Patents by Inventor Keishi FUKUDOME

Keishi FUKUDOME 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: 20240122814
    Abstract: [Object] To provide a dental adhesive composition that has high adhesiveness even to a silica ceramic restoration by containing a silane coupling material, can be stably preserved for a long period of time even with presence of both a silica filler and the silane coupling material, and is suitable as dental cement. [Solving Means] A dental adhesive composition includes: 100 parts by mass of a polymerizable monomer component (A) formed of an acidic group-containing polymerizable monomer and an acidic group-free polymerizable monomer; 50 to 1000 parts by mass of a silica filler (B); and 0.
    Type: Application
    Filed: March 31, 2022
    Publication date: April 18, 2024
    Inventors: Tetsuro MORIMOTO, Keishi FUKUDOME
  • Publication number: 20230022464
    Abstract: [Object] To provide a dental adhesive composition that is highly adhesive to both porcelain and a tooth substance, an acid monomer, water, and a silane coupling agent coexisting in the dental adhesive composition, the dental adhesive composition being usable as a one-liquid type adhesive and exhibiting high preservation stability as a one-liquid type adhesive even after long-term preservation, regardless of the type of acid monomer used.
    Type: Application
    Filed: October 29, 2020
    Publication date: January 26, 2023
    Inventors: Akane KATO, Keishi FUKUDOME
  • Patent number: 11325993
    Abstract: Provided are a chemical polymerization initiator including (a) a thiourea compound, (b) a peroxyester, (c) a divalent copper compound, and (d) an aryl borate compound, an adhesive composition, an adhesive composition kit, a dental material, and a dental material kit each using the chemical polymerization initiator, and a method of storing the adhesive composition.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: May 10, 2022
    Inventor: Keishi Fukudome
  • Patent number: 10828240
    Abstract: A photocurable composition is provided, which is characterized by comprising a polymerizable monomer component (A), an inorganic filler component (B) having an average particle diameter of 0.07 ?m or more, an organic-inorganic composite filler component (C) comprising an inorganic filler component (C1) and an organic polymer component (C2) and having an average particle diameter of 0.5 ?m or more, and a photopolymerization initiator (D), wherein the inorganic filler component (B) and the organic-inorganic composite filler component (C) are contained in a total amount of 100 to 1500 parts by mass relative to 100 parts by mass of the polymerizable monomer component (A), and the polymerizable monomer component (A), 90 parts by mass or more of the inorganic filler component (B) and 90 parts by mass or more of the organic-inorganic composite filler component (C) are selected in such a manner that specific requirements can be satisfied.
    Type: Grant
    Filed: August 30, 2017
    Date of Patent: November 10, 2020
    Assignee: TOKUYAMA DENTAL CORPORATION
    Inventors: Keishi Fukudome, Hironobu Akizumi
  • Publication number: 20200239604
    Abstract: Provided are a chemical polymerization initiator including (a) a thiourea compound, (b) a peroxyester, (c) a divalent copper compound, and (d) an aryl borate compound, an adhesive composition, an adhesive composition kit, a dental material, and a dental material kit each using the chemical polymerization initiator, and a method of storing the adhesive composition.
    Type: Application
    Filed: December 10, 2018
    Publication date: July 30, 2020
    Inventor: Keishi FUKUDOME
  • Publication number: 20190192386
    Abstract: A photocurable composition is provided, which is characterized by comprising a polymerizable monomer component (A), an inorganic filler component (B) having an average particle diameter of 0.07 ?m or more, an organic-inorganic composite filler component (C) comprising an inorganic filler component (C1) and an organic polymer component (C2) and having an average particle diameter of 0.5 ?m or more, and a photopolymerization initiator (D), wherein the inorganic filler component (B) and the organic-inorganic composite filler component (C) are contained in a total amount of 100 to 1500 parts by mass relative to 100 parts by mass of the polymerizable monomer component (A), and the polymerizable monomer component (A), 90 parts by mass or more of the inorganic filler component (B) and 90 parts by mass or more of the organic-inorganic composite filler component (C) are selected in such a manner that specific requirements can be satisfied.
    Type: Application
    Filed: August 30, 2017
    Publication date: June 27, 2019
    Applicant: TOKUYAMA DENTAL CORPORATION
    Inventors: Keishi FUKUDOME, Hironobu AKIZUMI