Patents by Inventor Tomoo Izumi

Tomoo Izumi 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: 20230020129
    Abstract: An organic electroluminescent element has at least one pair of electrodes including an anode and a cathode and one or more organic functional layers between the anode and the cathode that are in a pair. The organic electroluminescent element includes an organic functional layer that exists as a continuous phase over an entire display area and includes an at least one light emitting compound with a concentration gradient in an in-plane direction and in a thickness direction of the organic functional layer.
    Type: Application
    Filed: November 20, 2020
    Publication date: January 19, 2023
    Inventors: Tomoo IZUMI, Hideo TAKA, Hiroyuki ISOBE, Sota SATO, Koki IKEMOTO
  • Publication number: 20220285623
    Abstract: Provided is an inkjet recording medium for an organic semiconductor device including a base material, an electrode, and ink receiving layer in this order, wherein the ink receiving layer has an ink penetration prevention area on an electrode side that prevents ink which permeates from a surface far from the electrode toward the electrode from reaching the electrode.
    Type: Application
    Filed: February 9, 2022
    Publication date: September 8, 2022
    Inventors: Hideo TAKA, Tomoo IZUMI, Kazuhiro OIKAWA
  • Publication number: 20170182710
    Abstract: A three-dimensional fabricated object manufacturing apparatus (1) provided with a fabrication block (20), an information code-forming block (30) and a position code-forming block (40). The fabrication block (20) sequentially stacks fabrication material layer by layer. The information code-forming block (30) forms an information code in which information for identifying the three-dimensional fabricated object is encoded inside the three-dimensional fabricated object that is fabricated by the fabrication block (20). The position code-forming block (40) forms a position code in which information representing the information code formation position in the three-dimensional fabricated object is encoded inside or on the surface of the three-dimensional fabricated object.
    Type: Application
    Filed: February 27, 2015
    Publication date: June 29, 2017
    Inventors: Masayasu HAGA, Eiji TABATA, Toshiya NATSUHARA, Tomoo IZUMI
  • Publication number: 20170021571
    Abstract: The manufacturing apparatus (1) for three-dimensional moldings is provided with a molding block (20), a tag-supplying block (30) and a control unit (12). The molding block (20) is a molding device for molding a three-dimensional object by successively layering molding material layer by layer. The tag-supplying block (30) is a tag-supplying device for supplying a wireless communication tag to a specified position. The control unit (12) causes the tag-supplying block (30) to supply the wireless communication tag to the specified position of the molding material during layering of the molding material by the molding block (20) so that the wireless communication tag is embedded inside the three-dimensional molding that is obtained by layering the molding material.
    Type: Application
    Filed: January 19, 2015
    Publication date: January 26, 2017
    Applicant: Konica Minolta, Inc.
    Inventors: Masayasu HAGA, Eiji TABATA, Toshiya NATSUHARA, Tomoo IZUMI
  • Patent number: 8686988
    Abstract: In the case of depositing a metal in a plurality of stages by applying deposition voltages having a plurality of rectangular waves at different voltages to an electrochemical display element, the application time of the rectangular wave at the highest voltage among the plurality of rectangular waves is set to a time (Tip) required for reaching a resistance inflexion point (Rip) where the resistance value (R) of a pixel starts to rapidly increase or shorter. Thus, the element can be prevented from being broken without deteriorating the response characteristics of a display element.
    Type: Grant
    Filed: November 10, 2009
    Date of Patent: April 1, 2014
    Assignee: Konica Minolta Holdings, Inc.
    Inventor: Tomoo Izumi
  • Publication number: 20120086693
    Abstract: A method is provided for driving an electrochemical display element. An apparatus employing the method is also provided. The method comprises a blackening step for depositing a metal by applying a blackening pulse to a pixel of the electrochemical device, and a whitening step for dissolving the deposited metal by application of a whitening pulse. When the display at the electrochemical display device is being updated, the duration time of application and/or voltage of application of the whitening pulse is adjusted in accordance with the time elapsed since the deposition of the metal in the blackening step before the update in the whitening step. This method enables sufficient whitening of the pixel of the electrochemical display device, excellent durability, and shortening of the time for update.
    Type: Application
    Filed: May 19, 2010
    Publication date: April 12, 2012
    Inventors: Tomoo Izumi, Hiroko Ohmori
  • Publication number: 20110267334
    Abstract: In the case of depositing a metal in a plurality of stages by applying deposition voltages having a plurality of rectangular waves at different voltages to an electrochemical display element, the application time of the rectangular wave at the highest voltage among the plurality of rectangular waves is set to a time (Tip) required for reaching a resistance inflexion point (Rip) where the resistance value (R) of a pixel starts to rapidly increase or shorter. Thus, the element can be prevented from being broken without deteriorating the response characteristics of a display element.
