Patents by Inventor Takaya Maehashi

Takaya Maehashi 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: 11747724
    Abstract: Organically modified metal oxide nanoparticles containing two or more cores including a plurality of metal atoms and a plurality of oxygen atoms covalently bonded to the plurality of metal atoms; a first modifying group that is a ligand coordinated to each of the cores and selected from the group consisting of a carboxylic acid carboxylate, a sulfonic acid sulfonate, and a phosphonic acid phosphonate; and a second modifying group that is coordinated to each of the cores and is a ligand having a structure different from that of the first modifying group and/or an inorganic anion, in which organically modified metal oxide nanoparticles have a structure in which the cores are crosslinked through a coordinate bond by at least the first modifying group.
    Type: Grant
    Filed: December 22, 2020
    Date of Patent: September 5, 2023
    Assignees: TOKYO OHKA KOGYO CO., LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventors: Kiwamu Sue, Sho Kataoka, Yusuke Yoshigoe, Takatoshi Inari, Masatoshi Arai, Takaya Maehashi, Yoshitaka Komuro, Daisuke Kawana
  • Patent number: 11709425
    Abstract: A resist composition including: a compound including an anion moiety and a cation moiety and represented by the following Formula (bd1); and an organic solvent having a hydroxyl group in which Rx1 to Rx4 each represent a hydrocarbon group or a hydrogen atom, or may be bonded to each other to form a ring structure; Ry1 and Ry2 each independently represent a hydrocarbon group or a hydrogen atom, or may be bonded to each other to form a ring structure; Rz1 to Rz4 each represent a hydrocarbon group or a hydrogen atom, or may be bonded to each other to form a ring structure; at least one of Rx1 to Rx4, Ry1 and Ry2 and Rz1 to Rz4 has an anionic group; and Mm+ represents an organic cation)
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: July 25, 2023
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Takaya Maehashi, Yoshitaka Komuro
  • Patent number: 11560444
    Abstract: A block copolymer including a first block consisting of a polymer having a repeating structure of a structural unit (u1) containing no silicon atom, and a second block consisting of a polymer having a repeating structure of a structural unit (u2) containing a silicon atom, the second block containing a block (b21) consisting of a polymer having a repeating structure of a structural unit (u21) represented by general formula (u2-1) shown below, and the volume ratio of the first block, based on all blocks constituting the block copolymer being 42 to 44 vol %: In which RP211 represents an alkyl group, a halogenated alkyl group, a hydrogen atom, or an organic group having a polar group; and RP212 is a group derived from a compound represented by formula SHRt1, wherein Rt1 represents a hydrocarbon group having 1 to 5 carbon atoms optionally having a substituent.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: January 24, 2023
    Assignees: TOKYO OHKA KOGYO CO., LTD., TOKYO INSTITUTE OF TECHNOLOGY
    Inventors: Teruaki Hayakawa, Seina Yamazaki, Akiyoshi Yamazaki, Daisuke Kawana, Yoshitaka Komuro, Takaya Maehashi, Rin Odashima
  • Patent number: 11448963
    Abstract: A resist composition including a base component and an acid generator component, the base component including a resin component having a structural unit (a0) represented by general formula (a0) shown below, and the acid generator component containing at least one of a compound (b-1), a compound (b-2) and a compound (b-3) represented by general formula (b-3) shown below in which Wa represents a divalent aromatic hydrocarbon group; Ra00 represents an acid dissociable group; R101, R104 and R106 each independently represents a hydrocarbon group containing an aromatic ring; R105, R107 and R108 each independently represents a cyclic group, a chain alkyl group which may have a substituent or a chain alkenyl group; R102 represents a fluorine atom or a fluorinated alkyl group of 1 to 5 carbon atoms and M?m+ represents an m-valent onium cation.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: September 20, 2022
    Assignee: TOKYO OHKA KOG YO CO., LTD.
    Inventors: Masatoshi Arai, Takaya Maehashi, Koshi Onishi
  • Publication number: 20220171286
    Abstract: A resist composition containing a metal compound and a polymer. A structure of the metal compound is changed upon exposure, and the metal compound exhibits changed solubility in a developing solution. The polymer segregates on a surface of a resist film in a case where the resist film is formed using the resist composition. The metal compound contains a metal ion of a metal atom of Group 3 to Group 16 in the long periodic table or a metal oxide of the metal atom, and a bonder that is bonded to the metal ion or the metal oxide. The content of the metal atom contained in the metal ion or the metal oxide is in a range of 0.2% to 3% by mass with respect to a total mass of the resist composition.
