Patents by Inventor Koshi ONISHI

Koshi ONISHI 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).

  • Publication number: 20250224675
    Abstract: A resist composition having favorable sensitivity, roughness characteristics, and etching resistance; a resist pattern formation method; and a novel compound that is useful as a resin component for the resist composition. The resist composition generates an acid upon exposure to light and changes solubility in developing solutions by the action of the acid, and includes a polymer compound having a constituent unit derived from a compound represented by general formula (a0-m0), as a resin component that changes in solubility in developing solutions by the action of an acid.
    Type: Application
    Filed: April 21, 2023
    Publication date: July 10, 2025
    Inventor: Koshi ONISHI
  • Publication number: 20250172874
    Abstract: A resist composition containing a resin component having a constitutional unit derived from a compound represented by General Formula (a0-1) in which W01 represents a polymerizable group-containing group; RAr represents an aromatic group; Ra0 represents an acid dissociable group represented by General Formula (a0-r-1); Ra01 represents an aliphatic hydrocarbon group; Ra02, Ra03, and Ra04 represent a hydrocarbon group or a hydrogen atom; Ra01 and Ra02 may be bonded to each other to form an alicyclic structure; Ra03 and Ra04 may be bonded to each other to form an aromatic ring structure or an alicyclic structure.
    Type: Application
    Filed: March 9, 2023
    Publication date: May 29, 2025
    Inventors: Issei SUZUKI, KhanhTin NGUYEN, Koshi ONISHI
  • Publication number: 20250155805
    Abstract: A resist composition including a resin component which has a constitutional unit (a01) derived from a compound represented by General Formula (a0-1) and a constitutional unit (a02) derived from a compound represented by General Formula (a0-2), in which W01 and W02 represent a polymerizable group-containing group, Ya01 and Ya02 represent a single bond or a divalent linking group, Rax01 represents an acid dissociable group represented by Formula (a0-r-1) or (a0-r-2), q01 and q02 represent an integer of 0 to 3, n01 and n02 represent an integer of 1 or greater, Ra01 to Ra03 represent a hydrocarbon group, Ra04 represents a hydrocarbon group, Ra05a and Ra05b represent a hydrogen atom and Ra06 represents a hydrogen atom
    Type: Application
    Filed: March 2, 2023
    Publication date: May 15, 2025
    Inventors: Issei SUZUKI, Koshi ONISHI
  • Publication number: 20250155811
    Abstract: A resist composition containing a resin component having a constitutional unit derived from a compound represented by General Formula (a0-1) in which Rm represents an alkyl group, a halogenated alkyl group, a halogen atom, or a hydrogen atom; L1 represents an aliphatic hydrocarbon group; n represents an integer of 0 to 2; Ra0 represents an acid dissociable group; Ra01 represents an aliphatic hydrocarbon group; Ra02, Ra03, and Ra04 represent a hydrocarbon group or a hydrogen atom; Ra01 and Ra02 may be bonded to each other to form an alicyclic structure; Ra03 and Ra04 may be bonded to each other to form an aromatic ring structure or an alicyclic structure; the alicyclic structure formed by Ra01 and Ra02 being bonded to each other and the aromatic ring structure or alicyclic structure formed by Ra03 and Ra04 being bonded to each other may be condensed to each other; and Ra05 represents a chain-like or alicyclic hydrocarbon group, or a hydrogen atom
    Type: Application
    Filed: March 9, 2023
    Publication date: May 15, 2025
    Inventors: Issei SUZUKI, KhanhTin NGUYEN, Koshi ONISHI
  • Publication number: 20250076759
    Abstract: A resist composition which generates an acid upon light exposure and whose solubility in a developing solution is changed due to an action of the acid, in which a polymer compound having a constitutional unit derived from a compound represented by General formula (a0-1) is employed as a resin component whose solubility in a developing solution is changed due to the action of the acid. In General Formula (a0-1), W01 represents a polymerizable group-containing group, W02 represents an aromatic hydrocarbon group, Ya01 represents a divalent linking group or a single bond, Ra01 represents an acid dissociable group.
    Type: Application
    Filed: January 20, 2023
    Publication date: March 6, 2025
    Inventors: Koshi Onishi, Junichi Miyakawa
  • Publication number: 20240302741
    Abstract: A resist composition that contains a resin component having a constitutional unit containing an acid-dissociable group represented by General Formula (a01-r) below and contains an acid generator component containing a compound represented by General Formula (b0) below. In General Formula (a01-r), Ra01 and Ra02 represent a saturated aliphatic hydrocarbon group, Ra01 and Ra02 may be bonded to each other to form an alicyclic group. Ra03 to Ra05 represent an aliphatic hydrocarbon group and two or more of Ra03 to Ra05 may be bonded to each other to form an alicyclic group.
