Patents by Inventor Kenichi Okada

Kenichi Okada 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: 20120077018
    Abstract: A pressure-sensitive adhesive layer of the invention includes product formed by applying an aqueous dispersion type pressure-sensitive adhesive including a dispersion containing at least a base polymer dispersed in water and by drying the applied aqueous dispersion type pressure-sensitive adhesive, the pressure-sensitive adhesive layer dose not contain air bubbles with a maximum length of more than 350 ?m and the number of air bubbles with a maximum length of 50 ?m to 350 ?m is 1/m2 or less in a surface of the pressure-sensitive adhesive layer. The pressure-sensitive adhesive layer is formed using an aqueous dispersion type pressure-sensitive adhesive with low environmental loading and has a high-quality coating appearance with no problem of fine air bubble defects.
    Type: Application
    Filed: May 14, 2010
    Publication date: March 29, 2012
    Applicant: NITTO DENKO CORPORATION
    Inventors: Yousuke Makihata, Kenichi Okada, Toshitaka Takahashi, Yoshiaki Kitani, Taiki Shimokuri, Yoshihiro Kitamura
  • Patent number: 8133807
    Abstract: One object of the present invention is to provide a transparent electrode substrate with an ITO film formed thereon, used for example as the transparent electrode plate in a dye sensitized solar cell, for which the electrical resistance does not increase even when exposed to high temperatures of 300° C. or higher. In order to achieve the object, the present invention provides a substrate for a transparent electrode, wherein two or more layers of different transparent conductive films are formed on a transparent substrate, and an upper layer transparent conductive film has a higher heat resistance than that of a lower layer transparent conductive film.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: March 13, 2012
    Assignee: Fujikura Ltd.
    Inventors: Takuya Kawashima, Hiroshi Matsui, Kenichi Okada, Nobuo Tanabe
  • Publication number: 20120006406
    Abstract: The photoelectric conversion element of the present invention includes: a pair of electrodes facing one another; a oxide semiconductor layer provided on one of the pair of electrodes; an electrolyte disposed between the electrodes; and a sealing part that connects the electrodes, and surrounds and seals the oxide semiconductor layer and the electrolyte. At least a portion of the sealing part comprises an inorganic sealing part formed of an inorganic material and on a surface of at least one of the electrodes and a resin sealing part that is connected to the inorganic sealing part along the direction connecting the electrodes and comprises a material including a resin. A region on a surface of the inorganic sealing part on a side closer to the electrolyte than a region connected to the resin sealing part is covered with a protective resin layer that is resistant to the electrolyte.
    Type: Application
    Filed: August 24, 2011
    Publication date: January 12, 2012
    Applicant: FUJIKURA LTD.
    Inventors: Hiroki USUI, Hiroshi MATSUI, Kenichi OKADA
  • Publication number: 20110223704
    Abstract: A dye-sensitized solar cell manufacturing method of the invention comprises the steps of: preparing a first electrode having an oxide semiconductor layer and a second electrode; forming a first sealing portion by melting and bonding a thermoplastic resin at a first annular section of the first electrode; forming a second sealing portion by melting and bonding a thermoplastic resin at a second annular section of the second electrode; loading a photosensitive dye on the oxide semiconductor layer; forming an electrolyte layer by arranging an electrolyte on the first electrode within the first sealing portion; and forming a sealing portion through bonding the first and second sealing portions, wherein the electrolyte layer is formed after forming the first sealing portion; the sealing portion is formed after loading the dye and forming the electrolyte layer; and the sealing portion is formed through melting the first and second sealing portions, applying pressure.
    Type: Application
    Filed: May 26, 2011
    Publication date: September 15, 2011
    Applicant: FUJIKURA LTD.
    Inventors: Katsuhiro DOI, Kenichi OKADA
  • Publication number: 20110223703
    Abstract: The present invention is a sealing laminated sheet for an electronic device in which a first sheet and a second sheet 5 are laminated, wherein the first sheet contains an acid-modified polyolefin-based thermoplastic resin, the second sheet 5 has a melting point higher than that of the first sheet, and a peel strength at 25° C. of the second sheet 5 relative to the first sheet is 0.5 to 10.0 N/15 mm. According to the present invention, the production yield of an electronic device can be improved.
