Patents Assigned to GC Corporation
  • Patent number: 10821221
    Abstract: An embodiment of the present invention is an encased syringe in which a prefilled syringe is accommodated in a case. The prefilled syringe includes a cylindrical syringe body filled with a foamable material and a plunger pressed into the syringe body on one end side. The case includes a body accommodating part faulted to be depressed along the shape of the syringe body to accommodate the syringe body and a plunger accommodating part formed to be depressed along the shape of the plunger to accommodate the plunger. The length of the plunger accommodating part is smaller than the length of the plunger in an axial direction of the prefilled syringe.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: November 3, 2020
    Assignee: GC Corporation
    Inventors: Makoto Takahashi, Manami Kurakazu, Yuji Fujimaki, Kaori Watanabe
  • Patent number: 10806680
    Abstract: A dental polymerizable composition including a glass powder and a (meth)acrylate is provided. The glass powder includes zinc, silicon, and fluorine and is substantially free of aluminum.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: October 20, 2020
    Assignee: GC Corporation
    Inventors: Kosuke Honda, Hirosato Kato, Ryosuke Yoshimitsu, Satomi Tateiwa, Toshihiko Tachibana
  • Patent number: 10744071
    Abstract: According to an aspect of the present invention, a dental alginate impression material includes an alginate, calcium sulfate, and an aminocarboxylic acid compound.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: August 18, 2020
    Assignee: GC Corporation
    Inventors: Daisuke Usuki, Naofumi Niizeki, Tomohiro Kumagai
  • Patent number: 10639243
    Abstract: A dental primer includes: a (meth)acrylate having an acid group; a vanadium compound and/or a copper compound; a polymerization inhibitor; and water. In the dental primer, a content of the (meth)acrylate having the acid group is in a range of from 15% by mass to 60% by mass, a total content of the vanadium compound and the copper compound is in a range of from 0.25% by mass to 0.45% by mass, and a content of the polymerization inhibitor is in a range of from 0.8% by mass to 3% by mass.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: May 5, 2020
    Assignee: GC Corporation
    Inventors: Ayaka Sugawara, Naofumi Matsumoto
  • Patent number: 10639244
    Abstract: A single-component dental photopolymerizable composition is provided that includes a (meth)acrylate compound, a vanadium compound, an ?-diketone compound, and a tertiary aromatic amine compound.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: May 5, 2020
    Assignee: GC Corporation
    Inventors: So Ishizuka, Yusuke Sakaguchi, Naofumi Matsumoto
  • Publication number: 20200115231
    Abstract: The present invention provides: a method for producing a shaped product comprising octacalcium phosphate and having a volume of 2.0 mm3 or more, comprising immersing a precursor ceramic composition containing at least one of Ca and PO4 in composition, having a solubility in H2O higher than that of octacalcium phosphate, and having a volume greater than 2.0 mm3, in a solution containing a component which is not contained in the precursor ceramic composition, among the components Ca, PO4 and H2O, which are components of octacalcium phosphate to allow the precursor ceramic composition to react, thereby converting at least a part of the precursor ceramic composition into octacalcium phosphate; and the like.
    Type: Application
    Filed: June 15, 2018
    Publication date: April 16, 2020
    Applicant: GC Corporation
    Inventors: Yuki SUGIURA, Kunio ISHIKAWA
  • Patent number: 10595963
    Abstract: A dispenser includes a guide shaft, a housing, accommodating the guide shaft, and supporting the guide shaft movably frontward and rearward along an axial direction, a slide block slidably mounted on the guide shaft, a piston shaft having one end mounted on the slide block, and another end projecting from the housing as the slide block moves frontward, a handle projecting from the housing, a slide bar having one end rotatably supported on the housing, and another end approaching the handle when rotated, and an engaging piece provided on the one end of the slide bar and engaging a guide groove formed in the guide shaft, wherein the engaging piece moves the guide shaft frontward when the other end of the slide bar is rotated to approach the handle due to an operation of a user.
    Type: Grant
    Filed: April 26, 2017
    Date of Patent: March 24, 2020
    Assignee: GC Corporation
    Inventors: Tatsunosuke Miyano, Shigeaki Matsunaga
  • Patent number: 10561584
    Abstract: A dental adhesive agent includes a polymerizable monomer; first and second inorganic particles which have been subjected to a surface treatment by a chemical compound, respectively; and a third inorganic particle. The first inorganic particle has a volume median diameter greater than or equal to 0.1 ?m and less than or equal to 0.5 ?m, the second inorganic particle has a volume median diameter greater than or equal to 0.6 ?m and less than or equal to 0.9 ?m, and the third inorganic particle has a mean primary-particle diameter greater than or equal to 5 nm and less than or equal to 50 nm. The mass ratio of the third inorganic particle with respect to the gross mass of the first inorganic particle, the second inorganic particle and the third inorganic particle is greater than or equal to 0.001 and less than or equal to 0.05.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: February 18, 2020
    Assignee: GC Corporation
    Inventors: Hiroaki Kakinuma, Kensuke Fujimori, Naofumi Matsumoto
  • Publication number: 20190359394
    Abstract: A one-touch openable cap includes: a base including coupling means coupled to a bottle, a ring connected to the coupling means and disposed with a space between the coupling means and the ring to be deformed by press forces from left and right sides so as to allow a front edge of the ring to be frontwardly pushed out, and a latch portion disposed on the front edge of the ring; and a lid portion pivotable relative to the base and including a body to cover the nozzle when the lid portion is closed, a claw disposed on the body and to be latched to the latch portion when the lid portion is closed. Upon press of the ring from the left and right sides, the ring is deformed, the claw is released from the latch portion, the lid portion pivots, and the nozzle is uncovered.
