Patents by Inventor Takeshi Hakii
Takeshi Hakii 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).
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Patent number: 7990606Abstract: Provided is a display element, which has simple member configuration, can be driven at a low voltage, and has high display contrast, white display reflectance and high display speed and less display nonuniformity in a long term. The display element has an electrolyte layer, which includes silver or a compound having silver in the chemical structure, between counter electrodes and drives the counter electrodes to melt and deposit the silver. The electrolyte layer contains a butyral resin, a coloring material having an average primary grain diameter of 200 nm or more but not more than 1,000 nm, and an organic solvent having a boiling point of 120° C. or higher but not higher than 300° C. The mass ratio of the organic solvent to the butyral resin is 10:1 or more but not more than 10:5.Type: GrantFiled: August 1, 2007Date of Patent: August 2, 2011Assignee: Konica Minolta Holdings, Inc.Inventor: Takeshi Hakii
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Patent number: 7965434Abstract: This invention provides a display element comprising an electrolyte between opposed electrodes. The electrolyte contains silver, or a compound containing silver. The opposed electrodes are driven and operated so that silver is dissolved and precipitated. The display element is characterized in that this electrolyte satisfies the following requirements a to c: a. a cyclic carboxylic acid ester having a dielectric constant of not less than 30 and not more than 50 is contained as an organic solvent; b. formula (1) is satisfied: 0<[x]/[Ag]?0.1 (1) wherein [x] represents the total molar concentration (mol/kg) of halogen ions or halogen atoms contained in halide molecules; and [Ag] represents a total molar concentration (mol/kg) of silver or a compound containing silver; and c. the concentration of silver or a compound containing silver in an organic solvent is not less than 0.2 mmol/g and not more than 0.5 mmol/g.Type: GrantFiled: August 28, 2007Date of Patent: June 21, 2011Assignee: Konica Minolta Holdings, Inc.Inventors: Tomoaki Ijima, Takeshi Hakii
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Publication number: 20110133192Abstract: In the present invention, provided is a method of forming a conductive pattern exhibiting excellent adhesion of the conductive pattern to a substrate and high fine line reproduction via a simple process, and an organic thin film transistor exhibiting excellent element properties. Disclosed is a method of forming a conductive pattern, possessing a step of treating a substrate surface employing a compound represented by the following Formula (1), a step of decomposing the compound represented by Formula (1) via a photocatalytic action, and a plating step: Formula (1) (R)n—Si(A)3-n-(B) wherein R represents an alkyl group having 8 carbon atoms or less, A represents an alkoxy group or a halogen atom, B represents a substituent comprising a SH group, and n represents an integer of 0-2.Type: ApplicationFiled: June 29, 2009Publication date: June 9, 2011Applicant: Konica Minolta Holdings, Inc.Inventor: Takeshi Hakii
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Publication number: 20110121280Abstract: The present invention provides a substrate with excellent thin line reproducibility and excellent adhesion with conductive wiring, a conductive pattern formation process employing the substrate and an organic thin film transistor employing the substrate. The substrate is characterized in that it has a sensitizing dye and a compound represented by the following formula (I): (R)n-—i(A)3-n-(B)??Formula (I) wherein R represents an alkyl group having a carbon atom number of not more than 8; A represents an alkoxy group or a halogen atom; B represents a substituent containing an SH group; and n is an integer of from 0 to 2.Type: ApplicationFiled: July 17, 2009Publication date: May 26, 2011Applicant: Konica Minolta Holdings, Inc.Inventor: Takeshi Hakii
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Patent number: 7880959Abstract: Disclosed is display element which is constituted of simple members, can be driven at a relatively low voltage, exhibits high display contrast and white display reflectance, and can achieve a high display speed, comprising an electrolyte layer between opposed electrodes, and the electrolyte layer containing silver or a compound including silver in the chemical structure, wherein the opposed electrodes are driven so that the silver is dissolved or deposited and the electrolyte layer contains a mercapto compound having a sulfonamido group or a carbamido group in the molecule.Type: GrantFiled: August 28, 2007Date of Patent: February 1, 2011Assignee: Konica Minolta Holdings, Inc.Inventor: Takeshi Hakii
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Publication number: 20110013261Abstract: Provided is an electrochemical display element composed of a simple member structure, capable of driving at low voltage, and exhibiting high display contrast and white display reflectance, and further to provide the electrochemical display element exhibiting reduced variation in reflectance during repetitive driving even after storage for a long duration. Disclosed is an electrochemical display element possessing an N-oxyl derivative represented by the following Formula (1), an electrolyte and a pair of facing electrodes: wherein each of R1, R2, R3 and R4 independently represents an aliphatic hydrocarbon group, an aromatic hydrocarbon group or a heterocyclic group, which may have a hydrogen atom or a substituent; Z1 represents a group of atoms having 2 or 3 atoms to form a cyclic structure; and Z1 may also have a substituent.Type: ApplicationFiled: February 23, 2009Publication date: January 20, 2011Applicant: KONICA MINOLTA HOLDINGS, INC.Inventors: Takamune Hattori, Osamu Ishige, Takeshi Hakii
