Patents by Inventor Kouji Suesugi

Kouji Suesugi 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: 12064908
    Abstract: An injection molding apparatus includes a substantially circular first substrate, a substantially circular second substrate disposed to face a surface of the first substrate, a fixing member which fixes a peripheral end portion of the first substrate and a peripheral end portion of the second substrate, and an injection portion which is provided in the fixing member and from which a composition is injected into a gap between the first substrate and the second substrate, in which a space connecting with the injection portion and the gap is provided in at least a part of a periphery of the gap, and a width of the space in a thickness direction is larger than a width of the gap in the thickness direction.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: August 20, 2024
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Masaru Kawaguchi, Shinsuke Ito, Kouji Suesugi
  • Publication number: 20240100789
    Abstract: A method for manufacturing a photochromic lens includes: a step of injecting a polymerizable composition through an injection part in an injection molding apparatus and filling a gap with the polymerizable composition through a space; a step of heating the filled polymerizable composition to be polymerized and cured and forming a photochromic layer on a resin substrate; and a step of taking out a resulting laminate composed of the resin substrate and the photochromic layer, in which the polymerizable composition includes an isocyanate compound, a thiol compound, a polyol compound, and a photochromic compound.
    Type: Application
    Filed: March 3, 2022
    Publication date: March 28, 2024
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Yuuki KASORI, Shinsuke ITO, Kouji SUESUGI
  • Patent number: 11845828
    Abstract: A polymerizable composition for an optical material of the present invention includes (A) a compound of which pKa value is 1 to 9, (B) a di- or higher functional iso(thio)cyanate compound, and (C) a di- or higher functional active hydrogen compound.
    Type: Grant
    Filed: October 31, 2017
    Date of Patent: December 19, 2023
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Shinsuke Ito, Masayuki Furuya, Kouji Suesugi, Takeshi Nishimura, Mamoru Tanaka
  • Patent number: 11795261
    Abstract: A polymerizable composition for an optical material containing two or more different monomers for an optical material, and a polymerization catalyst, in which at least one of the two or more different monomers for an optical material is an isocyanate compound containing an aromatic ring, a content of the polymerization catalyst with respect to a total of 100 parts by mass of the two or more different monomers for an optical material is from 0.010 parts by mass to 0.50 parts by mass, and the viscosity measured by a B-type viscometer at 25° C. and 60 rpm is from 10 mPa·s to 1,000 mPa·s.
    Type: Grant
    Filed: October 11, 2022
    Date of Patent: October 24, 2023
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kouji Suesugi, Shinsuke Ito, Shotaro Nakano, Yusuke Matsui
  • Publication number: 20230111506
    Abstract: A polymerizable composition for optical material including two or more different monomers for optical material and a polymerization catalyst, in which the content of the polymerization catalyst relative to the total amount of the monomers for optical material is from 0.1150 to 0.2000 parts by mass, the viscosity of the polymerizable composition for optical material is from 10 mPa·s to 1000 mPa·s as measured with a B-type viscometer at 20° C. and 60 rpm, and at least one of the two or more different monomers for optical material is an episulfide compound.
    Type: Application
    Filed: March 10, 2021
    Publication date: April 13, 2023
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kouji SUESUGI, Shinsuke ITO, Yusuke MATSUI
  • Publication number: 20230048290
    Abstract: A polymerizable composition for an optical material containing two or more different monomers for an optical material, and a polymerization catalyst, in which at least one of the two or more different monomers for an optical material is an isocyanate compound containing an aromatic ring, a content of the polymerization catalyst with respect to a total of 100 parts by mass of the two or more different monomers for an optical material is from 0.010 parts by mass to 0.50 parts by mass, and the viscosity measured by a B-type viscometer at 25° C. and 60 rpm is from 10 mPa·s to 1,000 mPa·s.
    Type: Application
    Filed: October 11, 2022
    Publication date: February 16, 2023
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kouji SUESUGI, Shinsuke ITO, Shotaro NAKANO, Yusuke MATSUI
  • Publication number: 20230051738
    Abstract: A polymerizable composition for an optical material containing two or more different monomers for an optical material, and a polymerization catalyst, in which at least one of the two or more different monomers for an optical material is an isocyanate compound containing no aromatic rings, a content of the polymerization catalyst with respect to a total of 100 parts by mass of the two or more different monomers for an optical material is from more than 0.05 parts by mass to 2.0 parts by mass, and a viscosity measured by a B-type viscometer at 25° C. and 60 rpm is from 10 mPa·s to 1,000 mPa·s.