    Type: Application
    Filed: August 7, 2019
    Publication date: November 28, 2019
    Applicant: GC Corporation
    Inventors: Takumi Suzuki, Akihiro Fujii
  • Publication number: 20190358001
    Abstract: A dental tray system includes a maxillary impression tray configured to be filled with an impression material and to take an impression of an upper jaw side of an oral cavity; a mandibular impression tray configured to be filled with the impression material and to take the impression of a lower jaw side of the oral cavity; and a support plate provided between the maxillary impression tray and the mandibular impression tray and configured to movably support the maxillary impression tray and the mandibular impression tray in a front-to-rear direction.
    Type: Application
    Filed: September 27, 2017
    Publication date: November 28, 2019
    Applicant: GC Corporation
    Inventors: Keiichi SASAKI, Takayuki MICHII
  • Patent number: 10470981
    Abstract: An aspect of the present invention relates to a dental cement that includes a first agent including an organic peroxide and a (meth)acrylate; and a second agent including a thiourea derivative, an ascorbate, a vanadium compound, and a (meth)acrylate, where the first agent and the second agent each have a water content that is less than or equal to 1 mass %.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: November 12, 2019
    Assignee: GC Corporation
    Inventors: Atsushi Fujimi, Syouichi Fukushima
  • Patent number: 10449124
    Abstract: A polymerizable composition for dental use including a (meth)acrylate monomer that is able to cyclopolymerize is provided.
    Type: Grant
    Filed: June 29, 2016
    Date of Patent: October 22, 2019
    Assignee: GC Corporation
    Inventors: Takayuki Murata, Nobuhito Takagi, Takayuki Ueno
  • Patent number: 10441512
    Abstract: A dental curable composition includes a polymerizable monomer, inorganic particles (A), and inorganic particles (B), wherein the inorganic particles (A) have a volume-median particle size of more than or equal to 0.1 ?m and less than or equal to 0.9 ?m and are surface-treated with a compound expressed by a general formula (1), the inorganic particles (B) have an average primary particle size of more than or equal to 5 nm and less than or equal to 50 nm, where at least one of a group expressed by a general formula (A) and a group expressed by a general formula (B) is present at surfaces of the inorganic particles (B), and the ratio of the mass of the inorganic particles (B) to the total mass of the inorganic particles (A) and the inorganic particles (B) is more than or equal to 0.02 and less than or equal to 0.05.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: October 15, 2019
    Assignee: GC Corporation
    Inventors: Hiroaki Tanaka, Naofumi Matsumoto
  • Publication number: 20190167380
    Abstract: Provided is a packaging body for viscous dental material of easy structure, including a container (11) of cylindrical shape whose wall thickness is 0.1 mm to 0.8 mm, including one end closed with a sealed part (12a) that is formed of facing edges of the one end, the edges being joined together; and a viscous dental material (15) filled inside the container, having a consistency of 10 mm to 25 mm.
    Type: Application
    Filed: June 26, 2017
    Publication date: June 6, 2019
    Applicant: GC Corporation
    Inventors: Takumi SUZUKI, Yuji FUJIMAKI
  • Patent number: D859152
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: September 10, 2019
    Assignee: GC Corporation
    Inventor: Takumi Suzuki
  • Patent number: D868255
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: November 26, 2019
    Assignee: GC Corporation
    Inventors: Toshihiko Azuma, Go Mashio, Shigenori Akiyama, Hayato Yokohara
  • Patent number: D868256
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: November 26, 2019
    Assignee: GC Corporation
    Inventors: Hayato Yokohara, Go Mashio, Shigenori Akiyama, Toshihiko Azuma
  • Patent number: D868257
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: November 26, 2019
    Assignee: GC Corporation
    Inventors: Shigenori Akiyama, Go Mashio, Hayato Yokohara, Toshihiko Azuma
  • Patent number: D873131
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: January 21, 2020
    Assignee: GC Corporation
    Inventor: Kaori Watanabe
  • Patent number: D885901
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: June 2, 2020
    Assignee: GC Corporation
    Inventor: Tsukasa Kaneko