    Type: Application
    Filed: November 10, 2009
    Publication date: November 3, 2011
    Applicant: Konica Minolta Holdings, Inc.
    Inventor: Tomoo Izumi
  • Patent number: 8049948
    Abstract: This invention provides a novel process for producing an electrochemical display element, which can easily form a white scattering layer between opposed electrodes, has a high level of suitability for production, and has high stability after long-term use. The production process is characterized in that a film containing a white scattering material and a polymeric binder is formed on at least one electrode in opposed electrodes, the other electrode is disposed so as to face the electrode with film formed thereon, a low-viscosity electrolyte is poured into a space between the opposed electrodes, and the polymeric binder is dissolved in or swollen in the electrolyte to form a gel-like electrolyte layer containing the white scattering material and the polymeric binder within the space.
    Type: Grant
    Filed: June 3, 2008
    Date of Patent: November 1, 2011
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Takeshi Hakii, Tomoo Izumi
  • Publication number: 20110156996
    Abstract: An image input/output device is provided that can instantaneously write an image by applying an optical pattern and that can acquire information on the written image as image data. This image input/output device includes a TFT (10); a photoelectric conversion portion (20) including a photoelectric conversion layer (21), a photoelectric conversion pixel electrode (22) and a photoelectric conversion common electrode (23); a display portion (30) including a display layer (33), a display pixel electrode (31) and a display common electrode (32); and a charge sensing amplifier (71) that amplifies an output signal from the photoelectric conversion portion (20).
    Type: Application
    Filed: September 2, 2009
    Publication date: June 30, 2011
    Applicant: Konica Minolta Holdings, Inc.
    Inventor: Tomoo Izumi
  • Patent number: 7776666
    Abstract: A method of manufacturing a low-cost thin film transistor of minimized variations in performances, as well as the thin film transistor produced thereby. A thin film transistor manufacturing method including the steps of: forming a gate electrode on a substrate; forming a gate insulation layer on the gate electrode; forming a semiconductor layer by coating the gate insulation layer with a semiconductor material; forming a repellent layer having an electrode material-repellent characteristic on the semiconductor layer; applying light from the surface of the substrate where there is no gate electrode, thereby removing the semiconductor layer and the repellent layer by sublimation, except for the portion protected against light by the gate electrode; and dropping the fluid electrode material on the repellent layer remaining on the substrate so that the fluid electrode material is separated by the repellent layer, whereby the source electrode and the drain electrode are formed.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: August 17, 2010
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Tomoo Izumi, Jun Yamada
  • Publication number: 20100163737
    Abstract: Disclosed is a radiation detector characterized by comprising a scintillator layer formed on one side of a supporting substrate and composed of a phosphor converting radiation into visible light, a plurality of transparent electrodes formed in a matrix on the other side of the supporting substrate, a photoelectric conversion layer formed on the transparent electrodes and containing an organic semiconductor material, and an upper electrode formed on the organic semiconductor layer. This radiation detector is further characterized in that collector elements for focusing visible light emitted from the scintillator layer irradiated with radiation on the organic semiconductor layer are embedded in a matrix in the supporting substrate at positions facing the transparent electrodes.
    Type: Application
    Filed: May 14, 2008
    Publication date: July 1, 2010
    Inventors: Satoshi Masuda, Tomoo Izumi
  • Publication number: 20100134864
    Abstract: This invention provides a novel process for producing an electrochemical display element, which can easily form a white scattering layer between opposed electrodes, has a high level of suitability for production, and has high stability after long-term use. The production process is characterized in that a film containing a white scattering material and a polymeric binder is formed on at least one electrode in opposed electrodes, the other electrode is disposed so as to face the electrode with film formed thereon, a low-viscosity electrolyte is poured into a space between the opposed electrodes, and the polymeric binder is dissolved in or swollen in the electrolyte to form a gel-like electrolyte layer containing the white scattering material and the polymeric binder within the space.
    Type: Application
    Filed: June 3, 2008
    Publication date: June 3, 2010
    Applicant: KONICA MINOLTA HOLDINGS ,INC.
