Patents by Inventor Jun Tsukamoto

Jun Tsukamoto 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: 8558108
    Abstract: An electron donating organic material includes a benzothiadiazole compound including (a) a benzothiadiazole skeleton and (b) an oligothiophene skeleton, and having a band gap (Eg) of 1.8 eV or less, and a level of highest occupied molecular orbital (HOMO) of ?4.8 eV or less, wherein said benzothiadiazole compound is formed by covalently combining the benzothiadiazole skeleton and the oligothiophene skeleton alternately, a proportion between the benzothiadiazole skeleton and the oligothiophene skeleton is within a range of 1:1 to 1:2 (however, excluding 1:1), and the number of thiophene rings contained in an oligothiophene skeleton is 3 or more and 12 or less.
    Type: Grant
    Filed: March 13, 2009
    Date of Patent: October 15, 2013
    Assignee: Toray Industries, Inc.
    Inventors: Daisuke Kitazawa, Shuhei Yamamoto, Jun Tsukamoto
  • Patent number: 8530889
    Abstract: A carbon nanotube composite in which a conjugated polymer containing repeating units containing a fused heteroaryl unit having a nitrogen-containing double bond in the ring, and a thiophene unit is attached to at least a part of the surface of a carbon nanotube. The present invention reduces the hysteresis of a field-effect transistor having a semiconductor layer containing a carbon nanotube.
    Type: Grant
    Filed: May 11, 2009
    Date of Patent: September 10, 2013
    Assignee: Toray Industries, Inc.
    Inventors: Yukari Jo, Seiichiro Murase, Daisuke Kitazawa, Jun Tsukamoto
  • Patent number: 8501901
    Abstract: A photovoltaic device has a high photoelectric conversion efficiency with a material for a photovoltaic device including an electron donating organic material having a structure represented by Formula (1):
    Type: Grant
    Filed: January 20, 2010
    Date of Patent: August 6, 2013
    Assignee: Toray Industries, Inc.
    Inventors: Daisuke Kitazawa, Shuhei Yamamoto, Nobuhiro Watanabe, Jun Tsukamoto
  • Patent number: 8441002
    Abstract: The present invention provides an organic semiconductor composite containing a certain thiophene compound and carbon nanotubes, which can be formed into a film by a coating process such as an inkjet process, has high charge mobility and can maintain a high on/off ratio even in air, an organic transistor material and an organic field effect transistor.
    Type: Grant
    Filed: January 25, 2008
    Date of Patent: May 14, 2013
    Assignee: Toray Industries, Inc.
    Inventors: Seiichiro Murase, Yukari Jo, Jun Tsukamoto, Junji Mata
  • Patent number: 8269099
    Abstract: A photovoltaic device with high photoelectric conversion efficiency includes an electron donating organic material for photovoltaic devices containing a conjugated polymer represented by formula (1): wherein R1 to R10 may be the same or different from each other and are each selected from the group consisting of hydrogen, an alkyl group, an alkoxy group and an aryl group; R11 and R12 may be the same or different from each other and are each selected from the group consisting of hydrogen, an alkyl group, an aryl group, a heteroaryl group and halogen; W, X, Y and Z may be the same or different from each other and are each selected from the group consisting of a single bond, an arylene group, a heteroarylene group, an ethenylene group, and an ethynylene group; m is 0 or 1; n is within a range of 1 to 1000.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: September 18, 2012
    Assignee: Toray Industries, Inc.
    Inventors: Daisuke Kitazawa, Jun Tsukamoto, Yukari Jo
  • Publication number: 20110272030
    Abstract: A photovoltaic device has a high photoelectric conversion efficiency with a material for a photovoltaic device including an electron donating organic material having a structure represented by Formula (1):
    Type: Application
    Filed: January 20, 2010
    Publication date: November 10, 2011
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Daisuke Kitazawa, Shuhei Yamamoto, Nobuhiro Watanabe, Jun Tsukamoto
  • Publication number: 20110121273
    Abstract: A carbon nanotube composite in which a conjugated polymer containing repeating units containing a fused heteroaryl unit having a nitrogen-containing double bond in the ring, and a thiophene unit is attached to at least a part of the surface of a carbon nanotube. The present invention reduces the hysteresis of a field-effect transistor having a semiconductor layer containing a carbon nanotube.
    Type: Application
    Filed: November 5, 2009
    Publication date: May 26, 2011
    Inventors: Yukari Jo, Seiichiro Murase, Daisuke Kitazawa, Jun Tsukamoto
  • Publication number: 20110068417
    Abstract: To provide a gate insulating material which has high chemical resistance, is superior in coatability of a resist and an organic semiconductor coating liquid, and has small hysteresis, a gate insulating film and an FET using the same by a polysiloxane having an epoxy group-containing silane compound as a copolymerization component.