    Type: Application
    Filed: May 20, 2011
    Publication date: September 15, 2011
    Applicant: FUJIKURA LTD.
    Inventors: Katsuhiro DOI, Kenichi OKADA, Hiroki USUI
  • Publication number: 20110192458
    Abstract: The present invention provides a photoelectric conversion device in which changes in photoelectric conversion efficiency with time can be inhibited. The photoelectric conversion device according to the present invention includes: a pair of electrodes; an electrolytic solution disposed between the pair of electrodes; and a sealing portion that links the pair of electrodes and is provided around the electrolytic solution. At least part of the sealing portion includes at least one inorganic sealing portion constituted by an inorganic material and at least one resin sealing portion constituted by a material including a resin. The inorganic sealing portion and the resin sealing portion are disposed along a direction connecting the pair of electrodes.
    Type: Application
    Filed: April 25, 2011
    Publication date: August 11, 2011
    Applicant: FUJIKURA LTD.
    Inventors: Katsuhiro DOI, Kenichi OKADA, Hiroshi MATSUI
  • Publication number: 20110187469
    Abstract: A wideband oscillation circuit outputting oscillation signals (divided signals) of continuous frequencies is disclosed and the wideband oscillation circuit includes an oscillator that outputs an oscillation signal, a filter that filters the oscillation signal output from the oscillator and outputs an injection locked signal, and an injection locked frequency divider that performs a free-run operation and outputs a divided signal of the oscillation signal while its oscillating operation is regulated by the injection locked signal, the division ratio of which varies in accordance with a control signal, wherein the filter generates the injection locked signal by controlling the passing characteristic that caused the oscillation signal to pass with respect to time in accordance with a filter control signal locked with the divided signal.
    Type: Application
    Filed: February 1, 2011
    Publication date: August 4, 2011
    Applicant: Semiconductor Technology Academic Research Center
    Inventors: Kenichi Okada, Shoichi Hara
  • Publication number: 20110120550
    Abstract: The present invention provides a photoelectric conversion element in which bending resistance and impact resistance can be improved. The photoelectric conversion element of the present invention comprises a structure, a case into which the structure is built, and a deformable body disposed between the structure and the case. The structure is composed of at least a conductive first electrode provided with a porous oxide semiconductor layer on which a sensitizing dye is supported, a second electrode disposed opposing the first electrode, and an electrolyte arranged at least at a portion between the first electrode and the second electrode.
    Type: Application
    Filed: November 23, 2010
    Publication date: May 26, 2011
    Applicant: FUJIKURA LTD.
    Inventors: Kenichi OKADA, Takayuki KITAMURA, Hiroshi MATSUI
  • Publication number: 20110120520
    Abstract: The present invention provides a photoelectric conversion element in which current collection is conveniently performed without degrading a photoelectric conversion characteristic. The photoelectric conversion element in accordance with the present invention has: a structural body composed of at least a conductive first electrode provided with a porous oxide semiconductor layer supporting a sensitizing dye, a second electrode provided opposite the first electrode, and an electrolyte provided in at least part of the space between the first electrode and the second electrode; a cover member that covers the structural body and forms a separation portion between the cover member and the second electrode, and a conductive member provided in the separation portion, and having a connection site that is electrically connected to either the first electrode or the second electrode. Moreover, the conductive member is sandwiched between the cover member and the first electrode or the second electrode.
    Type: Application
    Filed: November 23, 2010
    Publication date: May 26, 2011
    Applicant: FUJIKURA LTD.
    Inventors: Kenichi OKADA, Takayuki KITAMURA
  • Patent number: 7939748
    Abstract: A photoelectric conversion element includes: a first electrode having a porous oxide semiconductor layer which supports a sensitizing dye on a surface thereof and functioning as a photo electrode; a second electrode disposed so as to oppose the first electrode; an electrolyte disposed in at least a part of a space between the first electrode and the second electrode; and a sump portion for the electrolyte disposed in at least a part of the space between the first electrode and the second electrode. According to the present invention, air bubbles can be exhausted effectively from power generating area, so that a photoelectric conversion element possessing an improved power generation property and a long-term durability can be provided.
