Patents by Inventor Kiwamu TERADA

Kiwamu TERADA 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: 11905361
    Abstract: This base proliferating agent is represented by formula (1) or (2), where, in formula (1) and (2), R1, R2, and R3 independently represent a hydrogen atom or a substituent and n independently represents an integer from 1 to 4. A base-reactive resin composition can include this base proliferating agent and a base-reactive compound.
    Type: Grant
    Filed: June 28, 2022
    Date of Patent: February 20, 2024
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kiwamu Terada, Hirokazu Kuwabara
  • Patent number: 11608316
    Abstract: This compound which has excellent solvent solubility and compatibility with a resin, and which can generate bases and radicals with high efficiency by being irradiated with active energy rays, is represented by formula (1), where, in formula (1), R1, R2, R3, R5 and R6 represent a hydroxy group or an alkoxy group; the R4's independently represent an organic group containing a thioether bond; R7 and R9 independently represent a hydrogen atom or an alkyl group with 1 to 4 carbons; R8 represents an alkylene group or an arylene group; and X represents an oxygen atom or a sulfur atom. A photopolymerization initiator can include said novel compound; and a photosensitive resin composition can include said photopolymerization initiator, from which a cured product can be obtained that has high sensitivity and no metal corrosion.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: March 21, 2023
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kiwamu Terada, Hirokazu Kuwabara
  • Publication number: 20220332886
    Abstract: This base proliferating agent is represented by formula (1) or (2), where, in formula (1) and (2), R1, R2, and R3 independently represent a hydrogen atom or a substituent and n independently represents an integer from 1 to 4. A base-reactive resin composition can include this base proliferating agent and a base-reactive compound.
    Type: Application
    Filed: June 28, 2022
    Publication date: October 20, 2022
    Inventors: Kiwamu Terada, Hirokazu Kuwabara
  • Patent number: 11414382
    Abstract: This compound, which absorbs long-wavelength active energy rays and generates with high-efficiency radicals and strong bases, and which has excellent reaction efficiency in a base generating chain reaction, is represented by formula (1), where, in formula (1), R1, R2, R3, R5 and R6 independently represent a hydroxy group, an alkoxy group, or an organic group other than those substituents, the R4's independently represent an organic group including a thioether bond, and ‘A’ represents a substituent represented by formula (1-1) or (1-2), where, in formula (1-1), R7 and R8 independently represent a hydrogen atom, an alkyl group or a heterocyclic group, and where, in formula (1-2), R9 and R10 independently represent an amino group or a substituted amino group. A photopolymerization initiator can include said compound; and a photosensitive resin composition can include said photopolymerization initiator.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: August 16, 2022
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kiwamu Terada, Hirokazu Kuwabara
  • Patent number: 11401370
    Abstract: This base proliferating agent is represented by formula (1) or (2), where, in formula (1) and (2), R1, R2, and R3 independently represent a hydrogen atom or a substituent and n independently represents an integer from 1 to 4. A base-reactive resin composition can include this base proliferating agent and a base-reactive compound.
    Type: Grant
    Filed: February 25, 2019
    Date of Patent: August 2, 2022
    Assignee: Nippon Kayaku Kabushiki Kaisha
    Inventors: Kiwamu Terada, Hirokazu Kuwabara
  • Publication number: 20210292472
    Abstract: A novel compound which absorbs long-wavelength active energy rays and generates with high-efficiency radicals and strong bases, and which has excellent reaction efficiency in a base generating chain reaction; a photopolymerization initiator which contains said compound; and a photosensitive resin composition which contains said photopolymerization initiator are provided, where the novel compound is represented by formula (1), where, in formula (1), R1, R2, R3, R5 and R6 independently represent a hydroxyl group, an alkoxy group, or an organic group other than those substituents, the R4's independently represent an organic group including a thioether bond, ‘A’ represents a substituent represented by formula (1-1) or (1-2), where, in formula (1-1), R7 and R8 independently represent a hydrogen atom, an alkyl group or a heterocyclic group, and where, in formula (1-2), R9 and R10 independently represent an amino group or a substituted amino group.
    Type: Application
    Filed: July 2, 2019
    Publication date: September 23, 2021
    Inventors: Kiwamu Terada, Hirokazu Kuwabara
  • Publication number: 20210002216
    Abstract: This compound, which absorbs long-wavelength active energy rays and generates with high-efficiency radicals and strong bases, and which has excellent reaction efficiency in a base generating chain reaction, is represented by formula (1), where, in formula (1), R1, R2, R3, R5 and R6 independently represent a hydroxy group, an alkoxy group, or an organic group other than those substituents, the R4's independently represent an organic group including a thioether bond, and ‘A’ represents a substituent represented by formula (1-1) or (1-2), where, in formula (1-1), R7 and R8 independently represent a hydrogen atom, an alkyl group or a heterocyclic group, and where, in formula (1-2), R9 and R10 independently represent an amino group or a substituted amino group. A photopolymerization initiator can include said compound; and a photosensitive resin composition can include said photopolymerization initiator.
