    Type: Application
    Filed: April 11, 2019
    Publication date: October 15, 2020
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kosuke SAEKI, Shinya YONEDA, Jun TANAKA, Hiroaki TAMAKI, Shinsuke NAGINO, Naohiro OBONAI
  • Publication number: 20200328316
    Abstract: To provide a sealing material sheet for a solar-cell module that has high productivity, and can also suppress unevenness in thickness at the time of integration as a solar-cell module. There is provided a sealing material sheet 1 in which there are two inflection point temperatures that are temperatures only around which a change rate of the linear expansion coefficient locally increases, a first inflection point temperature at a low temperature side of two inflection point temperatures is within a range of 55° C. to 70° C., and a second inflection point at a high temperature side of the inflection point temperatures is within a range of 80° C. to 95° C.
    Type: Application
    Filed: April 11, 2019
    Publication date: October 15, 2020
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Kosuke SAEKI, Shinya YONEDA, Jun TANAKA, Hiroaki TAMAKI, Shinsuke NAGINO, Naohiro OBONAI
  • Patent number: 9368286
    Abstract: An object of the present invention is to provide a dye-sensitized solar cell having a solid electrolyte layer and improved durability or photoelectric conversion efficiency. A dye-sensitized solar cell 1, which comprises: a conductive base material 10; a porous semiconductor layer 20 formed on the conductive base material 10 having a porous surface carrying a sensitized dye; a counter electrode 40, which is disposed so as to face the porous semiconductor layer 20; and an electrolyte layer 30 comprising potassium iodide and a thermoplastic cellulose resin, which is formed between the conductive base material 10 and the counter electrode 40.
    Type: Grant
    Filed: February 2, 2012
    Date of Patent: June 14, 2016
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Naohiro Obonai, Ryo Fujiwara
  • Publication number: 20150235774
    Abstract: A dye-sensitized solar cell includes a base material that functions as an electrode, has flexibility, and has a porous layer, containing a dye-sensitizer-supported fine particle of a metal oxide semiconductor on one surface thereof. A counter electrode base material is arranged to oppose the base material for dye sensitized solar cell, functions as an electrode, and has flexibility. A solid electrolyte layer is provided between the base material for dye-sensitized solar cell and the counter electrode base material and contacts the porous layer. Among the base materials, at least one has transparency; and at least one has an insulating layer provided on a surface thereof. The insulating layer is provided in a region a region where the porous layer is formed, and where the base materials are opposed to each other. The insulating layer has an external communication portion that leads from an inside of the porous layer-forming region to outside.
    Type: Application
    Filed: April 24, 2015
    Publication date: August 20, 2015
    Inventors: Naohiro OBONAI, Ryo FUJIWARA
  • Patent number: 9064637
    Abstract: A dye-sensitized solar cell includes a base material that functions as an electrode, has flexibility, and has a porous layer, containing a dye-sensitizer-supported fine particle of a metal oxide semiconductor on one surface thereof. A counter electrode base material is arranged to oppose the base material for dye sensitized solar cell, functions as an electrode, and has flexibility. A solid electrolyte layer is provided between the base material for dye-sensitized solar cell and the counter electrode base material and contacts the porous layer. Among the base materials, at least one has transparency; and at least one has an insulating layer provided on a surface thereof. The insulating layer is provided in a region a region where the porous layer is formed, and where the base materials are opposed to each other. The insulating layer has an external communication portion that leads from an inside of the porous layer-forming region to outside.
    Type: Grant
    Filed: July 6, 2010
    Date of Patent: June 23, 2015
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventors: Naohiro Obonai, Ryo Fujiwara
  • Patent number: 8646997
    Abstract: An ink ribbon cassette is provided with a shaft container including a reel-out shaft holder having a reel-out shaft bearing journaling an ink ribbon reel-out shaft; a reel-in shaft holder having a reel-in shaft bearing journaling an ink ribbon reel-in shaft; and a pair of lateral bodies connecting the reel-out shaft holder to the reel-in shaft holder. A reel-out shaft holder cover 19 adapted to cover the reel-out shaft holder of the shaft container is connected to the reel-out shaft holder via a first connecting body. A reel-in shaft holder cover adapted to cover the reel-in shaft holder of the shaft container is connected to the reel-in shaft holder via a second connecting body. The first and second connecting bodies and have two or more hinges.
