Patents by Inventor Kosuke YANABA

Kosuke YANABA 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: 11548984
    Abstract: An object of the present invention is to provide a light- or heat-curing method by which a cured product (crosslinked product or resin) can be prepared in a simple method even in a case where filler is contained in a large amount; a curable resin composition which is used in the curing method; and the like.
    Type: Grant
    Filed: June 12, 2018
    Date of Patent: January 10, 2023
    Assignee: FUJIFILM Wako Pure Chemical Corporation
    Inventors: Tadashi Nakano, Nobuhiko Sakai, Kosuke Yanaba, Shigeaki Imazeki
  • Patent number: 10774062
    Abstract: An object of the present invention is to provide a photocuring method, which makes it possible to rapidly and efficiently obtain a crosslinked product (resin), a compound used in the photocuring method, and a photocuring resin composition containing the compound. The present invention relates to a photocuring method, which comprises a step 1 and a step 2 performed after the step 1, a compound used in the photocuring method, and a photocuring resin composition containing the compound. Step 1: this is a step in which in the presence of (A) compound having a carbonyl group generating a radical by photoirradiation and a carboxyl group decarboxylated by photoirradiation, (B) silane coupling agent having a mercapto group or a (meth)acryl group is reacted with (C) water under acidic conditions to obtain (D) silane compound having a mercapto group or a (meth)acryl group and at least one silanol group.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: September 15, 2020
    Assignees: FUJIFILM Wako Pure Chemical Corporation, TOKYO UNIVERSITY OF SCIENCE FOUNDATION
    Inventors: Nobuhiko Sakai, Kosuke Yanaba, Shigeaki Imazeki, Koji Arimitsu
  • Publication number: 20200123324
    Abstract: An object of the present invention is to provide a light- or heat-curing method by which a cured product (crosslinked product or resin) can be prepared in a simple method even in a case where filler is contained in a large amount; a curable resin composition which is used in the curing method; and the like.
    Type: Application
    Filed: June 12, 2018
    Publication date: April 23, 2020
    Inventors: Tadashi NAKANO, Nobuhiko SAKAI, Kosuke YANABA, Shigeaki IMAZEKI
  • Publication number: 20190359561
    Abstract: It is a subject of the present invention to provide a base generator which has high solubility to general-purpose organic solvents, can dissolve directly into a base-reactive compound, such as an epoxy-based compound, further is provided with both performance of high heat resistance and low nucleophilicity, and generates a strong base, a base-reactive composition comprising the base generator and a base-reactive compound, as well as a method for generating a base, etc. The present invention relates to a compound represented by the general formula (A), a base generator comprising the compound, a base-reactive composition which comprises the base generator and a base-reactive compound, as well as a method for generating a base, etc.
    Type: Application
    Filed: August 9, 2019
    Publication date: November 28, 2019
    Inventors: Nobuhiko SAKAI, Kosuke YANABA, Koji ARIMITSU
  • Patent number: 10451967
    Abstract: It is a subject of the present invention to provide an acid- and radical-generating agent which has high sensitivity to an active energy ray having a wavelength of around 300 to 450 nm, and can exert both high acid-generating performance and high radical-generating performance, and has heat resistance; and a method for generating an acid and a radical.
    Type: Grant
    Filed: November 21, 2014
    Date of Patent: October 22, 2019
    Assignee: FUJIFILM Wako Pure Chemical Corporation
    Inventors: Nobuhiko Sakai, Kosuke Yanaba
  • Patent number: 10428014
    Abstract: The present invention relates to a compound represented by the general formula (A), a base generator comprising the compound, a base-reactive composition which comprises the base generator and a base-reactive compound, as well as a method for generating a base, etc.
    Type: Grant
    Filed: June 25, 2014
    Date of Patent: October 1, 2019
    Assignees: FUJIFILM Wako Pure Chemical Corporation, Tokyo University of Science Foundation
    Inventors: Nobuhiko Sakai, Kosuke Yanaba, Koji Arimitsu
  • Patent number: 10428015
    Abstract: The present invention relates to a compound represented by the general formula (A), a base- and/or radical-generating agent comprising the compound, and so on.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: October 1, 2019
    Assignee: FUJIFILM Wako Pure Chemical Corporation
    Inventors: Kosuke Yanaba, Nobuhiko Sakai, Shigeaki Imazeki
  • Publication number: 20190055210
    Abstract: An object of the present invention is to provide a photocuring method, which makes it possible to rapidly and efficiently obtain a crosslinked product (resin), a compound used in the photocuring method, and a photocuring resin composition containing the compound. The present invention relates to a photocuring method, which comprises a step 1 and a step 2 performed after the step 1, a compound used in the photocuring method, and a photocuring resin composition containing the compound. Step 1: this is a step in which in the presence of (A) compound having a carbonyl group generating a radical by photoirradiation and a carboxyl group decarboxylated by photoirradiation, (B) silane coupling agent having a mercapto group or a (meth)acryl group is reacted with (C) water under acidic conditions to obtain (D) silane compound having a mercapto group or a (meth)acryl group and at least one silanol group.