    Type: Application
    Filed: February 27, 2009
    Publication date: March 24, 2011
    Applicant: Toray Industries, Inc.
    Inventors: Seiichiro Murase, Takenori Fujiwara, Yukari Jo, Jun Tsukamoto
  • Publication number: 20110025645
    Abstract: A substrate with a transparent conductive layer includes a transparent supporting substrate, a thermosetting resin layer containing 50% by weight or more of a melamine resin, and a carbon nanotube conductive layer in this order, wherein a value of linearity of resistance of the carbon nanotube conductive layer is 1.5% or less.
    Type: Application
    Filed: February 27, 2009
    Publication date: February 3, 2011
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Junji Mata, Jun Tsukamoto, Hiroki Sekiguchi
  • Publication number: 20110023964
    Abstract: An electron donating organic material includes a benzothiadiazole compound including (a) a benzothiadiazole skeleton and (b) an oligothiophene skeleton, and having a band gap (Eg) of 1.8 eV or less, and a level of highest occupied molecular orbital (HOMO) of ?4.8 eV or less, wherein said benzothiadiazole compound is formed by covalently combining the benzothiadiazole skeleton and the oligothiophene skeleton alternately, a proportion between the benzothiadiazole skeleton and the oligothiophene skeleton is within a range of 1:1 to 1:2 (however, excluding 1:1), and the number of thiophene rings contained in an oligothiophene skeleton is 3 or more and 12 or less.
    Type: Application
    Filed: March 13, 2009
    Publication date: February 3, 2011
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Daisuke Kitazawa, Shuhei Yamamoto, Jun Tsukamoto
  • Publication number: 20100102299
    Abstract: The present invention provides an organic semiconductor composite containing a certain thiophene compound and carbon nanotubes, which can be formed into a film by a coating process such as an inkjet process, has high charge mobility and can maintain a high on/off ratio even in air, an organic transistor material and an organic field effect transistor.
    Type: Application
    Filed: January 25, 2008
    Publication date: April 29, 2010
    Applicant: TORAY INDUSTRIES, INC.
    Inventors: Seiichiro Murase, Yukari Jo, Jun Tsukamoto, Junji Mata
  • Publication number: 20100006154
    Abstract: A photovoltaic device with high photoelectric conversion efficiency includes an electron donating organic material for photovoltaic devices containing a conjugated polymer represented by formula (1): wherein R1 to R10 may be the same or different from each other and are each selected from the group consisting of hydrogen, an alkyl group, an alkoxy group and an aryl group; R11 and R12 may be the same or different from each other and are each selected from the group consisting of hydrogen, an alkyl group, an aryl group, a heteroaryl group and halogen; W, X, Y and Z may be the same or different from each other and are each selected from the group consisting of a single bond, an arylene group, a heteroarylene group, an ethenylene group, and an ethynylene group; m is 0 or 1; n is within a range of 1 to 1000.
    Type: Application
    Filed: October 4, 2007
    Publication date: January 14, 2010
    Inventors: Daisuke Kitazawa, Jun Tsukamoto, Yukari Jo
  • Patent number: 7282742
    Abstract: The present invention relates to an organic semiconductor material in which carbon nanotubes are dispersed in a conjugated polymer, and the weight fraction of the carbon nanotubes is 3 percent or less relative to the conjugated polymer. According to the present invention, an organic semiconductor material having a high carrier mobility can be supplied industrially. Furthermore, high-performance organic semiconductor devices, e.g., organic thin film transistor devices and organic photovoltaic devices, can be provided.
    Type: Grant
    Filed: September 25, 2002
    Date of Patent: October 16, 2007
    Assignee: Toray Industries, Inc.
    Inventors: Jun Tsukamoto, Junji Mata
  • Patent number: 6859243
    Abstract: By preparing a color filter including blue dots whose chromaticity coordinates (z, Z) in the XYZ colorimetric system, measured with CIE standard light source C, satisfy the relational expressions 114>Z>?1087023z4+3205105z3?3545958z2+1744329z?321773 and 0.73?z?0.81, a color filter exhibiting an excellent color reproducibility and a high transmittance can be realized and thus a liquid crystal display device capable of displaying as colorful images as in CRT television sets can be achieved.
    Type: Grant
    Filed: December 4, 2000
    Date of Patent: February 22, 2005
    Assignee: Toray Industries, Inc.
