Patents by Inventor Yoko Kosugi

Yoko Kosugi 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: 11951193
    Abstract: A monomer composition for a dental material including a compound represented by Formula (1). In Formula (1), X represents an n-valent organic group having from 1 to 200 carbon atoms and containing at least one selected from the group consisting of an oxygen atom and a nitrogen atom, in which the at least one selected from the group consisting of an oxygen atom and a nitrogen atom is bound to Y; and each Y represents a (meth)acryloyl group-containing group (Y1) represented by the following Formula (A), a (meth)acryloyl group (Y2), a hydrogen atom, or a hydrocarbon group having from 1 to 20 carbon atoms, with the proviso that at least one or more Y, among all Ys included in the compound represented by Formula (1), is the (meth)acryloyl group-containing group (Y1).
    Type: Grant
    Filed: December 24, 2019
    Date of Patent: April 9, 2024
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Takenori Mitamura, Yoko Kosugi
  • Publication number: 20230363982
    Abstract: Dental coating compositions that have one or more of excellent properties including plaque resistance, microbial plaque resistance, strong adhesion, excellent hardness, high wear resistance, and high color resistance are provided. Dental appliance or natural tooth covered by the dental coating compositions, and production methods of the dental coating compositions are also provided. The coating compositions include one or more of a trifunctional or higher multifunctional (meth)acrylate monomer, an inorganic filler, a photoinitiator, and an organic solvent. The coating compositions are substantially free from antibacterial chemical additives.
    Type: Application
    Filed: September 15, 2021
    Publication date: November 16, 2023
    Inventors: Hideyuki ITO, Yoko KOSUGI, James Myoungsouk JANG, Ren-Zhi JIN, Sapna BLACKBURN, Klaus RUPPERT, Andreas GRUNDLER, Andrea HAMBACH
  • Patent number: 11786444
    Abstract: Provided are monomers useful for dental materials that include a compound in which a core and a specific terminal group are bonded to each other directly or via a linking group, wherein the core is a C1-200 polyvalent organic group having a valence of not less than 3 containing an oxygen atom or a nitrogen atom in which an atom bonded to the terminal group or the linking group is the oxygen atom or the nitrogen atom; the terminal group is a specific (meth)acryloyl group-containing group, a (meth)acryloyl group, a C1-20 hydrocarbon group or a hydrogen atom, and the terminal group needs to meet specific requirements; and the linking group is a specific divalent group, and when the compound contains a plurality of linking groups, the linking groups may be the same as or different from each other. Compositions, dental materials and kits are also provided.
    Type: Grant
    Filed: August 23, 2021
    Date of Patent: October 17, 2023
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Yoko Kosugi, Akiko Matsumoto, Kazuhiko Yoshinaga
  • Publication number: 20230323084
    Abstract: Provided is a polymerization initiator, which has an excellent curing rate and is an alternative to a polymerization initiator system using a benzoyl peroxide-aromatic amine compound, a curable composition containing the polymerization initiator, a dental material and dental filler material containing the composition, and a kit for preparing the curable composition. The polymerization initiator contains one or more compounds (A) selected from the group consisting of a pyrazolidinedione compound and/or pyrazolidine(di)thione compound (A1), a salt (A2) of the compound (A1), and a malonate compound (A3).
