Patents by Inventor Takahiro Dazai

Takahiro Dazai 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: 9206307
    Abstract: A method of producing a structure containing a phase-separated structure, including: forming a layer including a neutralization film on a substrate; forming a layer containing a block copolymer on the layer including the neutralization film, the PA block and PB block being mutually bonded in the block copolymer, and the PB block including a structural unit other than a structural unit constituting the PA block; and subjecting the layer containing the block copolymer to an annealing treatment, such that, in the case where a surface free energy of the PA block, a surface free energy of the PB block and a surface free energy of the neutralization film are represented by a coordinate point A of the PA block, a coordinate point B of the PB block and a coordinate point N of the neutralization film, respectively in the plane of coordinates, the coordinate point N of the neutralization film is within the predetermined range.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: December 8, 2015
    Assignee: TOKYO OHKA KOGYO CO., LTD.
    Inventors: Tasuku Matsumiya, Takehiro Seshimo, Ken Miyagi, Takaya Maehashi, Takahiro Dazai, Yoshiyuki Utsumi
  • Patent number: 9188869
    Abstract: A method of forming a structure containing a phase-separated structure, the method including: a step of forming a layer containing a block copolymer having a plurality of blocks bonded and a purity of 98% or more, and a step of phase-separating the layer containing the block copolymer.
    Type: Grant
    Filed: July 29, 2014
    Date of Patent: November 17, 2015
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Takehiro Seshimo, Takahiro Dazai, Takaya Maehashi, Ken Miyagi, Yoshiyuki Utsumi
  • Publication number: 20150291832
    Abstract: A method of producing a structure containing a phase-separated structure, including forming a layer containing a block copolymer on a substrate; applying a top coat material to the layer containing the block copolymer to form a top coat film; and subjecting the layer including the block copolymer having the top coat film formed thereon to annealing treatment so as to conduct a phase separation of the layer, the top coat material including an organic solvent component and a polymeric compound containing a structural unit having either a dicarboxylic acid or a salt of a dicarboxylic acid, and the organic solvent component containing water and an alcohol having 3 or more carbon atoms.
    Type: Application
    Filed: March 31, 2015
    Publication date: October 15, 2015
    Inventors: Takehiro Seshimo, Takaya Maehashi, Takahiro Dazai, Yoshiyuki Utsumi
  • Patent number: 9122157
    Abstract: A resist composition which generates an acid upon exposure and exhibits changed solubility in a developing solution by the action of an acid, the resist composition containing a base material component which exhibits changed solubility in a developing solution by the action of an acid; and the base material component containing a resin component having a constituent unit derived from a compound represented by the following general formula (a0-1), at least two or more kinds of a constituent unit containing an acid dissociable group represented by the following general formula (a1-r-1) or (a1-r-2), and a constituent unit containing a lactone-containing, an —SO2-containing, or a carbonate-containing cyclic group; and a method for forming a resist pattern using the resist composition.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: September 1, 2015
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Masatoshi Arai, Takahiro Dazai, Yoshiyuki Utsumi
  • Patent number: 9097971
    Abstract: A compound represented by formula (I). In the formula, R1 represents a hydrocarbon group of 1 to 10 carbon atoms; Z represents a hydrocarbon group of 1 to 10 carbon atoms or a cyano group; provided that R1 and Z may be mutually bonded to form a ring; X represents a divalent linking group having any one selected from —O—C(?O)—, —NH—C(?O)— and —NH—C(?NH)— on a terminal that comes into contact with Q; p represents an integer of 1 to 3; Q represents a hydrocarbon group having a valency of (p+1), provided that, when p is 1, Q may be a single bond; R2 represents a single bond, an alkylene group which may have a substituent or an arylene group which may have a substituent; q represents 0 or 1; r represents an integer of 0 to 8; and A+ represents a metal cation or an organic cation.
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: August 4, 2015
    Assignee: TOKYO OHKA KOGYO CO., LTD.
