Patents by Inventor Hiroaki Itoh

Hiroaki Itoh 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: 9941422
    Abstract: Provided are a transparent conductive film having a simple manufacturing process and high transparency, high photoelectric conversion efficiency, and excellent durability and an organic photoelectric conversion element using this transparent conductive film. The transparent conductive film of the present invention is formed by laminating a ground layer which contains a nitrogen-containing organic compound and a metal thin film layer which contains a metal element of Group 11 of the periodic table and has a thickness of from 2 to 10 nm.
    Type: Grant
    Filed: April 4, 2013
    Date of Patent: April 10, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yasushi Okubo, Hiroaki Itoh, Ayako Wachi, Hiroshi Ishidai
  • Patent number: 9882072
    Abstract: Provided is a solar cell including a pair of electrodes, and a photoelectric conversion layer of chalcopyrite structure sandwiched between the pair of electrodes. At least one of the pair of electrodes, adapted to serve as a transparent electrode, has a nitrogen-containing layer composed with the use of an organic compound containing a nitrogen atom, and an electrode layer containing a metal of the Group 11 of the periodic table, which is provided to be laminated on the nitrogen-containing layer, thereby improving the photoelectric conversion efficiency.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: January 30, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yasushi Okubo, Hiroaki Itoh, Ayako Wachi, Hidekane Ozeki, Kazuhiro Yoshida, Takeshi Hakii
  • Patent number: 9871216
    Abstract: To provide an organic photoelectric conversion element whereby conversion efficiency is increased by morphology improvement in a power generation layer, and whereby short circuit current (Jsc) attenuation when irradiating light is simultaneously suppressed, and an organic solar cell using the same. An organic photoelectric conversion element having: a transparent first electrode; a power generation layer having a p-type organic semiconductor material and an n-type organic semiconductor material; and a second electrode, on a transparent substrate, in which the power generation layer is a bulk heterojunction power generation layer including the p-type organic semiconductor material and the n-type organic semiconductor material, and additionally includes a compound represented by either the following general formula (I) or general formula (II).
    Type: Grant
    Filed: August 6, 2012
    Date of Patent: January 16, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventor: Hiroaki Itoh
  • Patent number: 9666818
    Abstract: A tandem-type organic photoelectric conversion element has at least a first electrode, a second electrode, and a plurality of bulk heterojunction layers each comprising a p-type organic semiconductor material and an n-type organic semiconductor material. The tandem-type organic photoelectric conversion element and a solar battery are characterized in that when the absorption wavelengths of the bulk heterojunction layers are such that a second bulk heterojunction layer absorbs up to a longer wavelength than a first bulk heterojunction layer, the LUMO energy level (LUMO(n1)) of the film of the n-type semiconductor in the first bulk heterojunction layer and the LUMO energy level (LUMO(n2)) of the film of the n-type semiconductor in the second bulk heterojunction layer satisfy the following equation (1): 0.4 eV?LUMO(n1)?LUMO(n2)?0.1 eV??(1).
    Type: Grant
    Filed: September 8, 2010
    Date of Patent: May 30, 2017
    Assignee: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Yasushi Okubo, Noriko Yasukawa, Hiroaki Itoh, Takamune Hattori
  • Publication number: 20150364720
    Abstract: Provided is a gas barrier film with excellent storage stability, in particular, storage stability under harsh conditions (high temperature and high moisture conditions). The present invention provides a gas barrier film including, in order, a substrate, a first barrier layer which contains an inorganic compound, and a second barrier layer which contains at least silicon atoms and oxygen atoms, which has an abundance ratio of oxygen atoms to silicon atoms (O/Si) of 1.4 to 2.2, and which has an abundance ratio of nitrogen atoms to silicon atoms (N/Si) of 0 to 0.4.
    Type: Application
    Filed: January 31, 2014
    Publication date: December 17, 2015
    Inventor: Hiroaki ITOH
  • Publication number: 20150287844
    Abstract: A solar battery module that can decrease the reduction in output is provided. The solar battery module (1) includes a solar battery panel (30) which includes: a solar battery cell (2) that includes an insulating passivation film (22) on a light reception surface; a translucent substrate (5) which is arranged on the side of the light reception surface of the solar battery cell; and a sealing member (4) which adheres the solar battery cell and the translucent substrate. A cell upper portion (4a) arranged on the light reception surface of the solar battery cell has an area resistivity of 1.36×1014 ?·cm2 or more.
    Type: Application
    Filed: December 10, 2012
    Publication date: October 8, 2015
    Inventors: Yasushi Sainoh, Yoshihisa Dotta, Hiroyuki Ikawa, Masatomo Tanahashi, Shinji Nishioka, Kohei Sawada, Kentaro Usui, Tomoo Imataki, Hiroaki Itoh
  • Publication number: 20150221793
    Abstract: Provided is a solar cell including a pair of electrodes, and a photoelectric conversion layer of chalcopyrite structure sandwiched between the pair of electrodes. At least one of the pair of electrodes, adapted to serve as a transparent electrode, has a nitrogen-containing layer composed with the use of an organic compound containing a nitrogen atom, and an electrode layer containing a metal of the Group 11 of the periodic table, which is provided to be laminated on the nitrogen-containing layer, thereby improving the photoelectric conversion efficiency.