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Publication number: 20100213813Abstract: Disclosed is an electrochromic display element which can achieve a bright white display, a high contrast of white/black display and a full-color display in a simple member structure. In a display element, an electrolyte is contained between counter electrodes. A compound represented by Formula (A) is immobilized on at least one of the counter electrodes, wherein the ratio of the region on which the compound represented by Formula (A) is immobilized to the region on which the compound is not immobilized is 1:4 to 4:1. The electrolyte comprises a metal salt compound. A black display, a white display and a color display having a color other than black are achieved by operating the counter electrodes. In Formula (A), R22 represents a substituted or unsubstituted aryl group; R23 and R24 independently represents a hydrogen atom or a substituent; X represents >N—R25, an oxygen atom or sulfur atom; and R25 represents a hydrogen atom or a substituent.Type: ApplicationFiled: September 3, 2008Publication date: August 26, 2010Inventor: Takeshi Hakii
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Patent number: 7760413Abstract: A display element comprising an electrolyte layer containing silver or a compound containing silver in a chemical structure thereof and a porous white scattering layer between opposed electrodes, and carrying out driving operation for the opposed electrodes to induce silver dissolution and deposition, wherein the porous white scattering layer is structured of at least 2 layers and an average particle diameter of main component particles forming a first layer is larger than that of main component particles forming a second layer, provided that a porous white scattering layer adjacent to the electrode is designated as the first layer and a porous white scattering layer, located on a side farther than the first layer when viewed from the electrode, is designated as the second layer.Type: GrantFiled: May 22, 2007Date of Patent: July 20, 2010Assignee: Konica Minolta Holdings, Inc.Inventor: Takeshi Hakii
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Publication number: 20100165449Abstract: Provided is a display element, which has simple member configuration, can be driven at a low voltage, and has high display contrast, white display reflectance and high display speed and less display nonuniformity in a long term. The display element has an electrolyte layer, which includes silver or a compound having silver in the chemical structure, between counter electrodes and drives the counter electrodes to melt and deposit the silver. The electrolyte layer contains a butyral resin, a coloring material having an average primary grain diameter of 200 nm or more but not more than 1,000 nm, and an organic solvent having a boiling point of 120° C. or higher but not higher than 300° C. The mass ratio of the organic solvent to the butyral resin is 10:1 or more but not more than 10:5.Type: ApplicationFiled: August 1, 2007Publication date: July 1, 2010Applicant: KONICA MINOLTA HOLDINGS, INC.Inventor: Takeshi Hakii
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Publication number: 20100134864Abstract: 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: ApplicationFiled: June 3, 2008Publication date: June 3, 2010Applicant: KONICA MINOLTA HOLDINGS ,INC.Inventors: Takeshi Hakii, Tomoo Izumi
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Publication number: 20100097684Abstract: A display element containing at least 1 type of electrochromic compound, which is reversibly subjected to coloration or decoloration by at least either of electrochromic oxidation and reduction reaction, and an electrolyte between a pair of a display electrode and an opposed electrode; and undergoing a color tone change by an electrode driving operation, wherein a compound represented by following Formula (1) is held on the opposed electrode.Type: ApplicationFiled: October 19, 2009Publication date: April 22, 2010Applicant: KONICA MINOLTA HOLDINGS, INC.Inventors: Kaori ONO, Osamu ISHIGE, Takeshi HAKII, Akihito HISAMITSU
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Publication number: 20100091352Abstract: This invention provides a novel electrochemical display element, which can realize bright white display, high-contrast black and white display, and full-color display by a simple member construction, and a method for driving the display element. The display element is characterized in that it comprises opposed electrodes, and an electrolyte, an electrochromic compound, a metal salt compound, and a white scattering material between the opposed electrodes, and multicolor display of three or more colors is carried out by black display, white display, and display of color other than black by driving the opposed electrodes by taking advantage of 1) a color change as a result of oxidation and reduction reactions of the electrochromic compound, and 2) a color change as a result of reduction precipitation and oxidation dissolution of a metallic element contained in the metal salt compound in at least one of the opposed electrodes.Type: ApplicationFiled: November 14, 2007Publication date: April 15, 2010Applicant: KONICA MINOLTA HOLDINGS, INC.Inventors: Noriyuki Kokeguchi, Takeshi Hakii, Osamu Ishige
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Publication number: 20100025666Abstract: Disclosed is a stable organic thin film transistor having good switching property and a process for manufacturing an organic thin film transistor by a simple method. The organic thin film transistor comprises a substrate and provided thereon, at least a source electrode, a drain electrode, an organic semiconductor connecting the source electrode and the drain electrode, a gate electrode, and an insulating layer composed of a plurality of layers, the insulating layer being provided between the gate electrode and the organic semiconductor, wherein the organic thin film transistor comprises a mercapto group-containing compound represented by the following formula (I), Formula (I) (R)n—Si(A)3-n—(B) wherein R represents an alkyl group having a carbon atom number of not more than 8; A represents an alkoxy group or a halogen atom; B represents a substituent containing an SH group; and n is an integer of from 0 to 2.Type: ApplicationFiled: January 30, 2008Publication date: February 4, 2010Inventor: Takeshi Hakii