    Inventors: Yoshiyuki Utsumi, Takahiro Dazai, Jun Iwashita, Kenri Konno
  • Publication number: 20150205207
    Abstract: A method of producing a structure containing a phase-separated structure, including a step in which a layer including an Si-containing block copolymer having a plurality of blocks bonded is formed between guide patterns on a substrate; a step in which a solution of a top coat material is applied to the layer and the guide patterns so as to form a top coat film; and a step in which the layer including the Si-containing block copolymer and having the top coat film formed thereon is subjected to annealing treatment so as to conduct a phase separation of the layer; in which a solvent of the solution of the top coat material contains no basic substance.
    Type: Application
    Filed: January 22, 2015
    Publication date: July 23, 2015
    Inventors: Takehiro Seshimo, Takaya Maehashi, Takahiro Dazai, Yoshiyuki Utsumi, Tasuku Matsumiya, Ken Miyagi, Daiju Shiono, Tsuyoshi Kurosawa
  • Patent number: 9051648
    Abstract: A method of producing a substrate provided with a metal nanostructure on the surface thereof, including: forming a layer containing a block copolymer having a plurality of polymers bonded on a surface of a substrate, and subjecting the layer to phase separation, selectively removing a phase of at least one polymer of the plurality of copolymers constituting the block copolymer from the layer to expose part of the surface of the substrate, and allowing a metal ion to come into contact with the exposed surface of the substrate to effect an electrochemical reaction between the surface of the substrate and the metal ion, thereby depositing a metal on the surface of the substrate; and a substrate provided with a metal nanostructure on the surface thereof produced by the same method.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: June 9, 2015
    Assignees: Riken, Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Shigenori Fujikawa, Mari Koizumi, Takahiro Senzaki, Takahiro Dazai, Ken Miyagi
  • Patent number: 9023580
    Abstract: A method of producing a polymeric compound, including: copolymerizing a monomer containing an —SO2— containing cyclic group with a monomer containing an acid decomposable group which exhibits increased polarity by the action of acid, thereby obtaining the polymeric compound, provided that the polymeric compound comprises no structural unit derived from a monomer that generates acid upon exposure, wherein the copolymerizing is conducted in the presence of 0.001 to 1.0 mol % of a basic compound, based on the monomer containing an —SO2— containing cyclic group.
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: May 5, 2015
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Daiju Shiono, Tomoyuki Hirano, Takahiro Dazai
  • Patent number: 8999631
    Abstract: An undercoat agent usable in phase separation of a layer formed on a substrate, the layer containing a block copolymer having a plurality of polymers bonded, the undercoat agent including a resin component, and 20 mol % to 80 mol % of all the structural units of the resin component being a structural unit derived from an aromatic ring-containing monomer; and a method of forming a pattern of a layer containing a block copolymer, the method including: step (1) coating the undercoat agent on a substrate (1), thereby forming a layer (2) composed of the undercoat agent, step (2) forming a layer (3) containing a block copolymer having a plurality of polymers bonded on the surface of the layer (2) composed of the undercoat agent, and subjecting the layer (3) containing the block copolymer to phase separation, and step (3) selectively removing a phase (3a) of at least one polymer of the plurality of copolymers constituting the block copolymer from the layer (3) containing the block copolymer.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: April 7, 2015
    Assignees: Tokyo Ohka Kogyo Co., Ltd., Riken
    Inventors: Takahiro Senzaki, Takahiro Dazai, Ken Miyagi, Shigenori Fujikawa, Harumi Hayakawa, Mari Koizumi
  • Patent number: 8987386
    Abstract: A method of producing a polymeric compound containing a structural unit that decomposes upon exposure to generate an acid, the method including: synthesizing a precursor polymer by polymerizing a water-soluble monomer having an anionic group, washing the precursor polymer with water, and subsequently subjecting the precursor polymer to a salt exchange with an organic cation. Also, a polymeric compound produced using the method of producing a polymeric compound, and a method of forming a resist pattern using the resist composition.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: March 24, 2015
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Yoshiyuki Utsumi, Takahiro Dazai, Masatoshi Arai, Takaaki Kaiho
  • Patent number: 8956810
    Abstract: An undercoat agent usable in phase separation of a layer formed on a substrate, the layer containing a block copolymer having a plurality of polymers bonded, the undercoat agent including a resin component, and 20 mol % to 80 mol % of all the structural units of the resin component being a structural unit derived from an aromatic ring-containing monomer; and a method of forming a pattern of a layer containing a block copolymer, the method including: step (1) coating the undercoat agent on a substrate (1), thereby forming a layer (2) composed of the undercoat agent, step (2) forming a layer (3) containing a block copolymer having a plurality of polymers bonded on the surface of the layer (2) composed of the undercoat agent, and subjecting the layer (3) containing the block copolymer to phase separation, and step (3) selectively removing a phase (3a) of at least one polymer of the plurality of copolymers constituting the block copolymer from the layer (3) containing the block copolymer.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: February 17, 2015
    Assignees: Tokyo Ohka Kogyo Co., Ltd., Riken
    Inventors: Takahiro Senzaki, Takahiro Dazai, Ken Miyagi, Shigenori Fujikawa, Harumi Hayakawa, Mari Koizumi
  • Publication number: 20150034595
    Abstract: A method of forming a structure containing a phase-separated structure, the method including: a step of forming a layer containing a block copolymer having a plurality of blocks bonded and a purity of 98% or more, and a step of phase-separating the layer containing the block copolymer.