    Type: Grant
    Filed: June 8, 2009
    Date of Patent: May 10, 2011
    Assignee: Fujikura Ltd.
    Inventors: Kenichi Okada, Takayuki Kitamura, Hiroshi Matsui
  • Publication number: 20110100455
    Abstract: A photoelectric conversion element includes: a first electrode having a porous oxide semiconductor layer which supports a sensitizing dye on a surface thereof and functioning as a photo electrode; a second electrode disposed so as to oppose the first electrode; an electrolyte disposed in at least a part of a space between the first electrode and the second electrode; and a sump portion for the electrolyte disposed in at least a part of the space between the first electrode and the second electrode. According to the present invention, air bubbles can be exhausted effectively from power generating area, so that a photoelectric conversion element possessing an improved power generation property and a long-term durability can be provided.
    Type: Application
    Filed: January 12, 2011
    Publication date: May 5, 2011
    Applicant: FUJIKURA LTD.
    Inventors: Kenichi Okada, Takayuki Kitamura, Hiroshi Matsui
  • Publication number: 20110041909
    Abstract: There is provided a dye-sensitized solar cell that may improve power generation efficiency by suppressing light absorption of a wiring part. The dye-sensitized solar cell 10 includes a first electrode substrate 11, a second electrode substrate 16, and an electrolyte layer 17. The first electrode substrate includes a porous oxide semiconductor layer 15 and a wiring part 19 on a side of one surface thereof. A dye is carried on the porous oxide semiconductor layer, and the wiring part is provided at a portion adjacent to the porous oxide semiconductor layer 15. The second electrode substrate is disposed so as to face the porous oxide semiconductor layer 15 of the first electrode substrate 11. The electrolyte layer is disposed at least at a part of a gap between the first and second electrode substrates 11 and 16.
    Type: Application
    Filed: August 6, 2010
    Publication date: February 24, 2011
    Applicant: Fujikura Ltd.
    Inventors: Kenichi OKADA, Hiroshi Matsui, Takayuki Kitamura
  • Publication number: 20110017396
    Abstract: The present invention provides a method of manufacturing a photoelectric conversion element that includes a working electrode, an counter electrode that is bonded to the working electrode through a bonding layer disposed in an outer periphery area of one surface of the working electrode, and an electrolyte layer that has an electrolyte arranged in a gap thereof as a main body, and is a manufacturing method of a photoelectric conversion element at least including: a step of forming the electrolyte layer by filling the gap with the electrolyte through a through hole that is disposed in the working electrode or the counter electrode in advance under a decompressed environment; and a step of acquiring the photoelectric conversion element by sealing the through hole while maintaining the decompressed environment.
    Type: Application
    Filed: September 30, 2010
    Publication date: January 27, 2011
    Applicant: FUJIKURA LTD.
    Inventors: Katsuhiro DOI, Kenichi OKADA
  • Patent number: 7858709
    Abstract: The aqueous dispersion adhesive composition contains an aqueous dispersion copolymer obtained by reacting of a reaction component containing alkyl (meth)acrylate whose linear or branched alkyl group has 4 to 18 carbon atoms, (meth)acrylic acid, a phosphoric acid group-containing vinyl monomer and an alkoxysilyl group-containing vinyl monomer to react; and a crosslinking agent having reactivity with a carboxyl group. In the aqueous dispersion adhesive composition, an amount of the crosslinking agent is from 0.07 to 4 parts by weight per 100 parts by weight of the aqueous dispersion copolymer, and in an adhesive layer made of the aqueous dispersion adhesive composition, an elongation at 90° C. is 200% or less.