    Type: Application
    Filed: September 4, 2013
    Publication date: August 6, 2015
    Applicant: Konica Minolta, Inc.
    Inventors: Yasushi Okubo, Hiroaki Itoh, Ayako Wachi, Hidekane Ozeki, Kazuhiro Yoshida, Takeshi Hakii
  • Publication number: 20150096610
    Abstract: Provided are a transparent conductive film having a simple manufacturing process and high transparency, high photoelectric conversion efficiency, and excellent durability and an organic photoelectric conversion element using this transparent conductive film. The transparent conductive film of the present invention is formed by laminating a ground layer which contains a nitrogen-containing organic compound and a metal thin film layer which contains a metal element of Group 11 of the periodic table and has a thickness of from 2 to 10 nm.
    Type: Application
    Filed: April 4, 2013
    Publication date: April 9, 2015
    Inventors: Yasushi Okubo, Hiroaki Itoh, Ayako Wachi, Hiroshi Ishidai
  • Patent number: 8967848
    Abstract: Provided is a lightweight flexible lighting device with excellent durability and stable performance over repeated use that combines an organic electroluminescent element, an organic photoelectric conversion element, and a secondary cell. The lighting device has a control means for controlling the electrical connections of the organic electroluminescent element, the organic photoelectric conversion element, and the secondary cell. The control means controls the electrical connections such that a reverse bias voltage is applied to the organic electroluminescent element when the organic electroluminescent element receives light, generates power, and charges the secondary cell, and such that a reverse bias voltage is applied to the organic photoelectric conversion element when the organic electroluminescent element is supplied with power from the secondary cell and emits light.
    Type: Grant
    Filed: November 16, 2009
    Date of Patent: March 3, 2015
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Yasushi Okubo, Takahiko Nojima, Hiroaki Itoh, Ayako Wachi
  • Patent number: 8912435
    Abstract: Disclosed is an organic photoelectric conversion element which has excellent photoelectric conversion efficiency and excellent temperature stability with respect to power generation. The organic photoelectric conversion element comprises at least one photoelectric conversion layer and at least one carrier transport layer between a first electrode and a second electrode, and is characterized in that the carrier transport layer contains the salt of an alkali metal or an alkaline earth metal or the complex thereof of an alkali metal or an alkaline earth metal.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: December 16, 2014
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Ayako Wachi, Takahiko Nojima, Yasushi Okubo, Hiroaki Itoh
  • Publication number: 20140190566
    Abstract: To provide an organic photoelectric conversion element whereby conversion efficiency is increased by morphology improvement in a power generation layer, and whereby short circuit current (Jsc) attenuation when irradiating light is simultaneously suppressed, and an organic solar cell using the same. An organic photoelectric conversion element having: a transparent first electrode; a power generation layer having a p-type organic semiconductor material and an n-type organic semiconductor material; and a second electrode, on a transparent substrate, in which the power generation layer is a bulk heterojunction power generation layer including the p-type organic semiconductor material and the n-type organic semiconductor material, and additionally includes a compound represented by either the following general formula (I) or general formula (II).
    Type: Application
    Filed: August 6, 2012
    Publication date: July 10, 2014
    Applicant: KONICA MINOLTA, INC.
    Inventor: Hiroaki Itoh
  • Patent number: 8729387
    Abstract: Disclosed is an organic photoelectric conversion element having high photoelectric conversion efficiency and high durability. Also disclosed are a solar cell and an optical sensor array, each using the organic photoelectric conversion element. The organic photoelectric conversion element comprises a bulk heterojunction layer wherein an n-type semiconductor material and a p-type semiconductor material are mixed. The organic photoelectric conversion element is characterized in that the n-type semiconductor material is a polymer compound and the p-type semiconductor material is a low-molecular-weight compound.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: May 20, 2014
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Yasushi Okubo, Takahiko Nojima, Hiroaki Itoh, Ayako Wachi
  • Patent number: 8664518
    Abstract: Provided is an organic photoelectric conversion element containing: a first electrode; a second electrode; and an organic photoelectric conversion layer sandwiched between the first electrode and the second electrode, wherein the first electrode comprises: a conductive fiber layer; and a transparent conductive layer containing a conductive polymer comprising a ? conjugated conductive polymer and a polyanion, and an aqueous binder, and at least a part of the transparent conductive layer containing the conductive polymer and the aqueous binder is cross-linked therein.
    Type: Grant
    Filed: December 7, 2010
    Date of Patent: March 4, 2014
    Assignee: Konica Minolta Holdngs, Inc.
    Inventors: Ayako Wachi, Takahiko Nojima, Yasushi Okubo, Hiroaki Itoh
  • Publication number: 20130298825
    Abstract: A cleaning method comprises first cleaning which includes supplying a cleaning-liquid to the coloring device from the optical fiber passing hole of the nipple and the ink supply opening, and discharging the cleaning-liquid from the cleaning-liquid discharge opening, and second cleaning which includes supplying a cleaning-liquid to the coloring device from the optical fiber passing hole of the nipple and the ink supply opening, and discharging the cleaning-liquid from the optical fiber passing hole of the second die.