    Type: Application
    Filed: July 29, 2014
    Publication date: February 5, 2015
    Inventors: Takehiro Seshimo, Takahiro Dazai, Takaya Maehashi, Ken Miyagi, Yoshiyuki Utsumi
  • Publication number: 20150034593
    Abstract: A method of producing a structure containing a phase-separated structure, including: forming a layer including a neutralization film on a substrate; forming a layer containing a block copolymer on the layer including the neutralization film, the PA block and PB block being mutually bonded in the block copolymer, and the PB block including a structural unit other than a structural unit constituting the PA block; and subjecting the layer containing the block copolymer to an annealing treatment, such that, in the case where a surface free energy of the PA block, a surface free energy of the PB block and a surface free energy of the neutralization film are represented by a coordinate point A of the PA block, a coordinate point B of the PB block and a coordinate point N of the neutralization film, respectively in the plane of coordinates, the coordinate point N of the neutralization film is within the predetermined range.
    Type: Application
    Filed: July 30, 2014
    Publication date: February 5, 2015
    Inventors: Tasuku Matsumiya, Takehiro Seshimo, Ken Miyagi, Takaya Maehashi, Takahiro Dazai, Yoshiyuki Utsumi
  • Publication number: 20150030773
    Abstract: An undercoat agent used for phase separating a layer containing a block copolymer having a block of a structural unit derived from an (?-substituted) acrylate ester on a substrate, and which contains a resin component including a structural unit represented by formula (ba0-1), and/or a structural unit represented by formula (ba0-2), and a structural unit (ba0-3) having a substrate interacting group, wherein R represents a hydrogen atom, an alkyl group of 1 to 5 carbon atoms or a halogenated alkyl group of 1 to 5 carbon atoms, R1 and R2 represent a halogen atom or an organic group of 1 to 20 carbon atoms which may contain an oxygen atom, a halogen atom, or a silicon atom, and n is 1 to 5.
    Type: Application
    Filed: July 7, 2014
    Publication date: January 29, 2015
    Inventors: Takehiro Seshimo, Tasuku Matsumiya, Takaya Maehashi, Takahiro Dazai, Yoshiyuki Utsumi
  • Patent number: 8846838
    Abstract: A fluorine-containing polymeric compound which contains a structural unit (f1) that is decomposable in an alkali developing solution as a block copolymer portion, a base component (A) that exhibits increased solubility in an alkali developing solution under the action of acid, and an acid generator component (B) that generates acid upon exposure.
    Type: Grant
    Filed: October 26, 2012
    Date of Patent: September 30, 2014
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Tasuku Matsumiya, Daiju Shiono, Tomoyuki Hirano, Takahiro Dazai
  • Patent number: 8795948
    Abstract: A resist composition including a base component (A) which generates acid upon exposure and exhibits changed solubility in a developing solution under the action of acid, the base component (A) containing a polymeric compound (A1) including a structural unit (a0) represented by general formula (a0-1) shown below, a structural unit (a1) containing an acid decomposable group which exhibits increased polarity by the action of acid and a structural unit (a6) which generates acid upon exposure (wherein R1 represents a hydrogen atom, an alkyl group or a halogenated alkyl group; W represents —COO—, —CONH— or a divalent aromatic hydrocarbon group; Y1 and Y2 represents a divalent linking group or a single bond; R?1 represents a hydrogen atom or an alkyl group of 1 to 6 carbon atoms; R?2 represents a monovalent aliphatic hydrocarbon group; and R2 represents an —SO2— containing cyclic group).