    Inventors: Takeshi Hakii, Tomoo Izumi
  • Patent number: 7670870
    Abstract: A method of manufacturing an organic thin film transistor characterized by low costs and high performances, the method in which the self-assemble monolayer is formed in a short period of time, and the organic thin film transistor are provided. A method of manufacturing an organic thin film a transistor having a gate electrode, a semiconductor layer, a source electrode, and a drain electrode on a substrate, wherein a semiconductor solution as a mixture of the self-assembled monolayer material and organic semiconductor material is coated between the source electrode and drain electrode, whereby a semiconductor layer is formed.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: March 2, 2010
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Tomoo Izumi, Masakazu Okada
  • Patent number: 7576475
    Abstract: An actuator device which is made as a laminated structure including a displacement-functioning layer having a region to be deformed by the electric field and an electrode-functioning layer having a region to function as an electrode. And an manufacturing method in which the above-mentioned device is easily manufactured, the method in which, according to the laminated structure, arranging each layer to be formed on the transfer section and transferring it onto the substrate to laminate.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: August 18, 2009
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Tomoo Izumi, Akira Kosaka, Mitsuhiro Fukuda
  • Patent number: 7535626
    Abstract: A shape-variable optical element, which includes: a shape-variable section made up of an organic material that can be expanded and contracted by an electric field, in a direction of the electric field; and a pair of electrode layers to sandwich the shape-variable section, wherein amounts of expansion and contraction of the shape-variable section, which are generated by the electric field when a voltage is applied to the pair of electrode layers, have a distribution pattern in a surface perpendicular to the electric field.
    Type: Grant
    Filed: May 30, 2007
    Date of Patent: May 19, 2009
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Akira Kosaka, Tomoo Izumi, Mitsuhiro Fukuda
  • Patent number: 7532382
    Abstract: The present invention provides a display element including a layered body. The layered body includes a layered portion comprising a plurality of transparent thin films with different refractive indexes, and a plurality of electrodes which are adapted to apply an electric field to each of the plurality of transparent thin films. Each of the plurality of transparent thin films comprises a material whose thickness changes according to the electric field.
    Type: Grant
    Filed: June 1, 2007
    Date of Patent: May 12, 2009
    Assignee: Konica Minolta Opto, Inc.
    Inventors: Tomoo Izumi, Akira Kosaka, Mitsuhiro Fukuda
  • Patent number: 7517566
    Abstract: A liquid crystal composition including at least two kinds of gelling agents and a liquid crystal. The liquid crystal shows a liquid crystal phase at room temperature. A liquid crystal display device using the liquid crystal composition also is provided.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: April 14, 2009
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Akihito Hisamitsu, Nobuyuki Kobayashi, Tomoo Izumi
  • Patent number: 7473294
    Abstract: An object of the present invention is to provide nitrogen-containing metallic powder at high productivity, which powder contains a metal such as niobium or tantalum containing nitrogen uniformly, and enables production of an anode electrode that has high specific capacitance and low leakage current and that exhibits excellent reliability for a prolonged period of time. There is provided nitrogen-containing metallic powder which is a solid solution containing 50-20,000 ppm nitrogen, in which the metal that constitutes the metallic powder is niobium or tantalum. The nitrogen-containing metallic powder is produced through the process in which while a metallic compound is reduced with a reducing agent, a nitrogen-containing gas is introduced into a reaction system to thereby form metal, and nitrogen is simultaneously incorporated into metal.
    Type: Grant
    Filed: June 5, 2006
    Date of Patent: January 6, 2009
    Assignee: Cabot Supermetals K.K.
    Inventors: Yukio Oda, Tomoo Izumi, Yoshikazu Noguchi
  • Patent number: 7473447
    Abstract: A liquid crystal display device, comprising: a liquid crystal layer comprising a cholesteric liquid crystal and a self-organizing type gelling agent, and a manufacturing method thereof, comprising: spreading a cholesteric liquid crystal containing a gelling agent in a heated state over at least one of substrates to form a liquid crystal layer, or a manufacturing method thereof, comprising: spreading a cholesteric liquid crystal that contains a gelling agent and exhibits flowability at room temperature over at least one of substrates to form a liquid crystal layer.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: January 6, 2009
    Assignee: Konica Minolta Holdings, Inc.
    Inventor: Tomoo Izumi
  • Patent number: 7407692
    Abstract: A chiral nematic liquid crystal composition, characterized in that a self-organizing type gelling agent is contained and the phase transition temperature between liquid crystal and isotropic phases is higher than the sol-gel transition temperature, a liquid crystal display device wherein the chiral nematic liquid crystal composition is put and held between a pair of substrates having an electrode, and a method for producing a liquid crystal display device wherein the chiral nematic liquid crystal composition is heated to a temperature of not lower than the phase transition temperature between liquid crystal and isotropic phases and then cooled down to room temperature.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: August 5, 2008
    Assignee: Konica Minolta Holdings, Inc.
    Inventor: Tomoo Izumi