Patents by Inventor Yoshinori Iwabuchi

Yoshinori Iwabuchi 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: 9085731
    Abstract: The present invention is a method for producing a light-emitting body containing silicon fine particles that emit visible light, comprising: a baking step of baking a mixture containing a silicon source and a carbon source in an inert atmosphere; a rapid cooling step of rapidly cooling a gas generated by baking the mixture to obtain a composite powder; and a removing step of removing a portion of the composite powder, wherein in the removing step, a portion of silicon monoxide and a portion of silicon dioxide are removed from the composite powder containing silicon fine particles, silicon monoxide, and silicon dioxide.
    Type: Grant
    Filed: March 11, 2011
    Date of Patent: July 21, 2015
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Mari Miyano, Yoshinori Iwabuchi, Shinobu Endou, Shingo Oono
  • Publication number: 20150004090
    Abstract: A method for producing silicon fine particles of the present invention comprises: a step A of heating a precursor obtained by drying a mixture containing a silicon source and a carbon source by using a heating means in an inert atmosphere in a part formed by non-carbon substances 20, a step B of rapidly cooling a gas generated by heating the precursor in the inert atmosphere in the part formed by non-carbon substances 20, wherein at least one of the silicon source and the carbon source is liquid form.
    Type: Application
    Filed: December 10, 2012
    Publication date: January 1, 2015
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Shinobu Endo, Yoshinori Iwabuchi, Yukiko Yamamoto
  • Publication number: 20130037514
    Abstract: The present invention is a method for producing a light-emitting body containing silicon fine particles that emit visible light, comprising: a baking step of baking a mixture containing a silicon source and a carbon source in an inert atmosphere; a rapid cooling step of rapidly cooling a gas generated by baking the mixture to obtain a composite powder; and a removing step of removing a portion of the composite powder, wherein in the removing step, a portion of silicon monoxide and a portion of silicon dioxide are removed from the composite powder containing silicon fine particles, silicon monoxide, and silicon dioxide.
    Type: Application
    Filed: March 11, 2011
    Publication date: February 14, 2013
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Mari Miyano, Yoshinori Iwabuchi, Shinobu Endou, Shingo Oono
  • Publication number: 20120037897
    Abstract: (1) Disclosed is a thin film transistor comprising elements, namely a source electrode, a drain electrode, a gate electrode, a channel layer and a gate insulating film, said thin film transistor being characterized in that the channel layer is formed of an indium oxide film that is doped with tungsten and zinc and/or tin. (2) Disclosed is a bipolar thin film transistor comprising elements, namely a source electrode, a drain electrode, a gate electrode, a channel layer and a gate insulating film, said bipolar thin film transistor being characterized in that the channel layer is a laminate of an organic material film and a metal oxide film that contains indium doped with at least one of tungsten, tin or titanium and has an electrical resistivity that is controlled in advance.
    Type: Application
    Filed: April 16, 2010
    Publication date: February 16, 2012
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Osamu Shiino, Kaoru Sugie, Yoshinori Iwabuchi
  • Patent number: 8026506
    Abstract: In a thin-film transistor comprising respective elements of: three electrodes of a source electrode, a drain electrode and a gate electrode; a channel layer; and a gate insulating film, at least the channel layer is formed by a metal oxide film including indium. Therefore, it is possible to obtain the thin-film transistor, which can manufacture an element to a polymer substrate without using a high temperature process and which can achieve a high performance and a high reliability at low cost.
    Type: Grant
    Filed: January 30, 2008
    Date of Patent: September 27, 2011
    Assignee: Bridgestone Corporation
    Inventors: Osamu Shiino, Yoshinori Iwabuchi, Ryo Sakurai, Tatsuya Funaki
  • Publication number: 20100025680
    Abstract: In a thin-film transistor comprising respective elements of: three electrodes of a source electrode, a drain electrode and a gate electrode; a channel layer; and a gate insulating film, at least the channel layer is formed by a metal oxide film including indium. Therefore, it is possible to obtain the thin-film transistor, which can manufacture an element to a polymer substrate without using a high temperature process and which can achieve a high performance and a high reliability at low cost.