    Type: Application
    Filed: January 25, 2017
    Publication date: February 21, 2019
    Applicant: FUJIFILM Wako Pure Chemical Corporation
    Inventors: Nobuhiko SAKAI, Kosuke YANABA, Shigeaki IMAZEKI, Koji ARIMITSU
  • Publication number: 20190002403
    Abstract: The present invention relates to a compound represented by the general formula (A), a base- and/or radical-generating agent comprising the compound, and so on.
    Type: Application
    Filed: July 22, 2016
    Publication date: January 3, 2019
    Inventors: Kosuke YANABA, Nobuhiko SAKAI, Shigeaki IMAZEKI
  • Patent number: 10100070
    Abstract: A compound capable of providing a composition having high storage stability without reacting with a base-reactive compound, even when stored in a mixed state with the base-reactive compound, as well as capable of generating a strong base by irradiation of light (active energy rays) or heating. A base generator comprises the compound and a base-reactive composition comprises the base generator and the base-reactive compound. The compound is represented by the general formula (A).
    Type: Grant
    Filed: January 22, 2015
    Date of Patent: October 16, 2018
    Assignee: FUJIFILM Wako Pure Chemical Corporation
    Inventors: Nobuhiko Sakai, Kosuke Yanaba
  • Publication number: 20170190818
    Abstract: A colored composition is provided having higher heat resistance as compared with a conventional colored composition using triarylmethane derivative. The present invention relates to a compound represented by the following general formula (1), and a polymer having a monomer unit derived from the compound, and the like. (wherein R1 to R4 each independently represent an alkyl group or the like; R5 to R7 each independently represent a hydrogen atom or a methyl group; n pieces of R8 each independently represent a halogen atom, an alkyl group, an aryl group, a hydroxy group, a nitro group, a sulfo group, an alkoxy group, or the like; and n represents an integer of 0 to 4. A1 represents an alkylene group, or the like; A2 represents —NH— or —O—. An? represents an anion containing an aryl group having an electron-withdrawing substituent, a sulfonyl group having an electron-withdrawing substituent, or a halogenated alkyl group.
    Type: Application
    Filed: May 28, 2015
    Publication date: July 6, 2017
    Applicant: WAKO PURE CHEMICAL INDUSTRIES, LTD.
    Inventors: Tomoaki Horie, Kosuke Yanaba, Yusuke Hishinuma
  • Publication number: 20160342084
    Abstract: It is a subject of the present invention to provide an acid- and radical-generating agent which has high sensitivity to an active energy ray having a wavelength of around 300 to 450 nm, and can exert both high acid-generating performance and high radical-generating performance, and has heat resistance; and a method for generating an acid and a radical.
    Type: Application
    Filed: November 21, 2014
    Publication date: November 24, 2016
    Inventors: Nobuhiko SAKAI, Kosuke YANABA
  • Publication number: 20160340374
    Abstract: An object of the present invention is to provide a compound which is capable of attaining a composition having high storage stability without reacting with a base-reactive compound, even in the case of storage for a long period of time in a mixed state with the base-reactive compound, such as an epoxy-based compound, as well as capable of generating a strong base (guanidines, biguanides, phosphazenes or phosphoniums) by irradiation of light (active energy rays) or heating; a base generator comprising the compound; and a base-reactive composition comprising the base generator and the base-reactive compound. The present invention relates to the compound represented by the general formula (A); the base generator comprising the compound; and the base-reactive composition comprising the base generator and the base-reactive compound.
    Type: Application
    Filed: January 22, 2015
    Publication date: November 24, 2016
    Inventors: Nobuhiko SAKAI, Kosuke YANABA
  • Publication number: 20160122292
    Abstract: It is a subject of the present invention to provide a base generator which has high solubility to general-purpose organic solvents, can dissolve directly into a base-reactive compound, such as an epoxy-based compound, further is provided with both performance of high heat resistance and low nucleophilicity, and generates a strong base, a base-reactive composition comprising the base generator and a base-reactive compound, as well as a method for generating a base, etc. The present invention relates to a compound represented by the general formula (A), a base generator comprising the compound, a base-reactive composition which comprises the base generator and a base-reactive compound, as well as a method for generating a base, etc.
    Type: Application
    Filed: June 25, 2014
    Publication date: May 5, 2016
    Applicant: TOKYO UNIVERSITY OF SCIENCE FOUNDATION
    Inventors: Nobuhiko SAKAI, Kosuke YANABA, Koji ARIMITSU