Patents by Inventor Kiyofumi Takano

Kiyofumi Takano 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: 9166182
    Abstract: The object of the present invention is to provide an organic transistor using an organic semiconductor having excellent transistor properties, and a method for producing the organic transistor, the present invention providing, first, an organic transistor including a gate electrode (b), an insulating layer (c), an organic semiconductor layer (d) which contacts the insulating layer (c) and has a channel formation area, and source/drain electrodes (e), which are formed on (a) a substrate, wherein the organic semiconductor layer (d) contains a fluorine-based compound (surfactant), and, secondly, a method for producing an organic transistor comprising a gate electrode (b), an insulating layer (c), an organic semiconductor layer (d) which contacts the insulating layer (c) and has a channel formation area, and source/drain electrodes (e), which are formed on (a) a substrate, the method comprising: a step in which the organic semiconductor layer (d) is formed on the insulating layer (c) by printing or coating an org
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: October 20, 2015
    Assignee: DIC Corporation
    Inventors: Masayoshi Kotake, Masanori Kasai, Hisatomo Yonehara, Kiyofumi Takano
  • Publication number: 20140011954
    Abstract: An object of the present invention is to provide a method for producing porous silica particles having a small particle diameter in high yield relative to a volume of a reaction solution. In order to achieve the object, the present invention provides a method for producing porous silica particles having pores on the surfaces thereof, the method including a step of adding a mixed solution (solution A) containing tetraalkoxysilane, alkylamine, and alcohol to a mixed solution (solution B) containing ammonia, alcohol, and water and performing a hydrolysis and condensation reaction of the tetraalkoxysilane to produce silica particles, and a step of removing the alkylamine from the silica particles.
    Type: Application
    Filed: January 19, 2012
    Publication date: January 9, 2014
    Applicant: DIC CORPORATION
    Inventors: Hiroki Tokoro, Youzou Yamashina, Kiyofumi Takano, Tomoyo Shimogaki, Minoru Tabuchi, Tomoe Deguchi
  • Patent number: 8623478
    Abstract: Provided is an ink that is the most suitable for a method for forming an organic transistor by transferring a pattern using a liquid-repellent transfer substrate, for example, a microcontact printing method or a reverse printing method. Specifically, provided is an organic semiconductor ink composition which can provide a uniform ink coating film on a surface of a liquid-repellent transfer substrate and which can provide a dry ink film or a semi-dry ink film capable of being easily transferred from the transfer substrate to a transfer-receiving base material. Also provided is a method for forming an organic semiconductor pattern of an organic transistor, the method using the organic semiconductor ink composition. The organic semiconductor ink composition used for obtaining a desired pattern by transferring an ink layer formed on a liquid-repellent transfer substrate to a printing base material contains an organic semiconductor, an organic solvent, and a fluorine-based surfactant.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: January 7, 2014
    Assignee: DIC Corporation
    Inventors: Masayoshi Koutake, Masanori Kasai, Hisatomo Yonehara, Kiyofumi Takano
  • Patent number: 8410210
    Abstract: A fluorine-containing novolac resin represented by the following formula, as well as a fluorine based surfactant and a fluorine based surfactant composition, which include the fluorine-containing novolac resin. In the formula, R represents a fluorinated alkyl-containing substituent, R? represents a hydrogen atom or a methyl group, R? represents a hydrogen atom or a non-fluorinated substituent, —X— represents any one of following four types of linking groups, —X? represents any one of three following types of substituents, n represents 0 or an integer of 1 or more, m represents an integer of 1 or more, and n+m is an integer of 2 or more.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: April 2, 2013
    Assignee: DIC Corporation
    Inventors: Hideya Suzuki, Shin Sasamoto, Kiyofumi Takano
  • Publication number: 20120100667
    Abstract: Provided is an ink that is the most suitable for a method for forming an organic transistor by transferring a pattern using a liquid-repellent transfer substrate, for example, a microcontact printing method or a reverse printing method. Specifically, provided is an organic semiconductor ink composition which can provide a uniform ink coating film on a surface of a liquid-repellent transfer substrate and which can provide a dry ink film or a semi-dry ink film capable of being easily transferred from the transfer substrate to a transfer-receiving base material. Also provided is a method for forming an organic semiconductor pattern of an organic transistor, the method using the organic semiconductor ink composition. The organic semiconductor ink composition used for obtaining a desired pattern by transferring an ink layer formed on a liquid-repellent transfer substrate to a printing base material contains an organic semiconductor, an organic solvent, and a fluorine-based surfactant.