    Inventors: Tetsuo Yamashita, Jun Tsukamoto
  • Patent number: 6856364
    Abstract: By preparing a color filter including blue dots whose chromaticity coordinates (z, Z) in the XYZ colorimetric system, measured with CIE standard light source C, satisfy the relational expressions 114>Z>?1087023z4+3205105z3?3545958z2+1744329z?321773 and 0.73?z?0.81, a color filter exhibiting an excellent color reproducibility and a high transmittance can be realized and thus a liquid crystal display device capable of displaying as colorful images as in CRT television sets can be achieved.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: February 15, 2005
    Assignee: Toray Industries, Inc.
    Inventors: Tetsuo Yamashita, Jun Tsukamoto
  • Publication number: 20040241900
    Abstract: The present invention relates to an organic semiconductor material in which carbon nanotubes are dispersed in a conjugated polymer, and the weight fraction of the carbon nanotubes is 3 percent or less relative to the conjugated polymer. According to the present invention, an organic semiconductor material having a high carrier mobility can be supplied industrially. Furthermore, high-performance organic semiconductor devices, e.g., organic thin film transistor devices and organic photovoltaic devices, can be provided.
    Type: Application
    Filed: March 26, 2004
    Publication date: December 2, 2004
    Inventors: Jun Tsukamoto, Junji Mata
  • Publication number: 20040076770
    Abstract: By preparing a color filter including blue dots whose chromaticity coordinates (z, Z) in the XYZ colorimetric system, measured with CIE standard light source C, satisfy the relational expressions 114>Z>−1087023z4+3205105z3−3545958z2+1744329z−321773 and 0.73≦z≦0.81, a color filter exhibiting an excellent color reproducibility and a high transmittance can be realized and thus a liquid crystal display device capable of displaying as colorful images as in CRT television sets can be achieved.
    Type: Application
    Filed: October 14, 2003
    Publication date: April 22, 2004
    Applicant: Toray Industries, Inc.
    Inventors: Tetsuo Yamashita, Jun Tsukamoto
  • Publication number: 20030003378
    Abstract: By preparing a color filter including blue dots whose chromaticity coordinates (z, Z) in the XYZ colorimetric system, measured with CIE standard light source C, satisfy the relational expressions 114>Z>−1087023z4+3205105z3−3545958z2+1744329z−321773 and 0.73≦z≦0.81, a color filter exhibiting an excellent color reproducibility and a high transmittance can be realized and thus a liquid crystal display device capable of displaying as colorful images as in CRT television sets can be achieved.
    Type: Application
    Filed: June 7, 2002
    Publication date: January 2, 2003
    Inventors: Tetsuo Yamashita, Jun Tsukamoto
  • Patent number: 6455208
    Abstract: An object of the present invention is to provide a liquid crystal display exhibiting excellent display performance. The object of the present invention is achieved by a colored polymer thin film having an average refractive index of 1.60 to 1.90, and an absolute value of birefringence of 0.01 or less, and a color filter and a liquid crystal display using the colored polymer thin film. The color filter using the colored polymer thin film of the present invention exhibits reduced retardation, and can thus provide a liquid crystal display exhibiting excellent display performance.
    Type: Grant
    Filed: April 26, 2000
    Date of Patent: September 24, 2002
    Assignee: Toray Industries, Inc.
    Inventors: Yuka Yamashiki, Masuichi Eguchi, Takuo Watanabe, Jun Tsukamoto
  • Patent number: 5773167
    Abstract: An amorphous carbon material, especially for an electrode of a lithium ion secondary battery, is characterized by an interlayer spacing d(002), obtained from the X-ray diffraction line assigned to the (002) plane of the carbon, of 0.345 nm to 0.365 nm, a ratio (Ps) os the number of carbon atoms involved in the layer structure to the total number of carbon atoms of from 0.54 to 0.85, and a ratio of the total nitrogen:total carbon atoms in the amorphous carbon of 0.005:1 to 0.055:1. The amorphous carbon material is prepared by applying a heat treatment to an amorphous carbon under under vacuum or inert gas atmosphere for at least 30 minutes to provide the desired crystalline structure. The carbon material may take the form of carbon fiber material, especially short carbon fibers obtained by pulverizing larger carbon fibers. A lithium ion secondary battery containing an electrode comprising such an amorphous carbon material has a large discharge capacity and high charge-discharge cycle characteristics.
    Type: Grant
    Filed: June 3, 1996
    Date of Patent: June 30, 1998
    Assignee: Toray Industries, Inc.
    Inventors: Naoki Iwasaki, Takeharu Inoue, Isamu Sakuma, Naoki Shimoyama, Jun Tsukamoto, Keizo Ono