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: February 11, 2014
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hideki Matsubayashi, Hidemasa Kaida, Yoshihiro Sawa, Kazunobu Imoto, Naohiro Obonai
  • Publication number: 20120145235
    Abstract: An object of the present invention is to provide a dye-sensitized solar cell having a solid electrolyte layer and improved durability or photoelectric conversion efficiency. A dye-sensitized solar cell 1, which comprises: a conductive base material 10; a porous semiconductor layer 20 formed on the conductive base material 10 having a porous surface carrying a sensitized dye; a counter electrode 40, which is disposed so as to face the porous semiconductor layer 20; and an electrolyte layer 30 comprising potassium iodide and a thermoplastic cellulose resin, which is formed between the conductive base material 10 and the counter electrode 40.
    Type: Application
    Filed: February 2, 2012
    Publication date: June 14, 2012
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Naohiro Obonai, Ryo Fujiwara
  • Publication number: 20120138118
    Abstract: A dye-sensitized solar cell includes a base material that functions as an electrode, has flexibility, and has a porous layer, containing a dye-sensitizer-supported fine particle of a metal oxide semiconductor on one surface thereof. A counter electrode base material is arranged to oppose the base material for dye sensitized solar cell, functions as an electrode, and has flexibility. A solid electrolyte layer is provided between the base material for dye-sensitized solar cell and the counter electrode base material and contacts the porous layer. Among the base materials, at least one has transparency; and at least one has an insulating layer provided on a surface thereof. The insulating layer is provided in a region a region where the porous layer is formed, and where the base materials are opposed to each other. The insulating layer has an external communication portion that leads from an inside of the porous layer-forming region to outside.
    Type: Application
    Filed: July 6, 2010
    Publication date: June 7, 2012
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Naohiro Obonai, Ryo Fujiwara
  • Publication number: 20120118379
    Abstract: Disclosed herein is a dye-sensitized solar cell that prevents reverse electron transfer by a simple method and has significantly-improved power generation efficiency. The dye-sensitized solar cell includes a base material for dye-sensitized solar cell having a base material and a first electrode layer provided on the base material; a counter electrode base material arranged so as to oppose to the base material for dye-sensitized solar cell and functions as an electrode; an electrolyte layer provided between the base material for dye-sensitized solar cell and the counter electrode base material; and a porous layer laminated on either the base material for dye-sensitized solar cell or the counter electrode base material, provided so as to come into contact with the electrolyte layer, and contains a dye-sensitizer-supported fine particle of a metal oxide semiconductor.
    Type: Application
    Filed: July 6, 2010
    Publication date: May 17, 2012
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Isao Inoue, Naohiro Obonai, Koujirou Ookawa
  • Publication number: 20110220170
    Abstract: An object of the present invention is to provide a conductive base material for dye-sensitized solar cell and a transparent conductive base material for dye-sensitized solar cell which, when used as electrode base materials of a dye-sensitized solar cell, have high resistance to corrosion by iodide ions contained in an electrolyte layer and can prevent a reduction in the fill factor and conversion efficiency of the dye-sensitized solar cell to achieve high power generation efficiency, a dye-sensitized solar cell and a dye-sensitized solar cell module using such conductive base materials. To attain the object, provided is the conductive base material for dye-sensitized solar cell comprising: a first metal layer made of a metal having a specific resistance of 6×10?6 ?·m or less; and a second metal layer formed on the first metal layer, made of any one of metals of Ti, Cr, Ni, Mo, Ta, W, Nb, and Pt, and having a thickness of 500 nm or less.
    Type: Application
    Filed: March 3, 2011
    Publication date: September 15, 2011
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Naohiro OBONAI, Miho SASAKI
  • Publication number: 20090285615
    Abstract: An ink ribbon cassette 10 is provided with a shaft container 23 including a reel-out shaft holder 17 having a reel-out shaft bearing 13 journaling an ink ribbon reel-out shaft 12; a reel-in shaft holder 20 having a reel-in shaft bearing 15 journaling an ink ribbon reel-in shaft 14; and a pair of lateral bodies 16 connecting the reel-out shaft holder 17 to the reel-in shaft holder 20. A reel-out shaft holder cover 19 adapted to cover the reel-out shaft holder 17 of the shaft container 23 is connected to the reel-out shaft holder 17 via a first connecting body 18. A reel-in shaft holder cover 22 adapted to cover the reel-in shaft holder 20 of the shaft container 23 is connected to the reel-in shaft holder 20 via a second connecting body 21. The first and second connecting bodies 18 and 21 have two or more hinges 18a and 18b; and 21a and 21b, respectively.