    Type: Application
    Filed: November 15, 2021
    Publication date: June 2, 2022
    Inventors: Takatoshi INARI, Masatoshi ARAI, Takaya MAEHASHI, Yoshitaka KOMURO, Daisuke KAWANA, Kiwamu SUE, Sho KATAOKA
  • Patent number: 11275307
    Abstract: A resist composition including a resin component which exhibits changed solubility in a developing solution under action of acid, the resin component including a structural unit represented by general formula (a0) shown below in which Vax0 represents a single bond or a divalent linking group; Wa represents a divalent aromatic hydrocarbon group which may have a substituent; Ya0 represents a carbon atom; Xa0 represents a group which forms a cyclic hydrocarbon group together with Ya0; Ra00 represents a hydrocarbon group which may have a substituent; provided that at least one of Xa0 and Ra00 has a carbon atom constituting a carbon-carbon unsaturated bond at an ?-position of Ya0.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: March 15, 2022
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Masatoshi Arai, Takaya Maehashi, Koshi Onishi
  • Publication number: 20210200088
    Abstract: A resist composition which generates acid upon exposure and exhibits changed solubility in a developing solution under action of acid, a total amount of a basic component including a compound represented by general formula (d0) and an acid-generator component is 25 to 60 parts by weight relative to 100 parts by weight of a base material component. In formula (d0), Rd0 represents a monovalent organic group; Xd0 represents —O—, —C(?O)—, —O—C(?O)—, —C(?O)—O—, —S— or —SO2—; Yd0 represents a single bond or a divalent hydrocarbon group which may have a substituent; Mm+ represents a m-valent organic cation; and m represents an integer of 1 or more Rd0-Xd0-Yd0-COO?(Mm?)1/m??(d0).
    Type: Application
    Filed: December 21, 2020
    Publication date: July 1, 2021
    Inventors: Toshiaki YATSUNAMI, Takaya MAEHASHI, Masahiro SHIOSAKI, Hiroshi GOHARA, Seiji TODOROKI, Koshi ONISHI, KhanhTin NGUYEN, Nobuhiro MICHIBAYASHI, Takuya IKEDA
  • Publication number: 20210191261
    Abstract: Organically modified metal oxide nanoparticles containing two or more cores including a plurality of metal atoms and a plurality of oxygen atoms covalently bonded to the plurality of metal atoms; a first modifying group that is a ligand coordinated to each of the cores and selected from the group consisting of a carboxylic acid carboxylate, a sulfonic acid sulfonate, and a phosphonic acid phosphonate; and a second modifying group that is coordinated to each of the cores and is a ligand having a structure different from that of the first modifying group and/or an inorganic anion, in which organically modified metal oxide nanoparticles have a structure in which the cores are crosslinked through a coordinate bond by at least the first modifying group.
    Type: Application
    Filed: December 22, 2020
    Publication date: June 24, 2021
    Inventors: Kiwamu SUE, Sho KATAOKA, Yusuke YOSHIGOE, Takatoshi INARI, Masatoshi ARAI, Takaya MAEHASHI, Yoshitaka KOMURO, Daisuke KAWANA
  • Publication number: 20200262960
    Abstract: A block copolymer including a first block consisting of a polymer having a repeating structure of a structural unit (u1) containing no silicon atom, and a second block consisting of a polymer having a repeating structure of a structural unit (u2) containing a silicon atom, the second block containing a block (b21) consisting of a polymer having a repeating structure of a structural unit (u21) represented by general formula (u2-1) shown below, and the volume ratio of the first block, based on all blocks constituting the block copolymer being 42 to 44 vol %: In which RP211 represents an alkyl group, a halogenated alkyl group, a hydrogen atom, or an organic group having a polar group; and RP212 is a group derived from a compound represented by formula SHRt1, wherein Rt1 represents a hydrocarbon group having 1 to 5 carbon atoms optionally having a substituent.
    Type: Application
    Filed: February 3, 2020
    Publication date: August 20, 2020
    Inventors: Teruaki HAYAKAWA, Seina YAMAZAKI, Akiyoshi YAMAZAKI, Daisuke KAWANA, Yoshitaka KOMURO, Takaya MAEHASHI, Rin ODASHIMA
  • Patent number: 10649330
    Abstract: A resist composition including a base component which exhibits changed solubility in a developing solution under action of acid, and a compound (B1) having an anion moiety and a cation moiety and being represented by general formula (b1) (wherein R01 to R014 each independently represents a hydrogen atom or a hydrocarbon group which may have a substituent, or two or more of R01 to R014 may be mutually bonded to form a ring structure, provided that at least two of R01 to R014 are mutually bonded to form a ring structure, and at least one of R01 to R014 has an anion group, and the anion moiety as a whole forms an anion having a valency of n; n represents an integer of 1 or more; represents an integer of 1 or more; and Mm+ represents an organic cation having a valency of m).