    Type: Application
    Filed: July 15, 2013
    Publication date: November 14, 2013
    Inventors: Kiyoshi ARIMA, Hiroaki Itoh, Tatsuya Taniguchi
  • Patent number: 8546684
    Abstract: Provided is an organic photoelectric conversion element having a high photoelectric conversion ratio. Provided is also a method for manufacturing an organic photoelectric conversion element which can significantly reduce the manufacturing cost by forming a transparent electrode and an organic generation layer portion by coating a material. The organic photoelectric conversion element includes on a transparent substrate, a first electrode unit having a transparent conductive layer, an organic generation unit, and a second electrode unit which are successively arranged in this order when viewed from the transparent substrate. The transparent conductive layer constituting the first electrode unit contains conductive fiber and transparent conductive material.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: October 1, 2013
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Takahiko Nojima, Yasushi Okubo, Hiroaki Itoh, Ayako Wachi
  • Patent number: 8491725
    Abstract: A cleaning method comprises first cleaning which includes supplying a cleaning-liquid to the coloring device from the optical fiber passing hole of the nipple and the ink supply opening, and discharging the cleaning-liquid from the cleaning-liquid discharge opening, and second cleaning which includes supplying a cleaning-liquid to the coloring device from the optical fiber passing hole of the nipple and the ink supply opening, and discharging the cleaning-liquid from the optical fiber passing hole of the second die.
    Type: Grant
    Filed: September 29, 2010
    Date of Patent: July 23, 2013
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Kiyoshi Arima, Hiroaki Itoh, Tatsuya Taniguchi
  • Publication number: 20120241003
    Abstract: Disclosed is an organic photoelectric conversion element which has excellent photoelectric conversion efficiency and excellent temperature stability with respect to power generation. The organic photoelectric conversion element comprises at least one photoelectric conversion layer and at least one carrier transport layer between a first electrode and a second electrode, and is characterized in that the carrier transport layer contains the salt of an alkali metal or an alkaline earth metal or the complex thereof of an alkali metal or an alkaline earth metal.
    Type: Application
    Filed: December 1, 2010
    Publication date: September 27, 2012
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Ayako Wachi, Takahiko Nojima, Yasushi Okubo, Hiroaki Itoh
  • Publication number: 20120199186
    Abstract: A tandem-type organic photoelectric conversion element has at least a first electrode, a second electrode, and a plurality of bulk heterojunction layers each comprising a p-type organic semiconductor material and an n-type organic semiconductor material. The tandem-type organic photoelectric conversion element and a solar battery are characterized in that when the absorption wavelengths of the bulk heterojunction layers are such that a second bulk heterojunction layer absorbs up to a longer wavelength than a first bulk heterojunction layer, the LUMO energy level (LUMO(n1)) of the film of the n-type semiconductor in the first bulk heterojunction layer and the LUMO energy level (LUMO(n2)) of the film of the n-type semiconductor in the second bulk heterojunction layer satisfy the following equation (1): 0.4 eV?LUMO(n1)?LUMO(n2)?0.1 eV . . .
    Type: Application
    Filed: September 8, 2010
    Publication date: August 9, 2012
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Yasushi Okubo, Noriko Yasukawa, Hiroaki Itoh, Takamune Hattori
  • Publication number: 20110233566
    Abstract: Provided is a lightweight flexible lighting device with excellent durability and stable performance over repeated use that combines an organic electroluminescent element, an organic photoelectric conversion element, and a secondary cell. The lighting device has a control means for controlling the electrical connections of the organic electroluminescent element, the organic photoelectric conversion element, and the secondary cell. The control means controls the electrical connections such that a reverse bias voltage is applied to the organic electroluminescent element when the organic electroluminescent element receives light, generates power, and charges the secondary cell, and such that a reverse bias voltage is applied to the organic photoelectric conversion element when the organic electroluminescent element is supplied with power from the secondary cell and emits light.
    Type: Application
    Filed: November 16, 2009
    Publication date: September 29, 2011
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Yasushi Okubo, Takahiko Nojima, Hiroaki Itoh, Ayako Wachi
  • Publication number: 20110197966
    Abstract: Provided is an organic photoelectric conversion element having a high photoelectric conversion ratio. Provided is also a method for manufacturing an organic photoelectric conversion element which can significantly reduce the manufacturing cost by forming a transparent electrode and an organic generation layer portion by coating a material. The organic photoelectric conversion element includes on a transparent substrate, a first electrode unit having a transparent conductive layer, an organic generation unit, and a second electrode unit which are successively arranged in this order when viewed from the transparent substrate. The transparent conductive layer constituting the first electrode unit contains conductive fiber and transparent conductive material.
    Type: Application
    Filed: October 7, 2009
    Publication date: August 18, 2011
    Applicant: KONICA MINOLTA HOLDINGS, INC.
    Inventors: Takahiko Nojima, Yasushi Okubo, Hiroaki Itoh, Ayako Wachi