    Type: Application
    Filed: July 18, 2007
    Publication date: November 19, 2009
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Hideki Matsubayashi, Hidemasa Kaida, Yoshihiro Sawa, Kazunobu Imoto, Naohiro Obonai
  • Patent number: 7442437
    Abstract: The present invention provides an adhesive composition comprising a copolymer (a) of a methylmethacrylate (MMA) and/or a butylmethacrylate (BMA) and a styrene (St), also provides an adhesive composition comprising a mixture of an acrylic polymer (b) and a ketone resin, wherein the acrylic polymer (b) is at least one polymer selected from the group consisting of a poly MMA, a poly BMA, a MMA/BMA copolymer or a MMA/BMA/St copolymer, and also provides a thermal transfer sheet having a layer comprising the adhesive composition. The adhesive composition has excellent heat sealing characteristics and resistance to blocking when it is used for the formation of an adhesive layer, is also superior in miscibility with various organic or inorganic additives and allows these additives to exhibit their functions sufficiently when these additives are added and has high transparency.
    Type: Grant
    Filed: August 11, 2005
    Date of Patent: October 28, 2008
    Assignee: DAI Nippon Printing Co., Ltd.
    Inventors: Hideki Usuki, Naohiro Obonai
  • Patent number: 7125928
    Abstract: The present invention provides an adhesive composition comprising a copolymer (a) of a methylmethacrylate (MMA) and/or a butylmethacrylate (BMA) and a styrene (St), also provides an adhesive composition comprising a mixture of an acrylic polymer (b) and a ketone resin, wherein the acrylic polymer (b) is at least one polymer selected from the group consisting of a poly MMA, a poly BMA, a MMA/BMA copolymer or a MMA/BMA/St copolymer, and also provides a thermal transfer sheet having a layer comprising the adhesive composition. The adhesive composition has excellent heat sealing characteristics and resistance to blocking when it is used for the formation of an adhesive layer, is also superior in miscibility with various organic or inorganic additives and allows these additives to exhibit their functions sufficiently when these additives are added and has high transparency.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: October 24, 2006
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hideki Usuki, Naohiro Obonai
  • Publication number: 20060198971
    Abstract: A thermal transfer sheet comprising: a base material sheet; and a thermally transferable transfer layer provided on at least a part of one side of the base material sheet, wherein the transfer layer is formed of at least two polyester resins, and one of the two polyester resins is a polyester resin having a glass transition point of 50° C. or above and a number average molecular weight of 2000 to 20000, an alcohol component in the polyester resin being composed of an aliphatic alcohol alone, and the other polymer resin is a polyester resin satisfying one or both of property requirements (a) and (b): (a) a bisphenol A component being present as an alcohol component, and the number average molecular weight being not more than 25000; and (b) a softening point of 110° C. or below as measured by a ring and ball method specified in JIS K 5601-2-2.
    Type: Application
    Filed: February 28, 2006
    Publication date: September 7, 2006
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Naohiro Obonai, Keiichi Ogawa
  • Publication number: 20060165923
    Abstract: The present invention provides an adhesive composition comprising a copolymer (a) of a methylmethacrylate (MMA) and/or a butylmethacrylate (BMA) and a styrene (St), also provides an adhesive composition comprising a mixture of an acrylic polymer (b) and a ketone resin, wherein the acrylic polymer (b) is at least one polymer selected from the group consisting of a poly MMA, a poly BMA, a MMA/BMA copolymer or a MMA/BMA/St copolymer, and also provides a thermal transfer sheet having a layer comprising the adhesive composition. The adhesive composition has excellent heat sealing characteristics and resistance to blocking when it is used for the formation of an adhesive layer, is also superior in miscibility with various organic or inorganic additives and allows these additives to exhibit their functions sufficiently when these additives are added and has high transparency.
    Type: Application
    Filed: August 11, 2005
    Publication date: July 27, 2006
    Inventors: Hideki Usuki, Naohiro Obonai
  • Patent number: 6946424
    Abstract: The present invention is first directed to a thermal transfer sheet which is not high in cost for obtaining a substrate, does not involve a problem of blocking or the like at the time of winding after coating of a backside layer onto the substrate, can eliminate the need to provide a release layer on the protective layer region, and further can enhance glossiness of a print with a protective layer. The thermal transfer sheet comprises a substrate, a dye layer of at least one color and a thermally transferable protective layer provided in a face serial manner on one side of the substrate, a protective layer provided on a part of one side of the substrate, an easy-adhesion layer provided on the whole surface of the protective layer and the substrate, the dye layer being provided on the easy-adhesion layer in its region where the protective layer is not located on the underside of the easy-adhesion layer.