    Type: Grant
    Filed: November 27, 2017
    Date of Patent: May 12, 2020
    Assignee: TOKYO OHKA KOGYO CO., LTD.
    Inventors: Masatoshi Arai, Takaya Maehashi, Takuya Ikeda
  • Publication number: 20190384175
    Abstract: A resist composition including a resin component which exhibits changed solubility in a developing solution under action of acid, the resin component including a structural unit represented by general formula (a0) shown below in which Vax0 represents a single bond or a divalent linking group; Wa represents a divalent aromatic hydrocarbon group which may have a substituent; Ya0 represents a carbon atom; Xa0 represents a group which forms a cyclic hydrocarbon group together with Ya0; Ra00 represents a hydrocarbon group which may have a substituent; provided that at least one of Xa0 and Ra00 has a carbon atom constituting a carbon-carbon unsaturated bond at an ?-position of Ya0.
    Type: Application
    Filed: June 17, 2019
    Publication date: December 19, 2019
    Inventors: Masatoshi ARAI, Takaya MAEHASHI, Koshi ONISHI
  • Publication number: 20190384174
    Abstract: A resist composition including a base component and an acid generator component, the base component including a resin component having a structural unit (a0) represented by general formula (a0) shown below, and the acid generator component containing at least one of a compound (b-1), a compound (b-2) and a compound (b-3) represented by general formula (b-3) shown below in which Wa represents a divalent aromatic hydrocarbon group; Ra00 represents an acid dissociable group; R101, R104 and R106 each independently represents a hydrocarbon group containing an aromatic ring; R105, R107 and R108 each independently represents a cyclic group, a chain alkyl group which may have a substituent or a chain alkenyl group; R102 represents a fluorine atom or a fluorinated alkyl group of 1 to 5 carbon atoms and M?m+ represents an m-valent onium cation.
    Type: Application
    Filed: June 14, 2019
    Publication date: December 19, 2019
    Inventors: Masatoshi ARAI, Takaya MAEHASHI, Koshi ONISHI
  • Publication number: 20190361342
    Abstract: A resist composition including: a compound including an anion moiety and a cation moiety and represented by the following Formula (bd1); and an organic solvent having a hydroxyl group in which Rx1 to Rx4 each represent a hydrocarbon group or a hydrogen atom, or may be bonded to each other to form a ring structure; Ry1 and Ry2 each independently represent a hydrocarbon group or a hydrogen atom, or may be bonded to each other to form a ring structure; Rz1 to Rz4 each represent a hydrocarbon group or a hydrogen atom, or may be bonded to each other to form a ring structure; at least one of Rx1 to Rx4, Ry1 and Ry2 and Rz1 to Rz4 has an anionic group; and Mm+ represents an organic cation)
    Type: Application
    Filed: May 23, 2019
    Publication date: November 28, 2019
    Inventors: Takaya MAEHASHI, Yoshitaka KOMURO
  • Patent number: 10414918
    Abstract: A method for preparing a polymer compound including copolymerizing a monomer (m0-1) and a monomer (m0-2) to obtain a first polymer compound and causing the first polymer compound and an acid component to react with each other to obtain a second polymer compound. In the formulae, R1 and R2 are each a hydrogen atom, an alkyl group having 1 to 5 carbon atoms and a halogenated alkyl group having 1 to 5 carbon atoms, Va01 is a divalent hydrocarbon group which may have an ether bond, na01 is an integer of 0 to 2, Ra10 is a tertiary alkyl ester-type acid dissociable group, Va02 is a divalent linking group containing a heteroatom, or a single bond, Ra07 is a monovalent organic group, na021 is an integer of 0 to 3, Ra20 is an acid dissociable group, and na022 is an integer of 1 to 3.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: September 17, 2019
    Assignee: TOKYO OHKA KOGYO CO., LTD.
    Inventors: Yoshitaka Komuro, Masatoshi Arai, Koshi Onishi, KhanhTin Nguyen, Masahiro Shiosaki, Takuya Ikeda, Takaya Maehashi
  • Patent number: 10295905
    Abstract: A resist composition which generates an acid upon exposure and whose solubility on a developing solution changes under the action of the acid, including a polymer compound having units represented by formulas (a0-1), (a0-2), and (a0-3) in an amount of 0 to 10 mol %. In the formulas, R is a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a halogenated alkyl group having 1 to 5 carbon atoms, Va01 and Va03 are a divalent hydrocarbon group, na01 and na03 each are an integer of 0 to 2, Ra0? is a specific acid dissociable group, Va02 is a divalent linking group containing a hetero atom or a single bond, Ra07 is a monovalent organic group, na021 is an integer of 0 to 3, and na022 is an integer of 1 to 3.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: May 21, 2019
    Assignee: TOKYO OHKA KOGYO CO., LTD.