    Type: Application
    Filed: March 30, 2010
    Publication date: April 26, 2012
    Applicant: DIC Corporation
    Inventors: Masayoshi Koutake, Masanori Kasai, Hisatomo Yonehara, Kiyofumi Takano
  • Publication number: 20110121281
    Abstract: The object of the present invention is to provide an organic transistor using an organic semiconductor having excellent transistor properties, and a method for producing the organic transistor, the present invention providing, first, an organic transistor including a gate electrode (b), an insulating layer (c), an organic semiconductor layer (d) which contacts the insulating layer (c) and has a channel formation area, and source/drain electrodes (e), which are formed on (a) a substrate, wherein the organic semiconductor layer (d) contains a fluorine-based compound (surfactant), and, secondly, a method for producing an organic transistor comprising a gate electrode (b), an insulating layer (c), an organic semiconductor layer (d) which contacts the insulating layer (c) and has a channel formation area, and source/drain electrodes (e), which are formed on (a) a substrate, the method comprising: a step in which the organic semiconductor layer (d) is formed on the insulating layer (c) by printing or coating an org
    Type: Application
    Filed: June 29, 2009
    Publication date: May 26, 2011
    Applicant: DIC CORPORATION
    Inventors: Masayoshi Kotake, Masanori Kasai, Hisatomo Yonehara, Kiyofumi Takano
  • Publication number: 20100113678
    Abstract: A fluorine-containing novolac resin represented by the following formula, as well as a fluorine based surfactant and a fluorine based surfactant composition, which include the fluorine-containing novolac resin. In the formula, R represents a fluorinated alkyl-containing substituent, R? represents a hydrogen atom or a methyl group, R? represents a hydrogen atom or a non-fluorinated substituent, —X— represents any one of following four types of linking groups, —X? represents any one of three following types of substituents, n represents 0 or an integer of 1 or more, m represents an integer of 1 or more, and n+m is an integer of 2 or more.
    Type: Application
    Filed: May 21, 2008
    Publication date: May 6, 2010
    Applicant: DIC CORPORATION
    Inventors: Hideya Suzuki, Shin Sasamoto, Kiyofumi Takano
  • Patent number: 7592405
    Abstract: A fluorine-containing photocurable composition containing a (meth)acrylate having a fluorinated alkyl group (A) and a photopolymerization initiator (B). The (meth)acrylate (A) includes a group represented by general formula (1) and two or more (meth)acryloyl groups, and a fluorine atom content in one molecule of the acrylate is 25% by weight or more, and molecular weight of the (meth)acrylate is 500 to 4000 (in the general formula (1), R represents a hydrogen atom or alkyl group having 1 to 4 carbon atoms; X represents an alkylene chain, which may have a hetero atom, or a connecting group represented by the following general formula (2); and Rf represents a fluorinated alkyl group) (in the formula (2), Y represents an oxygen atom or a sulfur atom, m and n are an integer of 1 to 4 which may be the same as or different from each other; and Rf1 is a fluorinated alkyl group).
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: September 22, 2009
    Assignee: DIC Corporation
    Inventors: Tsuneyuki Otaguro, Hiroshi Kinoshita, Kiyofumi Takano, Hirofumi Yamaguchi
  • Patent number: 7537882
    Abstract: The object of the present invention is to provide an anti-reflective coating composition having excellent coating properties while maintaining performance as an anti-reflective film. An anti-reflective coating composition comprising at least the following components (A), (B), (C), (D), and (E) and a production method for a pattern using the anti-reflective coating composition, (A) perfluoroalkyl•alkylenesulfonic acid represented by the following formula (1): CnF2n+1(CH2CH2)mSO3H (1) (wherein, n represents an integer from 1 to 20, and m represents an integer from 0 to 20); (B) organic amine; (C) water-soluble polymer; (D) perfluoroalkylethyl group containing compound represented by the following formula (2): CkF2k+1CH2CH2—X—Y (2) (wherein, k represents an integer from 1 to 20, x represents a single bond or a divalent linking group, y represents an anionic group or a nonionic group, and this compound has a structure different from that of the component (A)); and (E) water.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: May 26, 2009
    Assignees: Dainippon Ink and Chemicals, Inc., AZ Electronic Materials (Japan) K.K.