    Type: Grant
    Filed: February 20, 2003
    Date of Patent: September 20, 2005
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Munenori Ieshige, Naohiro Obonai, Kenichi Hirota, Takenori Omata
  • Publication number: 20030181331
    Abstract: The present invention is first directed to a thermal transfer sheet which is not high in cost for obtaining a substrate, does not involve a problem of blocking or the like at the time of winding after coating of a backside layer onto the substrate, can eliminate the need to provide a release layer on the protective layer region, and further can enhance glossiness of a print with a protective layer. The thermal transfer sheet comprises a substrate, a dye layer of at least one color and a thermally transferable protective layer provided in a face serial manner on one side of the substrate, a protective layer provided on a part of one side of the substrate, an easy-adhesion layer provided on the whole surface of the protective layer and the substrate, the dye layer being provided on the easy-adhesion layer in its region where the protective layer is not located on the underside of the easy-adhesion layer.
    Type: Application
    Filed: February 20, 2003
    Publication date: September 25, 2003
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Munenori Ieshige, Naohiro Obonai, Kenichi Hirota, Takenori Omata
  • Patent number: 6616993
    Abstract: The present invention provides a protective layer transfer sheet which, when used to thermally transfer a protective layer onto an image-receiving sheet with an image formed thereon, provides a print that does not cause cracking of the protective layer and, even when housed and stored in a vinyl chloride case containing a plasticizer or the like, does not cause the migration of a dye constituting the image to the case, that is, has excellent fastness properties. In a protective layer transfer sheet 7 comprising a substrate sheet 1, a heat-resistant slip layer 3 provided on one side of the substrate sheet 1, and a thermally transferable protective layer 2 releasably provided on at least a part of the surface of the substrate sheet 1 remote from the heat-resistant slip layer 3, the thermally transferable protective layer 2 contains an epoxy resin and, in addition, contains at least one member selected from the group consisting of a butyral resin, an acrylic resin, and an ultraviolet absorber.
    Type: Grant
    Filed: February 28, 2001
    Date of Patent: September 9, 2003
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hideki Usuki, Satoshi Moriguchi, Naohiro Obonai, Hitoshi Saito
  • Publication number: 20030055151
    Abstract: The present invention provides an adhesive composition comprising a copolymer (a) of a methylmethacrylate (MMA) and/or a butylmethacrylate (BMA) and a styrene (St), also provides an adhesive composition comprising a mixture of an acrylic polymer (b) and a ketone resin, wherein the acrylic polymer (b) is at least one polymer selected from the group consisting of a poly MMA, a poly BMA, a MMA/BMA copolymer or a MMA/BMA/St copolymer, and also provides a thermal transfer sheet having a layer comprising the adhesive composition. The adhesive composition has excellent heat sealing characteristics and resistance to blocking when it is used for the formation of an adhesive layer, is also superior in miscibility with various organic or inorganic additives and allows these additives to exhibit their functions sufficiently when these additives are added and has high transparency.
    Type: Application
    Filed: September 10, 2002
    Publication date: March 20, 2003
    Inventors: Hideki Usuki, Naohiro Obonai
  • Publication number: 20020197453
    Abstract: The present invention provides a protective layer transfer sheet which, when used to thermally transfer a protective layer onto an image-receiving sheet with an image formed thereon, provides a print that does not cause cracking of the protective layer and, even when housed and stored in a vinyl chloride case containing a plasticizer or the like, does not cause the migration of a dye constituting the image to the case, that is, has excellent fastness properties. In a protective layer transfer sheet 7 comprising a substrate sheet 1, a heat-resistant slip layer 3 provided on one side of the substrate sheet 1, and a thermally transferable protective layer 2 releasably provided on at least a part of the surface of the substrate sheet 1 remote from the heat-resistant slip layer 3, the thermally transferable protective layer 2 contains an epoxy resin and, in addition, contains at least one member selected from the group consisting of a butyral resin, an acrylic resin, and an ultraviolet absorber.
    Type: Application
    Filed: February 28, 2001
    Publication date: December 26, 2002
    Inventors: Hideki Usuki, Satoshi Moriguchi, Naohiro Obonai, Hitoshi Saito