    Type: Application
    Filed: June 16, 2023
    Publication date: October 12, 2023
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Takenori MITAMURA, Yoko KOSUGI
  • Patent number: 11744782
    Abstract: Provided is a curable composition that has a sufficient pot life and does not cause a significant delay in curing time even after long-term storage at room temperature or higher. A separately packed curable composition includes: (A) a first pack containing: (a1) a polymerizable monomer having no acidic group, (b) a polymerizable monomer having an acidic group, and (c) a transition metal compound; and (B) a second pack containing: (a2) a polymerizable monomer having no acidic group, (d) an aromatic amine compound, and (e) at least one compound selected from sulfinic acid and a salt thereof.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: September 5, 2023
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Takenori Mitamura, Yoko Kosugi
  • Patent number: 11406571
    Abstract: Provided are monomers useful for dental materials that include a compound in which a core and a specific terminal group are bonded to each other directly or via a linking group, wherein the core is a C1-200 polyvalent organic group having a valence of not less than 3 containing an oxygen atom or a nitrogen atom in which an atom bonded to the terminal group or the linking group is the oxygen atom or the nitrogen atom; the terminal group is a specific (meth)acryloyl group-containing group, a (meth)acryloyl group, a C1-20 hydrocarbon group or a hydrogen atom, and the terminal group needs to meet specific requirements; and the linking group is a specific divalent group, and when the compound contains a plurality of linking groups, the linking groups may be the same as or different from each other. Compositions, dental materials and kits are also provided.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: August 9, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Yoko Kosugi, Akiko Matsumoto, Kazuhiko Yoshinaga
  • Patent number: 11311462
    Abstract: Provided are adhesive monomers for dental materials including compounds represented by the general formula (1) below, in which the core (X) and the terminal group (Y1) are bonded to each other directly or via the linking group (Z): X(Y1)n1a(Z—Y1)n1b(1) wherein n1a represents the number of terminal groups (Y1) directly bonded to the core (X), n1b represents the number of terminal groups (Y1) bonded to the core (X) via the linking group (Z), and the sum of n1a and n1b is equal to the valence of the core (X); the core (X), the linking group (Z) and the terminal group (Y1) are further defined. The adhesive monomers can enhance adhesive strength to the tooth in dental treatment, and impart high mechanical strength to cured products.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: April 26, 2022
    Assignees: MITSUI CHEMICALS, INC., KULZER GMBH
    Inventors: Yoko Kosugi, Akiko Matsumoto, Kazuhiko Yoshinaga, Michael Gerlach, Maria Lechmann-Dorn, Jutta Schneider, Andreas Utterodt
  • Patent number: 11306160
    Abstract: An object of the present invention is to provide a curable composition having sufficient polymerization properties even under acidic conditions. The curable composition of the present invention includes (a) a polymerizable monomer having an acidic group, (b) a transition metal compound, (c) at least one compound selected from benzoxazole compounds and benzothiazole compounds, and (d) a reducing agent.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: April 19, 2022
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Takenori Mitamura, Yoko Kosugi
  • Publication number: 20210378919
    Abstract: Provided are monomers useful for dental materials that include a compound in which a core and a specific terminal group are bonded to each other directly or via a linking group, wherein the core is a C1-200 polyvalent organic group having a valence of not less than 3 containing an oxygen atom or a nitrogen atom in which an atom bonded to the terminal group or the linking group is the oxygen atom or the nitrogen atom; the terminal group is a specific (meth)acryloyl group-containing group, a (meth)acryloyl group, a C1-20 hydrocarbon group or a hydrogen atom, and the terminal group needs to meet specific requirements; and the linking group is a specific divalent group, and when the compound contains a plurality of linking groups, the linking groups may be the same as or different from each other. Compositions, dental materials and kits are also provided.
    Type: Application
    Filed: August 23, 2021
    Publication date: December 9, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Yoko KOSUGI, Akiko MATSUMOTO, Kazuhiko YOSHINAGA
  • Publication number: 20210338537
    Abstract: A monomer composition for a dental material including a compound represented by Formula (1). In Formula (1), X represents an n-valent organic group having from 1 to 200 carbon atoms and containing at least one selected from the group consisting of an oxygen atom and a nitrogen atom, in which the at least one selected from the group consisting of an oxygen atom and a nitrogen atom is bound to Y; and each Y represents a (meth)acryloyl group-containing group (Y1) represented by the following Formula (A), a (meth)acryloyl group (Y2), a hydrogen atom, or a hydrocarbon group having from 1 to 20 carbon atoms, with the proviso that at least one or more Y, among all Ys included in the compound represented by Formula (1), is the (meth)acryloyl group-containing group (Y1).
    Type: Application
    Filed: December 24, 2019
    Publication date: November 4, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Takenori MITAMURA, Yoko KOSUGI
  • Publication number: 20210169749
    Abstract: Provided is a curable composition that has a sufficient pot life and does not cause a significant delay in curing time even after long-term storage at room temperature or higher. A separately packed curable composition includes: (A) a first pack containing: (a1) a polymerizable monomer having no acidic group, (b) a polymerizable monomer having an acidic group, and (c) a transition metal compound; and (B) a second pack containing: (a2) a polymerizable monomer having no acidic group, (d) an aromatic amine compound, and (e) at least one compound selected from sulfinic acid and a salt thereof.