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Publication number: 20090268275Abstract: Disclosed is display element which is constituted of simple members, can be driven at a relatively low voltage exhibits high display contrast and white display reflectance, and can achieve a high display speed, comprising an electrolyte layer between opposed electrodes, and the electrolyte layer containing silver or a compound including silver in the chemical structure, wherein the opposed electrodes are driven so that the silver is dissolved or deposited and the electrolyte layer contains a mercapto compound having a sulfonamido group or a carbamido group in the molecule.Type: ApplicationFiled: August 28, 2007Publication date: October 29, 2009Applicant: KONICA MINOLTA HOLDINGS, INC.Inventor: Takeshi Hakii
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Publication number: 20090256121Abstract: An electrochromic compound represented by Formula (1), wherein R1 is an alkyl group, an alkenyl group, an aryl group, or a heterocyclic group; R2 and R3 are each a hydrogen atom or a substituent; X is N—R4, an oxygen atom, or a sulfur atom; and R4 is a hydrogen atom or a substituent; provided that at least one of R1-R4 has a partial structure represented by Formula (2), —Si(Y)nR?(3-n) ??Formula (2) wherein Y is a halogen atom or OR, R is an alkyl group, or an aryl group; R? is an alkyl group, an alkenyl group, an aryl group, or a heterocyclic group, and n is an integer of 1-3.Type: ApplicationFiled: April 7, 2009Publication date: October 15, 2009Applicant: KONICA MINOLTA HOLDINGS, INC.Inventors: Kaori ONO, Osamu ISHIGE, Takeshi HAKII, Akihito HISAMITSU
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Publication number: 20090237769Abstract: A display element comprising an electrolyte layer containing silver or a compound containing silver in a chemical structure thereof and a porous white scattering layer between opposed electrodes, and carrying out driving operation for the opposed electrodes to induce silver dissolution and deposition, wherein the porous white scattering layer is structured of at least 2 layers and an average particle diameter of main component particles forming a first layer is larger than that of main component particles forming a second layer, provided that a porous white scattering layer adjacent to the electrode is designated as the first layer and a porous white scattering layer, located on a side farther than the first layer when viewed from the electrode, is designated as the second layer.Type: ApplicationFiled: May 22, 2007Publication date: September 24, 2009Applicant: KONICA MINOLTA HOLDINGS, INC.Inventor: Takeshi Hakii
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Publication number: 20090207479Abstract: This invention provides a display element comprising an electrolyte between opposed electrodes. The electrolyte contains silver, or a compound containing silver. The opposed electrodes are driven and operated so that silver is dissolved and precipitated. The display element is characterized in that this electrolyte satisfies the following requirements a to c: a. a cyclic carboxylic acid ester having a dielectric constant of not less than 30 and not more than 50 is contained as an organic solvent; b. formula (1) is satisfied: 0<[x]/[Ag]?0.1 (1) wherein [x] represents the total molar concentration (mol/kg) of halogen ions or halogen atoms contained in halide molecules; and [Ag] represents a total molar concentration (mol/kg) of silver or a compound containing silver; and c. the concentration of silver or a compound containing silver in an organic solvent is not less than 0.2 mmol/g and not more than 0.5 mmol/g.Type: ApplicationFiled: August 28, 2007Publication date: August 20, 2009Applicant: KONICA MINOLTA HOLDINGS, INC.Inventors: Tomoaki Ijima, Takeshi Hakii
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Patent number: 7279271Abstract: The present invention provides a color material and a silver halide color photographic light-sensitive material, particularly, a color material and a silver halide color photographic light-sensitive material which are excellent in a coloring capability, processing stability, dye image fastness and a white background.Type: GrantFiled: March 25, 2003Date of Patent: October 9, 2007Assignee: Konica Minolta Photo Imaging Inc.Inventor: Takeshi Hakii
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Publication number: 20060177779Abstract: The present invention provides a color material and a silver halide color photographic light-sensitive material, particularly, a color material and a silver halide color photographic light-sensitive material which are excellent in a coloring capability, processing stability, dye image fastness and a white background. This invention is characterized by containing at least one type of compounds represented by formula (A) in at least one layer on a reflective or transparent support.Type: ApplicationFiled: March 25, 2003Publication date: August 10, 2006Applicant: KONICA CORPORATIONInventor: Takeshi Hakii
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Patent number: 6641988Abstract: A photographic element is disclosed, comprising a yellow dye forming coupler, a magenta dye forming coupler and a cyan dye forming coupler, wherein spectral reflection absorption characteristics of a yellow dye, a magenta dye and a cyan dye which are formed of the yellow dye forming coupler, the magenta dye forming coupler and the cyan dye forming coupler, respectively, meet the following requirements: 110≧&lgr;max(M)−&lgr;max(Y)≧95, 80≧&lgr;max(C)−&lgr;max(M)≧70, 0.43≧Abs600(M)≧0.38, and 0.48≧Abs550(C)≧0.35.Type: GrantFiled: January 31, 2002Date of Patent: November 4, 2003Assignee: Konica CorporationInventor: Takeshi Hakii