    Inventors: Yoshitaka Komuro, Masatoshi Arai, Koshi Onishi, KhanhTin Nguyen, Takaya Maehashi
  • Patent number: 10179866
    Abstract: A resin composition for forming a phase-separated structure, including: a block copolymer, and an ion liquid containing a compound (IL) having a cation moiety and an anion moiety, the cation moiety of the compound (IL) having a dipole moment of 3 debye or more.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: January 15, 2019
    Assignees: TOKYO OHKA KOGYO CO., LTD., THE UNIVERSITY OF CHICAGO
    Inventors: Akiya Kawaue, Takehiro Seshimo, Takaya Maehashi, Tasuku Matsumiya, Ken Miyagi, Hitoshi Yamano, Xuanxuan Chen, Paul Franklin Nealey
  • Publication number: 20180149973
    Abstract: A resist composition including a base component which exhibits changed solubility in a developing solution under action of acid, and a compound (B1) having an anion moiety and a cation moiety and being represented by general formula (b1) (wherein R01 to R014 each independently represents a hydrogen atom or a hydrocarbon group which may have a substituent, or two or more of R01 to R014 may be mutually bonded to form a ring structure, provided that at least two of R01 to R014 are mutually bonded to form a ring structure, and at least one of R01 to R014 has an anion group, and the anion moiety as a whole forms an anion having a valency of n; n represents an integer of 1 or more; represents an integer of 1 or more; and Mm+ represents an organic cation having a valency of m).
    Type: Application
    Filed: November 27, 2017
    Publication date: May 31, 2018
    Inventors: Masatoshi ARAI, Takaya MAEHASHI, Takuya IKEDA
  • Publication number: 20180072564
    Abstract: A resin composition for forming a phase-separated structure includes a block copolymer having a block (b1) having a repeating structure of styrene units; a block (b2) having a repeating structure of methyl methacrylate units partially substituted with a constituent unit represented by general formula (h1); and a number average molecular weight of less than 28,000. In general formula (h1), Rh0 is a hydrophilic functional group.
    Type: Application
    Filed: July 18, 2017
    Publication date: March 15, 2018
    Inventors: Ken MIYAGI, Takehiro SESHIMO, Takaya MAEHASHI, Takahiro DAZAI, Hitoshi YAMANO, Toshifumi SATOH, Takuya ISONO
  • Patent number: 9914847
    Abstract: A resin composition for forming a phase-separated structure, including: a block copolymer, and an ion liquid containing a compound (IL) having a cation moiety and an anion moiety, the energy of the LUMO of the cation moiety being ?4.5 eV or more, and the energy difference between the LUMO and the HOMO of the cation moiety being 10.0 ev or more, or the Log P value of the anion moiety being 1 to 3.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: March 13, 2018
    Assignees: TOKYO OHKA KOGYO CO., LTD., THE UNIVERSITY OF CHICAGO
    Inventors: Akiya Kawaue, Takehiro Seshimo, Takaya Maehashi, Tasuku Matsumiya, Ken Miyagi, Hitoshi Yamano, Xuanxuan Chen, Paul Franklin Nealey
  • Publication number: 20180022916
    Abstract: A method for preparing a polymer compound including copolymerizing a monomer (m0-1) and a monomer (m0-2) to obtain a first polymer compound and causing the first polymer compound and an acid component to react with each other to obtain a second polymer compound. In the formulae, R1 and R2 are each a hydrogen atom, an alkyl group having 1 to 5 carbon atoms and a halogenated alkyl group having 1 to 5 carbon atoms, Va01 is a divalent hydrocarbon group which may have an ether bond, na01 is an integer of 0 to 2, Ra10 is a tertiary alkyl ester-type acid dissociable group, Va02 is a divalent linking group containing a heteroatom, or a single bond, Ra07 is a monovalent organic group, na021 is an integer of 0 to 3, Ra20 is an acid dissociable group, and na022 is an integer of 1 to 3.
    Type: Application
    Filed: July 5, 2017
    Publication date: January 25, 2018
    Inventors: Yoshitaka KOMURO, Masatoshi ARAI, Koshi ONISHI, KhanhTin NGUYEN, Masahiro SHIOSAKI, Takuya IKEDA, Takaya MAEHASHI