Patents by Inventor Kazuhiko KOUMURA

Kazuhiko KOUMURA 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: 20240118612
    Abstract: An embodiment of the present invention relates to a photosensitive resin composition, a method for manufacturing a resist pattern film, and a method for manufacturing a plated shaped article; the photosensitive resin composition comprises (A) an alkali-soluble resin, (B1) a polymerizable compound having at least two (meth)acryloyl groups and at least two hydroxy groups in one molecule and having a ring structure, (C) a photoradical polymerization initiator, (D) at least one compound selected from the group consisting of a nitrogen-containing heterocyclic compound (d1) containing two or more nitrogen atoms, a thiol compound (d2), and a polymerization inhibitor (d3), and (F) a solvent.
    Type: Application
    Filed: September 25, 2023
    Publication date: April 11, 2024
    Applicant: JSR CORPORATION
    Inventors: Keiichi SATOU, Akira Ishii, Takuya Tomita, Kazuhiko Koumura
  • Publication number: 20220146932
    Abstract: The present invention is a photosensitive resin composition including an alkali-soluble resin (A), a polymerizable compound (B), a photoradical polymerization initiator (C), and a solvent (D), in which the polymerizable compound (B) contains at least one kind (B1) selected from a compound represented by the following formula (1) and a compound represented by the following formula (3), having specific Rs, and a content ratio of the compound (B1) contained in the photosensitive resin composition is 15 to 50% by mass. The photosensitive resin composition of the present invention can form a thick-film resist pattern having excellent sensitivity and resolution, and by using the thick-film resist pattern, a plated formed product can be miniaturized.
    Type: Application
    Filed: February 13, 2020
    Publication date: May 12, 2022
    Applicant: JSR CORPORATION
    Inventors: Hiroto NODA, Taku OGAWA, Shuhei HORIKAWA, Kazuhiko KOUMURA
  • Patent number: 9607849
    Abstract: A pattern-forming method includes providing a resist underlayer film on a substrate using a resist underlayer film-forming composition. The resist underlayer film-forming composition includes a first polymer having a glass transition temperature of 0 to 180° C. A silicon-based oxide film is provided on a surface of the resist underlayer film. A resist pattern is provided on a surface of the silicon-based oxide film using a resist composition. The silicon-based oxide film and the resist underlayer film are sequentially dry-etched using the resist pattern as a mask. The substrate is dry-etched using the dry-etched resist underlayer film as a mask.
    Type: Grant
    Filed: April 10, 2014
    Date of Patent: March 28, 2017
    Assignee: JSR CORPORATION
    Inventors: Kazuhiko Koumura, Shinya Minegishi, Takashi Mori, Kyoyu Yasuda, Yoshio Takimoto, Shinya Nakafuji, Toru Kimura
  • Patent number: 9091922
    Abstract: A resin composition for forming a resist underlayer film includes a resin that includes an aromatic ring, and a crosslinking agent having a partial structure represented by a following formula (i). X represents an oxygen atom, a sulfur atom, *—COO— or —NRA—. R1 represents a hydrogen atom or a C1-30 monovalent hydrocarbon group. R2 represents a hydroxy group, a sulfanil group, a cyano group, a nitro group, a C1-30 monovalent hydrocarbon group, a C1-30 monovalent oxyhydrocarbon group or a C1-30 monovalent sulfanilhydrocarbon group. p is an integer of 1 to 3.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: July 28, 2015
    Assignee: JSR CORPORATION
    Inventors: Shin-ya Nakafuji, Satoru Murakami, Kazuhiko Koumura, Yuushi Matsumura, Masayuki Motonari, Katsuhisa Mizoguchi
  • Publication number: 20140220783
    Abstract: A pattern-forming method includes providing a resist underlayer film on a substrate using a resist underlayer film-forming composition. The resist underlayer film-forming composition includes a first polymer having a glass transition temperature of 0 to 180° C. A silicon-based oxide film is provided on a surface of the resist underlayer film. A resist pattern is provided on a surface of the silicon-based oxide film using a resist composition. The silicon-based oxide film and the resist underlayer film are sequentially dry-etched using the resist pattern as a mask. The substrate is dry-etched using the dry-etched resist underlayer film as a mask.
    Type: Application
    Filed: April 10, 2014
    Publication date: August 7, 2014
    Applicant: JSR CORPORATION
    Inventors: Kazuhiko KOUMURA, Shinya MINEGISHI, Takashi MORI, Kyoyu YASUDA, Yoshio TAKIMOTO, Shinya NAKAFUJI, Toru KIMURA
  • Publication number: 20140014620
    Abstract: A resin composition for forming a resist underlayer film includes a resin that includes an aromatic ring, and a crosslinking agent having a partial structure represented by a following formula (i). X represents an oxygen atom, a sulfur atom, *—COO— or —NRA—. R1 represents a hydrogen atom or a C1-30 monovalent hydrocarbon group. R2 represents a hydroxy group, a sulfanil group, a cyano group, a nitro group, a C1-30 monovalent hydrocarbon group, a C1-30 monovalent oxyhydrocarbon group or a C1-30 monovalent sulfanilhydrocarbon group. p is an integer of 1 to 3.
    Type: Application
    Filed: December 14, 2012
    Publication date: January 16, 2014
    Applicant: JSR CORPORATION
    Inventors: Shin-ya NAKAFUJI, Satoru MURAKAMI, Kazuhiko KOUMURA, Yuushi MATSUMURA, Masayuki MOTONARI, Katsuhisa MIZOGUCHI