    Type: Application
    Filed: June 10, 2022
    Publication date: September 12, 2024
    Inventors: Shuichi Ishii, Hiroki Kato, KhanhTin Nguyen, Takuya Ikeda, Koshi Onishi, Rin Odashima, Tetsuo Fujinami, Seiji Todoroki, Ryo Kawatani
  • Publication number: 20240248403
    Abstract: A resist composition including a resin component (A1) which has a constitutional unit (a0) containing a photodegradable base that is decomposed upon light exposure and loses acid diffusion controllability, and an acid generator component (B) which contains a compound (BO) represented by General Formula (b0) in which X0 represents a bromine atom or an iodine atom, Rm represents a hydroxy group, an alkyl group, a fluorine atom, or a chlorine atom, nb1 represents an integer of 1 to 5, and nb2 represents an integer of 0 to 4, where 1?nb1+nb2?5 is satisfied, Yb0 represents a divalent linking group or a single bond, Vb0 represents a single bond, an alkylene group, or a fluorinated alkylene group, R0 represents a hydrogen atom, a fluorinated alkyl group having 1 to 5 carbon atoms, or a fluorine atom, Mm+ represents an m-valent organic cation, and m represents an integer of 1 or greater
    Type: Application
    Filed: June 6, 2022
    Publication date: July 25, 2024
    Inventors: Tetsuya Matsushita, Koshi Onishi, Shuichi Ishii, Junichi Miyakawa
  • Patent number: 11829068
    Abstract: A resist composition that generates acid upon exposure and exhibits changed solubility in a developing solution under action of acid, which contains a resin component (A1) exhibiting changed solubility in a developing solution under action of acid, the resin component (A1) has a constitutional unit (a01) derived from a compound represented by General Formula (a0-1), W01 represents a polymerizable group-containing group, Ya01 represents a single bond or a divalent linking group, Ra01 represents a cyclic acid dissociable group, q represents an integer in a range of 0 to 3, and n represents an integer of 1 or more, provided that n?q×2+4 is satisfied
    Type: Grant
    Filed: October 11, 2021
    Date of Patent: November 28, 2023
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Koshi Onishi, Masatoshi Arai, Junichi Miyakawa
  • Patent number: 11703756
    Abstract: A resist composition including a compound represented by formula (bd1), a total amount of the acid-generator component and the basic component being 20 to 70 parts by weight, relative to 100 parts by weight of the base material component. In the formula, Rx1 to Rx4 represents a hydrogen atom or a hydrocarbon group, or two or more of Rx1 to Rx4 may be mutually bonded to form a ring structure; Ry1 and Ry2 represents a hydrogen atom or a hydrocarbon group, or Ry1 and Ry2 may be mutually bonded to form a ring structure; Rz1 to Rz4 represents a hydrogen atom or a hydrocarbon group, or two or more of Rz1 to Rz4 may be mutually bonded to form a ring structure; provided that at least one of Rx1 to Rx4, Ry1, Ry2 and Rz1 to Rz4 has an anionic group; and Mm+ represents an m-valent organic cation).
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: July 18, 2023
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Koshi Onishi, KhanhTin Nguyen, Masatoshi Arai, Yoshitaka Komuro
  • 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: 20220121116
    Abstract: A resist composition containing a resin component (A1) having a constitutional unit (a01) derived from a compound represented by General Formulae (a0-1) and one or more compounds selected from the group consisting of a compound (B01) represented by General Formula (b0-1) and a compound (B02) represented by General Formula (b0-2), W01 represents a polymerizable group-containing group, Ya01 represents a single bond or the like, Rx01 represents an acid dissociable group, Rb1 and Rb4 represents an aryl group having a fluorine atom, Rb2, Rb3, and Rb5 represents an aryl group or the like which may have a substituent, and X01? and X02? represents a counter anion
    Type: Application
    Filed: October 11, 2021
    Publication date: April 21, 2022
    Inventors: Koshi ONISHI, Masatoshi ARAI, Masahito YAHAGI, Yosuke SUZUKI, Yuta IWASAWA
  • Publication number: 20220121117
    Abstract: A resist composition that generates acid upon exposure and exhibits changed solubility in a developing solution under action of acid, which contains a resin component (A1) exhibiting changed solubility in a developing solution under action of acid, the resin component (A1) has a constitutional unit (a01) derived from a compound represented by General Formula (a0-1), W01 represents a polymerizable group-containing group, Ya01 represents a single bond or a divalent linking group, Ra01 represents a cyclic acid dissociable group, q represents an integer in a range of 0 to 3, and n represents an integer of 1 or more, provided that n?q×2+4 is satisfied