    Inventors: Jirou Matsuo, Kiyofumi Takano, Yusuke Takano, Yasushi Akiyama
  • Publication number: 20070238048
    Abstract: The object of the present invention is to provide an anti-reflective coating composition having excellent coating properties while maintaining performance as an anti-reflective film. An anti-reflective coating composition comprising at least the following components (A), (B), (C), (D), and (E) and a production method for a pattern using the anti-reflective coating composition, (A) perfluoroalkyl•alkylenesulfonic acid represented by the following formula (1): CnF2n+1(CH2CH2)mSO3H (1) (wherein, n represents an integer from 1 to 20, and m represents an integer from 0 to 20); (B) organic amine; (C) water-soluble polymer; (D) perfluoroalkylethyl group containing compound represented by the following formula (2): CkF2k+1CH2CH2—X—Y (2) (wherein, k represents an integer from 1 to 20, x represents a single bond or a divalent linking group, y represents an anionic group or a nonionic group, and this compound has a structure different from that of the component (A)); and (E) water.
    Type: Application
    Filed: June 29, 2005
    Publication date: October 11, 2007
    Applicants: DAINIPPON INK AND CHEMICALS, INC., AZ ELECTRONIC MATTERIALS (JAPAN) K.K.
    Inventors: Jirou Matsuo, Kiyofumi Takano, Yusuke Takano, Yasushi Akiyama
  • Publication number: 20070066779
    Abstract: A fluorine-containing photocurable composition containing a (meth)acrylate having a fluorinated alkyl group (A) and a photopolymerization initiator (B). The (meth)acrylate (A) includes a group represented by general formula (1) and two or more (meth)acryloyl groups, and a fluorine atom content in one molecule of the acrylate is 25% by weight or more, and molecular weight of the (meth)acrylate is 500 to 4000 (in the general formula (1), R represents a hydrogen atom or alkyl group having 1 to 4 carbon atoms; X represents an alkylene chain, which may have a hetero atom, or a connecting group represented by the following general formula (2); and Rf represents a fluorinated alkyl group) (in the formula (2), Y represents an oxygen atom or a sulfur atom, m and n are an integer of 1 to 4 which may be the same as or different from each other; and Rf1 is a fluorinated alkyl group).
    Type: Application
    Filed: November 18, 2004
    Publication date: March 22, 2007
    Inventors: Tsuneyuki Otaguro, Hiroshi Kinoshita, Kiyofumi Takano, Hirofumi Yamaguchi
  • Patent number: 6716943
    Abstract: The invention provides a surface active agent containing fluorine, which is a copolymer composed of several ethylenic unsaturated monomers containing a fluorinated alkyl group, a silicone chain, and a polyoxyalkylene group, and the surface loss energy of which is less than 110×10−5 mJ in an organic solvent. The copolymer of the surface active agent is soluble to water and in various organic solvents, and has a good compatibility with other ingredients used to form the coating compositions. The present surface active agent reduces the dynamic surface tension of the coating composition, and thereby, have a good foam-preventing property, coating compositions containing the present surface active agent yield coated films with uniform and smooth level surfaces without forming irregularity and striation even by coating operations at high speed and high shearing force.
    Type: Grant
    Filed: January 14, 2002
    Date of Patent: April 6, 2004
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Kazunori Tanaka, Kiyofumi Takano, Torao Higuchi, Yutaka Hashimoto
  • Publication number: 20020103316
    Abstract: The invention provides a surface active agent containing fluorine, which is a copolymer composed of several ethylenic unsaturated monomers containing a fluorinated alkyl group, a silicone chain, and a polyoxyalkylene group, and the surface loss energy of which is less than 110×10−5 mJ in an organic solvent. The copolymer of the surface active agent is soluble to water and in various organic solvents, and has a good compatibility with other ingredients used to form the coating compositions. The present surface active agent reduces the dynamic surface tension of the coating composition, and thereby, have a good foam-preventing property, coating compositions containing the present surface active agent yield coated films with uniform and smooth level surfaces without forming irregularity and striation even by coating operations at high speed and high shearing force.