    Type: Application
    Filed: January 30, 2008
    Publication date: February 4, 2010
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Osamu Shino, Yoshinori Iwabuchi, Ryo Sakurai, Tatsuya Funaki
  • Patent number: 7534500
    Abstract: A transparent conductive film comprising a polymer film and a transparent conductive layer provided thereon, especially a transparent conductive film improved in durability and mechanical and electrical properties, a process for the preparation thereof, and a touch panel provided with the transparent conductive film, as well as transparent conductive plate and the process for the preparation thereof. The transparent conductive film comprising a polymer film, an undercoat layer and a transparent conductive layer which are superposed in this order, and the undercoat layer contains a compound having at least one selected from an amino group and a phosphoric acid group.
    Type: Grant
    Filed: October 7, 2002
    Date of Patent: May 19, 2009
    Assignee: Bridgestone Corporation
    Inventors: Taichi Kobayashi, Hidefumi Kotsubo, Yoshinori Iwabuchi, Mitsuhiro Nishida, Yukihiro Kusano, Shingo Oono, Masato Yoshikawa
  • Patent number: 7172681
    Abstract: Disclosed is a process for producing a rubber-based composite material, including the steps of forming, by sputtering, an adhesion film on a substrate to be mated with a rubber for constituting the composite material, laminating a rubber composition on the adhesion film, and vulcanizing the rubber composition, the sputtering is conducted by using a first target and a second target, composed of different metallic components and provided in a chamber, while moving the substrate in sputtering atmospheres formed by applying electric power simultaneously to the first and second targets.
    Type: Grant
    Filed: February 4, 2004
    Date of Patent: February 6, 2007
    Assignee: Bridgestone Corporation
    Inventors: Kenji Sato, Yoshinori Iwabuchi, Masato Yoshikawa
  • Patent number: 7153544
    Abstract: A touch panel includes a transparent electro-conductive film. The transparent electro-conductive film comprises a primary layer formed on a polymer film, and a transparent electro-conductive thin film or a multi-lamination film composed of at least one metal-compound layer and at least one electro-conductive-metal layer is formed on the primary layer. The primary layer is made of silicon compound. The primary layer is formed by sputtering, using a target having a density of 2.9 g/cm3 or more.
    Type: Grant
    Filed: March 1, 2004
    Date of Patent: December 26, 2006
    Assignee: Bridgestone Corporation
    Inventors: Masato Yoshikawa, Yoshinori Iwabuchi, Yukihiro Kusano, Mitsuhiro Nishida
  • Publication number: 20060234065
    Abstract: An acid-resistant transparent electroconductive substrate with an ITO layer includes a transparent base and the ITO layer formed over the transparent base. The ITO layer contains at least 30 percent by weight of tin oxide. A dye-sensitized solar cell electrode includes the transparent electroconductive substrate and a dye-adsorbed semiconductor layer formed over the ITO layer of the transparent electroconductive substrate. A dye-sensitized solar cell is provided which uses the dye-sensitized solar cell electrode as a dye-sensitized semiconductor electrode. A SnO2 content of 30 percent by weight or more enhances acid resistance. The dye-sensitized semiconductor electrode for the dye-sensitized solar cell is prepared by forming a layer-by-layer self-assembled film on the ITO layer by a layer-by-layer assembly technique, forming a replica layer by acid-treating the layer-by-layer self-assembled film to form irregularities, and forming a semiconductor layer on the replica layer.
    Type: Application
    Filed: April 14, 2006
    Publication date: October 19, 2006
    Inventors: Shingo Ohno, Yoshinori Iwabuchi, Hidefumi Kotsubo, Yasuhiro Morimura, Shinichiro Sugi, Hideo Sugiyama, Masato Yoshikawa
  • Patent number: 7118936
    Abstract: The present invention provides a semiconductor electrode of organic dye-sensitized metal oxide having a semiconductor layer of metal oxide that can be easily prepared, and an organic dye-sensitized solar cell. The semiconductor electrode of organic dye-sensitized metal oxide comprises a substrate having a transparent electrode thereon, a semiconductor layer of metal oxide provided on the electrode and an organic dye absorbed on a surface of the semiconductor layer, the semiconductor layer being formed by a vapor deposition process.
