Patents Assigned to GC Corporation
  • Patent number: 12133902
    Abstract: One embodiment of the present invention relates to a dental composition including a (meth)acrylate, an ultraviolet absorber, and a fluorescent agent, wherein the ultraviolet absorber has free of a maximum absorption wavelength in a range of greater than 320 nm and less than or equal to 500 nm.
    Type: Grant
    Filed: April 22, 2019
    Date of Patent: November 5, 2024
    Assignee: GC Corporation
    Inventors: Satoshi Jin, Takumasa Kimura, Kyousuke Hirano
  • Patent number: 12077615
    Abstract: There is provided a method of producing a polymerizable composition that includes a first polymerizable monomer; and a second polymerizable monomer, a polymer of the second polymerizable monomer, or both, the second polymerizable monomer, the polymer of the second polymerizable monomer, or the both being dispersed in the first polymerizable monomer, the method of producing a polymerizable composition includes dissolving the first polymerizable monomer; the second polymerizable monomer, the polymer of the second polymerizable monomer, or the both in a solvent to obtain a solution in a first step; and evaporating the solvent from the solution in a second step, wherein the first polymerizable monomer is a liquid, and wherein the second polymerizable monomer is a solid.
    Type: Grant
    Filed: July 26, 2021
    Date of Patent: September 3, 2024
    Assignee: GC Corporation
    Inventors: Yuri Fukuyo, Takayuki Ueno, Makoto Takahashi, Hiroki Kato, Yuki Kasai
  • Patent number: 12037180
    Abstract: A packaging container includes a body part, a lid part integrally engaged with the body part, an inner lid positioned between the body part and the lid part, a stored item containing part opening from an engaged portion of the lid part that is engaged with the body part, and configured to contain a stored item, a chemical agent containing part opening from the engaged portion of the lid part that is engaged with the body part, the chemical agent containing part being formed separately from the stored item containing part, and a ventilation path in which the stored item containing part and the chemical agent containing part are in communication, the ventilation path being formed in an inner space defined by the first member and the second member.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: July 16, 2024
    Assignee: GC Corporation
    Inventor: Kaori Watanabe
  • Patent number: 11851263
    Abstract: A dental material container includes a cylindrical body that stores a dental material including a pair of opposing primary surfaces, and a rotatable cap covering the body. The cap includes an internal space capable of housing the dental material. The body includes a pair of first holders that are formed on an inner surface of the body to movably hold the primary surfaces of the dental material; the cap includes a pair of second holders formed inside of the cap to movably hold the primary surfaces of the dental material. When the cap is rotated in the circumferential direction relative to the body, a continuous space where the dental material is movable is formed by the first and second holders, the dental material located closest to the opening in the body moves into the cap, and the dental material moved into the cap is housed in the cap.
    Type: Grant
    Filed: December 6, 2018
    Date of Patent: December 26, 2023
    Assignee: GC Corporation
    Inventor: Verstraeten Guy
  • Patent number: 11752073
    Abstract: An embodiment according to the present invention provides a dental gypsum powder including a hemihydrate gypsum and a water-reducing agent, wherein the mass ratio of the water-reducing agent to the hemihydrate gypsum is 0.1 to 1%, the content of particles having a particle diameter of 10 ?m or less is 15 to 35 volume %, the content of particles having a particle diameter of 20 ?m or less is 40 to 55 volume %, and the content of particles having a particle diameter of 30 ?m or less is 55 to 75 volume %.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: September 12, 2023
    Assignee: GC Corporation
    Inventors: Daizaburo Mori, Kenji Kojima, Masatoshi Yoshinaga
  • Patent number: 11697694
    Abstract: A method of manufacturing a polymerizable composition is capable of imparting antibacterial properties and the like to a cured product of polymerizable composition without deteriorating an appearance of the cured product of the polymerizable composition. The method of manufacturing a polymerizable monomer wherein a solution, that a second polymerizable monomer is dissolved in a first solvent, is dispersed in a first polymerizable monomer, includes mixing the first polymerizable monomer, the second polymerizable monomer, and the first solvent. The first polymerizable monomer is a liquid, and the second polymerizable monomer is a solid.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: July 11, 2023
    Assignee: GC Corporation
    Inventors: Makoto Takahashi, Naofumi Niizeki, Tomoki Kohno, Yuri Fukuyo, Toshiki Mori, Yuki Kasai, Naoya Funayama
  • Publication number: 20230093764
    Abstract: A medical honeycomb structure lacking at least a portion of an outer peripheral side wall of a honeycomb structure that includes a plurality of through-holes extending in one direction, wherein sites lacking the outer peripheral side wall have a plurality of grooves, and have a plurality of planes including distant surfaces of groove side walls flanked by the grooves.
    Type: Application
    Filed: March 5, 2021
    Publication date: March 23, 2023
    Applicants: Kunio ISHIKAWA, GC Corporation
    Inventors: Kunio ISHIKAWA, Koichiro HAYASHI, Akira TSUCHIYA, Ryo KISHIDA, Yasuharu NAKASHIMA
  • Patent number: 11571368
    Abstract: A dental polymerizable composition includes: a first component containing a (meth)acrylate, a pentavalent vanadium compound, and a thiourea derivative; and a second component containing a (meth)acrylate and an organic peroxide.
    Type: Grant
    Filed: March 3, 2021
    Date of Patent: February 7, 2023
    Assignee: GC Corporation
    Inventors: Shogo Murakami, Hiroaki Kakinuma, Keita Sato
  • Patent number: D981224
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: March 21, 2023
    Assignee: GC Corporation
    Inventors: Daiki Kishimoto, Kazuhisa Kashiwabara
  • Patent number: D999911
    Type: Grant
    Filed: October 12, 2021
    Date of Patent: September 26, 2023
    Assignee: GC Corporation
    Inventors: Natsumi Mizuno, Guy Verstraeten
  • Patent number: D1022203
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: April 9, 2024
    Assignee: GC Corporation
    Inventors: Kazuhiro Kinoshita, Yusuke Nagatomi
  • Patent number: D1022204
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: April 9, 2024
    Assignee: GC Corporation
    Inventors: Kazuhiro Kinoshita, Yusuke Nagatomi
  • Patent number: D1022205
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: April 9, 2024
    Assignee: GC Corporation
    Inventors: Kazuhiro Kinoshita, Yusuke Nagatomi
  • Patent number: D1022206
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: April 9, 2024
    Assignee: GC Corporation
    Inventors: Kazuhiro Kinoshita, Yusuke Nagatomi
  • Patent number: D1022207
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: April 9, 2024
    Assignee: GC Corporation
    Inventors: Kazuhiro Kinoshita, Yusuke Nagatomi
  • Patent number: D1022208
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: April 9, 2024
    Assignee: GC Corporation
    Inventors: Kazuhiro Kinoshita, Yusuke Nagatomi
  • Patent number: D1025352
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: April 30, 2024
    Assignee: GC Corporation
    Inventors: Natsumi Mizuno, Yuji Fujimaki, Norito Inagaki
  • Patent number: D1031042
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: June 11, 2024
    Assignee: GC Corporation
    Inventors: Kazuhiro Kinoshita, Yusuke Nagatomi
  • Patent number: D1031988
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: June 18, 2024
    Assignee: GC Corporation
    Inventors: Kazuhiro Kinoshita, Yusuke Nagatomi
  • Patent number: D1046158
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: October 8, 2024
    Assignee: GC Corporation
    Inventors: Natsumi Mizuno, Yuji Fujimaki, Norito Inagaki