    Type: Application
    Filed: October 11, 2021
    Publication date: April 21, 2022
    Inventors: Koshi ONISHI, Masatoshi ARAI, Junichi MIYAKAWA
  • Publication number: 20220121118
    Abstract: A resist composition containing a resin component (A1) having a constitutional unit (a01) derived from a compound represented by General Formula (a0-1) and containing a compound (D0) represented by General Formula (d0), W01 represents a polymerizable group-containing group, Ya01 represents a single bond or the like, Rx01 represents an acid dissociable group, Mm+ represents an m-valent organic cation, and Rd0 represents a substituent
    Type: Application
    Filed: October 6, 2021
    Publication date: April 21, 2022
    Inventors: Masahito YAHAGI, Tasuku MATSUMIYA, Yosuke SUZUKI, Yuta IWASAWA, Takahiro KOJIMA, Koshi ONISHI
  • 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: 20220011666
    Abstract: A resist composition containing a resin component (A1) exhibiting changed solubility in a developing solution under action of acid, the resin component (A1) having a constitutional unit (a01) derived from a compound represented by General Formula (a01-1). In the formula, W01 represents a polymerizable group-containing group, Ct represents a tertiary carbon atom, and Xt represents a group that forms a monocyclic or polycyclic alicyclic group together with Ct, where the alicyclic group has an oxygen atom or a sulfur atom in the ring structure, Ra1 to Ra3 each independently represents a hydrocarbon group having 1 to 10 carbon atoms which may have a substituent.
    Type: Application
    Filed: June 11, 2021
    Publication date: January 13, 2022
    Inventors: Koshi Onishi, Seiji Todoroki
  • Patent number: 11181822
    Abstract: A resist composition including a compound represented by formula (bd1), a total amount of the acid-generator component and the basic component being 20 to 70 parts by weight, relative to 100 parts by weight of the base material component. In the formula, Rx1 to Rx4 represents a hydrogen atom or a hydrocarbon group, or two or more of Rx1 to Rx4 may be mutually bonded to form a ring structure; Ry1 and Ry2 represents a hydrogen atom or a hydrocarbon group, or Ry1 and Ry2 may be mutually bonded to form a ring structure; Rz1 to Rz4 represents a hydrogen atom or a hydrocarbon group, or two or more of Rz1 to Rz4 may be mutually bonded to form a ring structure; provided that at least one of Rx1 to Rx4, Ry1, Ry2 and Rz1 to Rz4 has an anionic group; and Mm+ represents an m-valent organic cation).
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: November 23, 2021
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Koshi Onishi, KhanhTin Nguyen, Masatoshi Arai, Yoshitaka Komuro
  • 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: 20210055656
    Abstract: A resist composition including a resin component having a structural unit (a0) represented by general formula (a0) in which Va0 represents a linear or branched alkylene group, a linear or branched fluorinated alkylene group, —Y01—O—C(?O)—Y02— or —Y01—C(?O)—O—Y02—; Y01 and Y02 each independently represents a linear or branched alkylene group; Ya0 represents a carbon atom; Xa0 represents a group which forms a monocyclic hydrocarbon group together with Ya0, provided that part or all of the hydrogen atoms of the cyclic hydrocarbon group may be substituted with a substituent; Ra00 represents a hydrocarbon group which may have a substituent; provided that at least one of Xa0 and Ra00 has a carbon-carbon unsaturated bond at an ?-position of Ya0.
    Type: Application
    Filed: August 19, 2020
    Publication date: February 25, 2021
    Inventors: Koshi ONISHI, Masatoshi ARAI, Yoshitaka KOMURO
  • Patent number: 10908502
    Abstract: A resist composition including a resin component having a structural unit derived from a compound represented by formula (a0-1), in which W represents a polymerizable group-containing group; Ra01 represents an alkyl group or an aromatic heterocyclic group containing an oxygen atom or a sulfur atom; in the case where Ra01 is an aromatic heterocyclic group containing an oxygen atom or a sulfur atom, Ra02 is a group which forms an aliphatic cyclic group containing an electron-withdrawing group, together with the tertiary carbon atom (*C) to which Ra01 is bonded; and when Ra01 is an alkyl group, Ra02 is a group in which an aliphatic cyclic group containing an electron-withdrawing group forms a condensed ring together with an aromatic heterocyclic group containing an oxygen atom or a sulfur atom.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: February 2, 2021
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Masatoshi Arai, Takuya Ikeda, Koshi Onishi
  • 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