    Type: Grant
    Filed: October 11, 2002
    Date of Patent: October 10, 2006
    Assignee: Bridgestone Corporation
    Inventors: Taichi Kobayashi, Masato Yoshikawa, Yoshinori Iwabuchi, Itsuo Tanuma, Shingo Oono
  • Publication number: 20060209008
    Abstract: An image display device according to first to third aspects of the invention has an image display panel, in which two or more groups of particles having different colors and different charge characteristics are sealed between two substrates, at least one of two substrates being transparent, and, in which the particles, to which an electrostatic field produced by a pair of electrodes provided on respective substrates is applied, are made to fly and move so as to display an image. In the first aspect of the invention, micro-concave portions and/or micro-convex portions are provided to a part of or an overall of a surface of the electrode (first embodiment) or micro-cutout holes are provided to a part of or an overall of a surface of the electrode (second embodiment).
    Type: Application
    Filed: April 17, 2003
    Publication date: September 21, 2006
    Applicant: Bridgestone Corporation
    Inventors: Norio Nihei, Hajime Kitano, Koji Takagi, Gaku Yakushiji, Kazuya Murata, Ryou Sakurai, Yoshinori Iwabuchi, Hirotaka Yamazaki, Yoshitomo Masuda, Reiji Hattori
  • Publication number: 20060189132
    Abstract: A method for forming a porous thin film is characterized by formation of a composite thin film on a substrate, in which film a metal portion composed of a first metal component and a metal compound portion composed of a compound of a second metal component which is different from the first metal component are mixed-dispersed, and following lo removal of the metal portion from the composite thin film. A method for forming a porous thin film is alternatively characterized by formation of a composite thin film on a substrate, in which film a first metal portion composed of a first metal component and a second metal portion composed of a second metal component which is different from the first metal component are mixed-dispersed, and following removal of either one of the metal portions from the composite thin film.
    Type: Application
    Filed: April 15, 2004
    Publication date: August 24, 2006
    Inventors: Yoshinori Iwabuchi, Shinichiro Sugi, Shingo Ono, Hideo Sugiyama, Masato Yoshikawa
  • Patent number: 7056603
    Abstract: A touch panel includes a transparent electro-conductive film. The transparent electro-conductive film comprises a primary layer formed on a polymer film, and a transparent electro-conductive thin film or a multi-lamination film composed of at least one metal-compound layer and at least one electro-conductive-metal layer is formed on the primary layer. The primary layer is made of silicon compound. The primary layer is formed by sputtering, using a target having a density of 2.9 g/cm3 or more.
    Type: Grant
    Filed: March 1, 2004
    Date of Patent: June 6, 2006
    Assignee: Bridgestone Corporation
    Inventors: Masato Yoshikawa, Yoshinori Iwabuchi, Yukihiro Kusano, Mitsuhiro Nishida
  • Publication number: 20060087479
    Abstract: In a first aspect of the invention, an image display device, in which one or more groups of particles or liquid powders are sealed between opposed two substrates, at least one of two substrates being transparent, and, in which the particles or the liquid powders, to which an electrostatic field produced by two groups of electrodes having different potentials is applied, are made to move so as to display an image, has a construction such that a member for transmitting a signal, which is applied to circuits for an image display, is provided to the substrate by means of an anisotropic conductive film and members such as the electrode are provided to a substrate opposed to a transparent substrate.
    Type: Application
    Filed: June 20, 2003
    Publication date: April 27, 2006
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Ryou Sakurai, Hajime Kitano, Norio Nihei, Kazuya Murata, Gaku Yakushiji, Norihiko Kaga, Toshiaki Arai, Yoshitomo Masuda, Hirotaka Yamazaki, Hidefumi Kotsubo, Masato Yoshikawa, Shingo Oono, Yoshinori Iwabuchi
  • Publication number: 20060003188
    Abstract: A crystalline ITO transparent conductive thin film is formed by heating a substrate at low temperature during the sputtering film formation. The crystalline ITO transparent conductive thin film is formed by using an ITO target comprising In2O3 and SnO2 where a weight percentage of SnO2 is 6% or less based on the total weight of In2O3 and SnO2 in the ITO target, and heating the substrate at 90 to 170° C. during the sputtering film formation. The crystalline ITO film with high strength and mechanical durability can be formed by heating at low temperature, which meets heat resistance of the substrate, without requiring annealing after the film formation. There are provided a transparent conductive film comprising a polymer film 4 and an ITO transparent conductive film 5 formed thereon, and a touch panel comprising the transparent conductive film.