    Type: Application
    Filed: February 28, 2019
    Publication date: January 7, 2021
    Inventors: Kiwamu Terada, Hirokazu Kuwabara
  • Publication number: 20200407487
    Abstract: This base proliferating agent is represented by formula (1) or (2), where, in formulae (1) and (2), R1, R2, and R3 independently represent a hydrogen atom or a substituent and n independently represents an integer from 1 to 4. A base-reactive resin composition can include this base proliferating agent and a base-reactive compound.
    Type: Application
    Filed: February 25, 2019
    Publication date: December 31, 2020
    Inventors: Kiwamu Terada, Hirokazu Kuwabara
  • Publication number: 20200392079
    Abstract: This compound which has excellent solvent solubility and compatibility with a resin, and which can generate bases and radicals with high efficiency by being irradiated with active energy rays, is represented by formula (1), where, in formula (1), R1, R2, R3, R5 and R6 represent a hydroxy group or an alkoxy group; the R4's independently represent an organic group containing a thioether bond; R7 and R9 independently represent a hydrogen atom or an alkyl group with 1 to 4 carbons; R8 represents an alkylene group or an arylene group; and X represents an oxygen atom or a sulfur atom. A photopolymerization initiator can include said novel compound; and a photosensitive resin composition can include said photopolymerization initiator, from which a cured product can be obtained that has high sensitivity and no metal corrosion.
    Type: Application
    Filed: February 28, 2019
    Publication date: December 17, 2020
    Inventors: Kiwamu Terada, Hirokazu Kuwabara
  • Patent number: 10508078
    Abstract: The purpose of the present invention is to provide: a novel compound which can generate a base and radical upon the irradiation with an active energy ray; a photopolymerization initiator which comprises the novel compound; and a photosensitive resin composition which contains the photopolymerization initiator, has high sensitivity and excellent storage stability, and can be formed into a cured article that does not have a metal-corrosive property. The novel compound is represented by formula (1): (wherein R1 to R6 independently represent a hydrogen atom, a hydroxy group, an alkoxy group, an organic group other than the aforementioned substituents, or the like; X represents a residue having a structure such that n hydrogen atoms are removed from a saturated hydrocarbon containing a ring structure; and n represents an integer of 1 to 6).
    Type: Grant
    Filed: December 7, 2016
    Date of Patent: December 17, 2019
    Assignees: TOKYO UNIVERSITY OF SCIENCE FOUNDATION, NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Kiwamu Terada, Kazuyoshi Yamamoto, Koji Arimitsu
  • Patent number: 10197913
    Abstract: Provided is a photosensitive resin composition that contains (A) a photobase generator and (B) an alkali-soluble epoxy compound, wherein the photobase generator (A) contains a compound represented by formula (2-1): and the alkali-soluble epoxy compound (B) is an epoxy compound obtained by reacting (c) a polybasic acid anhydride with a product of a reaction between (a) an epoxy compound having two or more epoxy groups in the molecule and (b) a compound having one or more hydroxyl groups and one carboxyl group in the molecule.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: February 5, 2019
    Assignees: TOKYO UNIVERSITY OF SCIENCE FOUNDATION, NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Koji Arimitsu, Kiwamu Terada
  • Publication number: 20180370908
    Abstract: The purpose of the present invention is to provide: a novel compound which can generate a base and radical upon the irradiation with an active energy ray; a photopolymerization initiator which comprises the novel compound; and a photosensitive resin composition which contains the photopolymerization initiator, has high sensitivity and excellent storage stability, and can be formed into a cured article that does not have a metal-corrosive property. The novel compound is represented by formula (1): (wherein R1 to R6 independently represent a hydrogen atom, a hydroxy group, an alkoxy group, an organic group other than the aforementioned substituents, or the like; X represents a residue having a structure such that n hydrogen atoms are removed from a saturated hydrocarbon containing a ring structure; and n represents an integer of 1 to 6).
    Type: Application
    Filed: December 7, 2016
    Publication date: December 27, 2018
    Applicants: TOKYO UNIVERSITY OF SCIENCE FOUNDATION, NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Kiwamu TERADA, Kazuyoshi YAMAMOTO, Koji ARIMITSU
  • Publication number: 20170293225
    Abstract: Provided is a photosensitive resin composition that contains (A) a photobase generator and (B) an alkali-soluble epoxy compound, wherein the photobase generator (A) contains a compound represented by formula (2-1) and the alkali-soluble in epoxy compound (B) is an epoxy compound obtained by reacting (c) a polybasic acid anhydride with a product of a reaction between (a) an epoxy compound having two or more epoxy groups in the molecule and (b) a compound having one or more by hydroxyl groups and one carboxyl group in the molecule.
    Type: Application
    Filed: September 29, 2015
    Publication date: October 12, 2017
    Applicants: Tokyo University of Science Foundation, NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Koji ARIMITSU, Kiwamu TERADA