    Type: Application
    Filed: October 11, 2022
    Publication date: February 16, 2023
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kouji SUESUGI, Shinsuke ITO, Shotaro NAKANO, Yusuke MATSUI
  • Patent number: 11542357
    Abstract: A polymerizable composition for an optical material containing two or more different monomers for an optical material, and a polymerization catalyst, in which at least one of the two or more different monomers for an optical material is an isocyanate compound containing no aromatic rings, a content of the polymerization catalyst with respect to a total of 100 parts by mass of the two or more different monomers for an optical material is from more than 0.05 parts by mass to 2.0 parts by mass, and a viscosity measured by a B-type viscometer at 25° C. and 60 rpm is from 10 mPa·s to 1,000 mPa·s.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: January 3, 2023
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kouji Suesugi, Shinsuke Ito, Shotaro Nakano, Yusuke Matsui
  • Publication number: 20220363805
    Abstract: A polythiol composition includes a polythiol compound (A) including at least one of 4,8-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, 4,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, or 5,7-dimercaptomethyl-1,11-dimercapto-3,6,9-trithiaundecane, and a polythiol compound (B) that is 4-mercaptomethyl-1,8-dimercapto-3,6-dithiaoctane.
    Type: Application
    Filed: July 14, 2020
    Publication date: November 17, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Takeshi NISHIMURA, Masayuki FURUYA, Kouji SUESUGI
  • Patent number: 11499000
    Abstract: A polymerizable composition for an optical material containing two or more different monomers for an optical material, and a polymerization catalyst, in which at least one of the two or more different monomers for an optical material is an isocyanate compound containing an aromatic ring, a content of the polymerization catalyst with respect to a total of 100 parts by mass of the two or more different monomers for an optical material is from 0.010 parts by mass to 0.50 parts by mass, and the viscosity measured by a B-type viscometer at 25° C. and 60 rpm is from 10 mPa·s to 1,000 mPa·s.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: November 15, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kouji Suesugi, Shinsuke Ito, Shotaro Nakano, Yusuke Matsui
  • Patent number: 11472943
    Abstract: A polymerizable composition for an optical material includes a compound represented by General Formula (1) and a polymerization reactive compound.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: October 18, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Shinsuke Ito, Kouji Suesugi
  • Publication number: 20220219361
    Abstract: An injection molding apparatus includes a substantially circular first substrate, a substantially circular second substrate disposed to face a surface of the first substrate, a fixing member which fixes a peripheral end portion of the first substrate and a peripheral end portion of the second substrate, and an injection portion which is provided in the fixing member and from which a composition is injected into a gap between the first substrate and the second substrate, in which a space connecting with the injection portion and the gap is provided in at least a part of a periphery of the gap, and a width of the space in a thickness direction is larger than a width of the gap in the thickness direction.
    Type: Application
    Filed: May 15, 2020
    Publication date: July 14, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Masaru KAWAGUCHI, Shinsuke ITO, Kouji SUESUGI
  • Publication number: 20220197063
    Abstract: In an optical material, a transmittance curve satisfies the following characteristics (1) and (2) and a hue in the CIE 1976 (L*, a*, b*) color space satisfies the following characteristic (3), (1) the transmittance curve has a maximum value of a transmittance at a wavelength of from 400 nm to 450 nm or from 520 nm to 570 nm, and a largest value of the transmittance at the wavelength of from 400 nm to 450 nm and a transmittance at from 520 nm to 570 nm are 50% or more, (2) the transmittance curve has a minimum value of a transmittance at a wavelength of from 470 nm to 500 nm, and the minimum value is 40% or less, and (3) in the hue in the CIE 1976 (L*, a*, b*) color space, a* is from 2.5 to 5.5 and b* is from 5 to 25.
    Type: Application
    Filed: April 17, 2020
    Publication date: June 23, 2022
    Applicants: MITSUI CHEMICALS, INC., ITOH OPTICAL INDUSTRIAL CO., LTD.