    Type: Application
    Filed: July 20, 2005
    Publication date: January 5, 2006
    Inventors: Shingo Ohno, Yoshinori Iwabuchi, Masato Yoshikawa, Yuzo Shigesato, Masato Kon
  • Publication number: 20050260786
    Abstract: An electrolyte for dye-sensitized solar cells, wherein an oxidation-reduction substance is carried by a vulcanized rubber, a phosphazene polymer, a porous body comprising a high molecular material which has a three-dimensional continuous network skeleton structure, or an EVA resin film. A dye-sensitized solar cell comprising dye-sensitized semiconductor electrodes 2, 3, a counter electrode 4 arranged at an opposed position to the electrodes, and an electrolyte 6 between the electrodes 2, 3 and the electrode 4. A solid electrolyte for dye-sensitized solar cells effective in improving the generation efficiency, durability, and safety of dye-sensitized solar cells and can be manufactured inexpensively.
    Type: Application
    Filed: August 6, 2003
    Publication date: November 24, 2005
    Applicant: BRIDGESTONE CORPORATION
    Inventors: Masato Yoshikawa, Shingo Ohno, Taichi Kobayashi, Takayuki Sugimura, Yoshinori Iwabuchi, Osamu Shiino, Hideo Sugiyama, Yasuo Horikawa, Shinichi Toyosawa
  • Patent number: 6896981
    Abstract: A transparent conductive film has a polymer film 4 and a transparent conductive layer 5 formed on the polymer film 4. The transparent conductive layer includes indium oxide, a zinc oxide system and a tin oxide system. A covering layer 9, made of material different from that of the transparent conductive layer 5, is formed on the transparent conductive layer 5. A touch panel is provided with the transparent conductive film as its upper electrode 6A or lower electrode. The surface of the transparent conductive layer is covered with the covering layer, so that physical or chemical stresses generated during the input to the touch panel do not affect transparent conductive layer directly, thus preventing damages and delamination of the transparent conductive layer. Furthermore, the covering layer formed on the transparent conductive layer improves the strength of the transparent conductive film, thereby enhancing a resistance to wear.
    Type: Grant
    Filed: July 15, 2002
    Date of Patent: May 24, 2005
    Assignee: Bridgestone Corporation
    Inventors: Yoshinori Iwabuchi, Taichi Kobayashi, Shingo Ohno, Yukihiro Kusano, Masato Yoshikawa
  • Patent number: 6875478
    Abstract: A film deposition apparatus equipped with a vacuum chamber, comprising a pair of rollers for vertically traveling a continuous sheet as a substrate, and a pair of sputtering cathodes for continuously depositing the film on the surfaces of the sheet in the vacuum chamber. The cathodes are vertically arranged and horizontally faced each other. The sheet is traveled between a pair of the cathodes. The apparatus and the film deposition process using it make it possible to deposit a film even on surfaces of a flexible sheet without causing problems such as defective film deposition or abnormal discharge, while ensuring stable, continuous, long-term operation.
    Type: Grant
    Filed: February 5, 2002
    Date of Patent: April 5, 2005
    Assignee: Bridgestone Corporation
    Inventors: Masato Yoshikawa, Yoshinori Iwabuchi, Shingo Ohno, Yukihiro Kusano
  • Publication number: 20040265602
    Abstract: A transparent conductive film comprising a polymer film and a transparent conductive layer provided thereon, especially a transparent conductive film improved in durability and mechanical and electrical properties, a process for the preparation thereof, and a touch panel provided with the transparent conductive film, as well as transparent conductive plate and the process for the preparation thereof. The transparent conductive film comprising a polymer film, an undercoat layer and a transparent conductive layer which are superposed in this order, and the undercoat layer contains a compound having at least one selected from an amino group and a phosphoric acid group.
    Type: Application
    Filed: August 18, 2004
    Publication date: December 30, 2004
    Inventors: Taichi Kobayashi, Hidefumi Kotsubo, Yoshinori Iwabuchi, Mitsuhiro Nishida, Yukihiro Kusano, Shingo Oono, Masato Yoshikawa