    Type: Application
    Filed: January 14, 2002
    Publication date: August 1, 2002
    Applicant: Dainippon Ink. and Chemicals, Inc.
    Inventors: Kazunori Tanaka, Kiyofumi Takano, Torao Higuchi, Yutaka Hashimoto
  • Patent number: 6384168
    Abstract: The invention provides a surface active agent containing fluorine, which is a copolymer composed of several ethylenic unsaturated monomers containing a fluorinated alkyl group, a silicone chain, and a polyoxyalkylene group, and the surface loss energy of which is less than 110×10−5 mJ in an organic solvent. The copolymer of the surface active agent is soluble to water and in various organic solvents, and has a good compatibility with other ingredients used to form the coating compositions. The present surface active agent reduces the dynamic surface tension of the coating composition, and thereby, have a good foam-preventing property, coating compositions containing the present surface active agent yield coated films with uniform and smooth level surfaces without forming irregularity and striation even by coating operations at high speed and high shearing force.
    Type: Grant
    Filed: October 31, 2000
    Date of Patent: May 7, 2002
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Kazunori Tanaka, Kiyofumi Takano, Torao Higuchi, Yutaka Hashimoto
  • Patent number: 6313244
    Abstract: The invention provides a surface active agent containing fluorine, which is a copolymer composed of several ethylenic unsaturated monomers containing a fluorinated alkyl group, a silicone chain, and a polyoxyalkylene group, and the surface loss energy of which is less than 110×10−5 mJ in an organic solvent. The copolymer of the surface active agent is soluble to water and in various organic solvents, and has a good compatibility with other ingredients used to form the coating compositions. The present surface active agent reduces the dynamic surface tension of the coating composition, and thereby, have a good foam-preventing property, coating compositions containing the present surface active agent yield coated films with uniform and smooth level surfaces without forming irregularity and striation even by coating operations at high speed and high shearing force.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: November 6, 2001
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Kazunori Tanaka, Kiyofumi Takano, Torao Higuchi, Yutaka Hashimoto
  • Patent number: 6309789
    Abstract: The anti-reflective coating composition comprising at least perfluoroalkylsulfonic acid (A) represented by the general formula: CnF2n+1SO3H (n is an integer of 4 to 8), organic amine (B), water-soluble polymer (C), perfluoroalkyl sulfonamide (D) represented by the general formula: CnF2n+1SO2NH2 (n is an integer of 1 to 8) and water (E) and having a pH value of 1.3 to 3.3 is applied onto a photoresist film formed on a substrate, thus forming an anti-reflective coating. The photoresist and anti-reflective coating are then exposed to light and developed to give a resist pattern. The coating composition can form a uniform anti-reflective coating free of standing wave, multiple reflection, T-top and PED (Post Exposure Delay) in a small amount of drip onto any types of resists regardless of the surface shape of a substrate.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: October 30, 2001
    Assignees: Clariant Finance (BVI) Limited, Dainippon Ink and Chemicals, Inc.
    Inventors: Yusuke Takano, Hatsuyuki Tanaka, Kiyofumi Takano, Yutaka Hashimoto
  • Patent number: 6156860
    Abstract: The invention provides a surface active agent containing fluorine, which is a copolymer composed of several ethylenic unsaturated monomers containing a fluorinated alkyl group, a silicone chain, and a polyoxyalkylene group, and the surface loss energy of which is less than 110.times.10.sup.-5 mJ in an organic solvent. The copolymer of the surface active agent is soluble to water and in various organic solvents, and has a good compatibility with other ingredients used to form the coating compositions. The present surface active agent reduces the dynamic surface tension of the coating composition, and thereby, have a good foam-preventing property, coating compositions containing the present surface active agent yield coated films with uniform and smooth level surfaces without forming irregularity and striation even by coating operations at high speed and high shearing force.
    Type: Grant
    Filed: February 17, 1998
    Date of Patent: December 5, 2000
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Kazunori Tanaka, Kiyofumi Takano, Torao Higuchi, Yutaka Hashimoto