    Inventors: Yusuke MATSUI, Kouji SUESUGI, Shinsuke ITO, Hirofumi ODA
  • Patent number: 11358354
    Abstract: A process for producing a plastic lens includes a step of stirring and mixing a solution including a polymerization reactive compound in a preparation tank; a step of transferring the polymerizable composition obtained in the step from the preparation tank to a lens casting mold; a step of curing the polymerizable composition; and a step of obtaining a plastic lens molded product by separating the obtained resin from the lens casting mold. The step of transferring the polymerizable composition includes a step of re-mixing the polymerizable composition discharged from the preparation tank and injecting the polymerizable composition into the lens casting mold.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: June 14, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Shinsuke Ito, Kouji Suesugi, Masayuki Furuya, Takeshi Nishimura, Mamoru Tanaka
  • Publication number: 20220041788
    Abstract: A polymerizable composition for an optical material containing two or more different monomers for an optical material, and a polymerization catalyst, in which at least one of the two or more different monomers for an optical material is an isocyanate compound containing an aromatic ring, a content of the polymerization catalyst with respect to a total of 100 parts by mass of the two or more different monomers for an optical material is from 0.010 parts by mass to 0.50 parts by mass, and the viscosity measured by a B-type viscometer at 25° C. and 60 rpm is from 10 mPa·s to 1,000 mPa·s.
    Type: Application
    Filed: January 27, 2021
    Publication date: February 10, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kouji SUESUGI, Shinsuke ITO, Shotaro NAKANO, Yusuke MATSUI
  • Publication number: 20220041789
    Abstract: A polymerizable composition for an optical material containing two or more different monomers for an optical material, and a polymerization catalyst, in which at least one of the two or more different monomers for an optical material is an isocyanate compound containing no aromatic rings, a content of the polymerization catalyst with respect to a total of 100 parts by mass of the two or more different monomers for an optical material is from more than 0.05 parts by mass to 2.0 parts by mass, and a viscosity measured by a B-type viscometer at 25° C. and 60 rpm is from 10 mPa·s to 1,000 mPa·s.
    Type: Application
    Filed: January 27, 2021
    Publication date: February 10, 2022
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Kouji SUESUGI, Shinsuke ITO, Shotaro NAKANO, Yusuke MATSUI
  • Patent number: 10723832
    Abstract: There is provided a polymerizable composition for an optical material including a polyether-modified compound having a polyether group represented by General Formula (4) below, and a polymerization reactive compound. (In General Formula (4), R25 represents a linear or branched alkylene group having 1 to 20 carbon atoms, R26 represents a hydrogen atom, a linear or branched alkyl group having 1 to 20 carbon atoms, a linear or branched alkenyl group having 2 to 20 carbon atoms, or a linear or branched alkynyl group having 2 to 20 carbon atoms, a plurality of present R25's may be the same or different, and k is an integer equal to or more than 1.
    Type: Grant
    Filed: February 2, 2016
    Date of Patent: July 28, 2020
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Shinsuke Ito, Kouji Suesugi, Takeshi Nishimura, Kouju Okazaki, Mamoru Tanaka
  • Publication number: 20200207947
    Abstract: A polymerizable composition for an optical material includes a compound represented by General Formula (1) and a polymerization reactive compound.
    Type: Application
    Filed: July 25, 2018
    Publication date: July 2, 2020
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Shinsuke ITO, Kouji SUESUGI
  • Patent number: 10519060
    Abstract: A process for producing a polymerizable composition for an optical material of the present invention includes a step of mixing (A) at least one kind of thiol compound having at least two mercapto groups, (B) a tin compound represented by general formula (1), and (C) at least one kind of isocyanate compound having at least two isocyanato groups, in which the polymerizable composition for an optical material obtained in the above step has a haze value of 0.05 or less.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: December 31, 2019
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Kouji Suesugi, Naoki Shinohara, Koju Okazaki
  • Publication number: 20190248949
    Abstract: A polymerizable composition for an optical material of the present invention includes (A) a compound of which pKa value is 1 to 9, (B) a di- or higher functional iso(thio)cyanate compound, and (C) a di- or higher functional active hydrogen compound.
    Type: Application
    Filed: October 31, 2017
    Publication date: August 15, 2019
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Shinsuke Ito, Masayuki Furuya, Kouji Suesugi, Takeshi Nishimura, Mamoru Tanaka