    Type: Application
    Filed: August 7, 2018
    Publication date: June 10, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Takenori MITAMURA, Yoko KOSUGI
  • Publication number: 20210161771
    Abstract: Provided are monomers useful for dental materials that include a compound in which a core and a specific terminal group are bonded to each other directly or via a linking group, wherein the core is a C1-200 polyvalent organic group having a valence of not less than 3 containing an oxygen atom or a nitrogen atom in which an atom bonded to the terminal group or the linking group is the oxygen atom or the nitrogen atom; the terminal group is a specific (meth)acryloyl group-containing group, a (meth)acryloyl group, a C1-20 hydrocarbon group or a hydrogen atom, and the terminal group needs to meet specific requirements; and the linking group is a specific divalent group, and when the compound contains a plurality of linking groups, the linking groups may be the same as or different from each other. Compositions, dental materials and kits are also provided.
    Type: Application
    Filed: February 3, 2021
    Publication date: June 3, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Yoko KOSUGI, Akiko MATSUMOTO, Kazuhiko YOSHINAGA
  • Publication number: 20210130580
    Abstract: Provided is a polymerization initiator, which has an excellent curing rate and is an alternative to a polymerization initiator system using a benzoyl peroxide-aromatic amine compound, a curable composition containing the polymerization initiator, a dental material and dental filler material containing the composition, and a kit for preparing the curable composition. The polymerization initiator contains one or more compounds (A) selected from the group consisting of a pyrazolidinedione compound and/or pyrazolidine(di)thione compound (A1), a salt (A2) of the compound (A1), and a malonate compound (A3).
    Type: Application
    Filed: August 2, 2019
    Publication date: May 6, 2021
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Takenori MITAMURA, Yoko KOSUGI
  • Publication number: 20200291157
    Abstract: An object of the present invention is to provide a curable composition having sufficient polymerization properties even under acidic conditions. The curable composition of the present invention includes (a) a polymerizable monomer having an acidic group, (b) a transition metal compound, (c) at least one compound selected from benzoxazole compounds and benzothiazole compounds, and (d) a reducing agent.
    Type: Application
    Filed: October 25, 2018
    Publication date: September 17, 2020
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Takenori MITAMURA, Yoko KOSUGI
  • Publication number: 20190374441
    Abstract: Provided are adhesive materials which exhibit high adhesive strength, and compounds which can be blended with the adhesive materials. The compounds are represented by the general formula: X(Y1)n1, in which the core (X) and the terminal group (Y1) are bonded to each other, n1 represents the number of terminal groups (Y1) bonded to the core (X), and n1 is equal to the valence of the core (X); the core (X) is a C1-200 polyvalent organic group having a valence of not less than 3 containing an oxygen atom or a nitrogen atom in which an atom bonded to the terminal group (Y1) is the oxygen atom or the nitrogen atom; and the terminal group (Y1) is further defined.
    Type: Application
    Filed: March 29, 2018
    Publication date: December 12, 2019
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Yoko KOSUGI, Akiko MATSUMOTO, Kazuhiko YOSHINAGA
  • Publication number: 20190374440
    Abstract: Provided are adhesive monomers for dental materials including compounds represented by the general formula (1) below, in which the core (X) and the terminal group (Y1) are bonded to each other directly or via the linking group (Z): X(Y1)n1a(Z?Y1)n1b(1) wherein n1a represents the number of terminal groups (Y1) directly bonded to the core (X), n1b represents the number of terminal groups (Y1) bonded to the core (X) via the linking group (Z), and the sum of n1a and n1b is equal to the valence of the core (X); the core (X), the linking group (Z) and the terminal group (Y1) are further defined. The adhesive monomers can enhance adhesive strength to the tooth in dental treatment, and impart high mechanical strength to cured products.