    Type: Grant
    Filed: May 1, 2008
    Date of Patent: December 28, 2010
    Assignee: Nitto Denko Corporation
    Inventors: Toshitaka Takahasi, Kenichi Okada, Yousuke Makihata, Kuniaki Inui, Taiki Shimokuri, Mika Okada, Namiko Murayama
  • Publication number: 20100304135
    Abstract: To provide an adhesive composition which shows high adhesion with a glass substrate and has excellent heat resistance, moisture resistance and moist heat resistance, an adhesive optical film comprising an adhesive layer made of the adhesive composition, which shows high adhesion between the adhesive layer and an optical film and effectively suppresses the occurrence of adhesive residue and lack of adhesive and also has excellent heat resistance, moisture resistance and moist heat resistance, and an image display device comprising the adhesive optical film, the adhesive optical film comprises an optical film 1, an adhesive layer 3 made of a water dispersible adhesive composition comprising, as raw monomers, an alkyl (meth)acrylate ester whose alkyl group has 4 to 18 carbon atoms, a carboxyl group-containing vinyl monomer, a phosphoric acid group-containing vinyl monomer, and a copolymerizable vinyl monomer which is optionally copolymerizable with the above monomers, wherein a carboxyl group concentration is fr
    Type: Application
    Filed: June 9, 2010
    Publication date: December 2, 2010
    Applicant: Nitto Denko Corporation
    Inventors: Kenichi Okada, Toshitaka Takahashi, Mika Kanamaru, Michio Umeda
  • Publication number: 20100295627
    Abstract: A voltage-controlled oscillator that can achieve low phase noise while ensuring stable oscillation startup and stable oscillation maintenance even under low supply voltage conditions. The voltage-controlled oscillator includes an LC parallel resonant circuit, whose impedance varies with a control input voltage and a negative resistance circuit for introducing negative resistance into the LC parallel resonant circuit, wherein the negative resistance circuit includes at least: a first amplifier circuit, provided in parallel with the LC parallel resonant circuit and having a first pair of transistors cross-coupled via a capacitor, that achieves class-C amplifier operation by biasing the gate of each transistor in the first transistor pair with a first bias voltage; and a similarly configured second amplifier circuit that achieves class-C amplifier operation by biasing the gate of each transistor with a second bias voltage which is different from the first bias voltage.
    Type: Application
    Filed: May 18, 2010
    Publication date: November 25, 2010
    Applicant: Semiconductor Technology Academic Research Center
    Inventor: Kenichi Okada
  • Patent number: 7829782
    Abstract: To provide an easy-to-manufacture, high-quality photovoltaic conversion device and an optical power generator and also to provide a manufacturing method with high production efficiency.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: November 9, 2010
    Assignee: Kyocera Corporation
    Inventors: Hideki Hakuma, Kenichi Okada, Kenji Tomita, Hisao Arimune
  • Patent number: 7825330
    Abstract: A solar cell and photovoltaic power generation apparatus including a transparent electrically conductive film, a semiconductor provided on the transparent electrically conductive film, a conductive film opposing the semiconductor, and an electrolyte solution filled between the semiconductor and the conductive film. Metal ions, such as silver ions, may be dissolved in the electrolyte solution. When light is incident on the cell, the metal ions cause an oxidation-reduction reaction in the electrolyte solution and the cell is charged. When the open-circuit voltage decreases because the amount of incident light drops or light is blocked, the cell discharges to function as a secondary cell.
    Type: Grant
    Filed: December 28, 2004
    Date of Patent: November 2, 2010
    Assignee: Fujikura Ltd.
    Inventors: Kenichi Okada, Hiroshi Matsui, Nobuo Tanabe
  • Publication number: 20100233531
    Abstract: An electrolyte composition includes an ionic liquid and a solvent, wherein the solvent contains a material made of at least one of sulfolane and derivatives thereof, and a content of the material is 5 to 40 mass % of the total content of the electrolyte composition.
    Type: Application
    Filed: May 27, 2010
    Publication date: September 16, 2010
    Applicant: FUJIKURA LTD.
    Inventors: Hiroshi MATSUI, Kenichi OKADA, Takayuki KITAMURA
  • Publication number: 20100229941
    Abstract: An electrode substrate for a photoelectric conversion element includes: current collecting wires; and a protective layer covering the current collecting wires, wherein the protective layer includes a first protective layer containing glass components and a second protective layer which is composed of an insulating resin layer and provided on the first protective layer.
    Type: Application
    Filed: May 27, 2010
    Publication date: September 16, 2010
    Applicant: FUJIKURA LTD.
    Inventors: Hiroshi MATSUI, Kenichi OKADA, Takayuki KITAMURA