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: August 5, 2014
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Takahiro Dazai, Yoshiyuki Utsume, Jun Iwashita, Kensuke Matsuzawa, Kenri Konno
  • Patent number: 8742038
    Abstract: A resist composition for immersion exposure, including a base component (A) that exhibits changed solubility in an alkali developing solution under action of acid, an acid generator component (B) that generates acid upon exposure, and a fluorine-containing compound (C) represented by a general formula (c-1) shown below that is decomposable in an alkali developing solution: wherein R1 represents an organic group which may contain a polymerizable group, with the proviso that said polymerizable group has a carbon-carbon multiple bond, and the carbon atoms forming the multiple bond are not directly bonded to the carbon atom within the —C(?O)— group in general formula (c-1); and R2 represents an organic group having a fluorine atom.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: June 3, 2014
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Daiju Shiono, Takahiro Dazai, Sanae Furuya, Tomoyuki Hirano, Takayoshi Mori
  • Publication number: 20140147793
    Abstract: A method of forming a resist pattern using a resist composition containing a base component (A) which exhibits reduced solubility in an organic solvent under action of an acid and an acid-generator component (B) which generates an acid upon exposure, the base component (A) including a resin component (A1) having a structural unit (a0) derived from a compound represented by general formula (a0-1) shown below and a structural unit (a2) containing a lactone-containing cyclic group or the like (in formula (a0-1), Ra1 represents a monovalent substituent having a polymerizable group, La1 represents O, S or a methylene group, R1 represents a linear or branched hydrocarbon group of 2 to 20 carbon atoms which may have a substituent, or a cyclic hydrocarbon group which may have a hetero atom, and n represents an integer of 0 to 5).
    Type: Application
    Filed: November 25, 2013
    Publication date: May 29, 2014
    Applicant: TOKYO OHKA KOGYO CO., LTD.
    Inventors: Tsuyoshi Nakamura, Takahiro Dazai, Masatoshi Arai
  • Publication number: 20140147787
    Abstract: A resist composition which generates an acid upon exposure and exhibits changed solubility in a developing solution by the action of an acid, the resist composition containing a base material component which exhibits changed solubility in a developing solution by the action of an acid, the base material component containing a high-molecular weight compound having a constituent unit derived from a compound represented by the following formula (a0-1), a constituent unit containing a lactone-containing, a SO2—-containing or a carbonate-containing cyclic group, and a constituent unit containing an acid decomposable group whose polarity increases by the action of an acid, and the high-molecular weight compound having a weight average molecular weight of not more than 6,000, and a method for forming a resist pattern using the same.
    Type: Application
    Filed: November 19, 2013
    Publication date: May 29, 2014
    Applicant: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Takahiro Dazai, Masatoshi Arai, Yoshiyuki Utsumi
  • Publication number: 20140147788
    Abstract: A resist composition which generates an acid upon exposure and exhibits changed solubility in a developing solution by the action of an acid, the resist composition containing a base material component which exhibits changed solubility in a developing solution by the action of an acid; and the base material component containing a resin component having a constituent unit derived from a compound represented by the following general formula (a0-1), at least two or more kinds of a constituent unit containing an acid dissociable group represented by the following general formula (a1-r-1) or (a1-r-2), and a constituent unit containing a lactone-containing, an —SO2-containing, or a carbonate-containing cyclic group; and a method for forming a resist pattern using the resist composition.
    Type: Application
    Filed: November 20, 2013
    Publication date: May 29, 2014
    Applicant: Tokyo Ohka Kogyo co., Ltd.
    Inventors: Masatoshi Arai, Takahiro Dazai, Yoshiyuki Utsumi