    Type: Application
    Filed: March 29, 2018
    Publication date: December 12, 2019
    Applicants: Mitsui Chemicals, Inc., KULZER GMBH
    Inventors: Yoko KOSUGI, Akiko MATSUMOTO, Kazuhiko YOSHINAGA, Michael GERLACH, Maria LECHMANN-DORN, Jutta SCHNEIDER, Andreas UTTERODT
  • Publication number: 20190365610
    Abstract: Provided are monomers useful for dental materials that include a compound in which a core and a specific terminal group are bonded to each other directly or via a linking group, wherein the core is a C1-200 polyvalent organic group having a valence of not less than 3 containing an oxygen atom or a nitrogen atom in which an atom bonded to the terminal group or the linking group is the oxygen atom or the nitrogen atom; the terminal group is a specific (meth)acryloyl group-containing group, a (meth)acryloyl group, a C1-20 hydrocarbon group or a hydrogen atom, and the terminal group needs to meet specific requirements; and the linking group is a specific divalent group, and when the compound contains a plurality of linking groups, the linking groups may be the same as or different from each other. Compositions, dental materials and kits are also provided.
    Type: Application
    Filed: March 29, 2018
    Publication date: December 5, 2019
    Applicant: Mitsui Chemicals, Inc.
    Inventors: Yoko KOSUGI, Akiko MATSUMOTO, Kazuhiko YOSHINAGA
  • Patent number: 9969827
    Abstract: A process capable of producing an ethylene/?-olefin copolymer having a high molecular weight even under the conditions of a high polymerization temperature is provided. The process for producing an ethylene/?-olefin copolymer includes copolymerizing ethylene and an ?-olefin having 3 or more carbon atoms in the presence of an olefin polymerization catalyst including a crosslinked metallocene compound (A) represented by the following general formula [I] and a cocatalyst component (B). In the general formula [I], Y is selected from a carbon atom, etc., M is a hafnium atom or the like, R1 to R12 are each selected from a hydrogen atom, a hydrocarbon group, etc., R13 and R14 are each a substituted aryl group or the like, at least one of R13 and R14 is a substituted aryl group having one or more electron-donating substituents having a Hammett substituent constant ? of not more than ?0.2, Q is selected from a halogen atom, etc., and j is an integer of 1 to 4.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: May 15, 2018
    Assignee: MITSUI CHEMICALS, INC.
    Inventors: Koji Endo, Mayumi Hiwara, Sadahiko Matsuura, Yoko Kosugi, Yuichi Yamamura, Yusuke Mizobuchi
  • Publication number: 20170183432
    Abstract: A process capable of producing an ethylene/?-olefin copolymer having a high molecular weight even under the conditions of a high polymerization temperature is provided. The process for producing an ethylene/?-olefin copolymer includes copolymerizing ethylene and an ?-olefin having 3 or more carbon atoms in the presence of an olefin polymerization catalyst including a crosslinked metallocene compound (A) represented by the following general formula [I] and a cocatalyst component (B). In the general formula [I], Y is selected from a carbon atom, etc., M is a hafnium atom or the like, R1 to R12 are each selected from a hydrogen atom, a hydrocarbon group, etc., R13 and R14 are each a substituted aryl group or the like, at least one of R13 and R14 is a substituted aryl group having one or more electron-donating substituents having a Hammett substituent constant ? of not more than ?0.2, Q is selected from a halogen atom, etc., and j is an integer of 1 to 4.
    Type: Application
    Filed: February 10, 2015
    Publication date: June 29, 2017
    Applicant: MITSUI CHEMICALS, INC.
    Inventors: Koji ENDO, Mayumi HIWARA, Sadahiko MATSUURA, Yoko KOSUGI, Yuichi YAMAMURA, Yusuke MIZOBUCHI
  • Patent number: 5358850
    Abstract: The present invention relates to a process of preparing a sandwich immunoassay of NAG, which comprises (1) reacting NAG with an immobilized anti-NAG monoclonal antibody and a labeled anti-NAG monoclonal antibody to form a complex of immobilized antibody-NAG-labeled antibody and (2) detecting the activity of said reacted and unreacted labeled anti-NAG antibody.This sandwich immunoassay is useful for diagnosis of renal disease, hepatitis, leukemia, and other such diseases. It also allows the direct and specific detection of NAG isozymes B and I in urine and blood.
    Type: Grant
    Filed: June 18, 1993
    Date of Patent: October 25, 1994
    Assignee: Shionogi Seiyaku Kabushiki Kaisha
    Inventors: Yoshito Numata, Yoko Kosugi, Kazunori Shibata