Patents Assigned to GC Corporation
  • POWDER FORMULATION FOR DENTAL COMPOSITE
    Publication number: 20200093709
    Abstract: Provided is a powder formulation for a dental composite which prevents aggregation, makes it easy to be obtained by a proper amount, and makes it possible to suppress formation of incineration residues after mixed with a liquid formulation for a dental composite to form resin. The powder formulation includes a flowability-improving agent in the form of powder, the flowability-improving agent being comprising polymethyl (meth)acrylate, the flowability-improving agent having a volume median particle diameter of 0.02 ?m to 50 ?m.
    Type: Application
    Filed: September 16, 2019
    Publication date: March 26, 2020
    Applicant: GC CORPORATION
    Inventors: Yoshie Nomura, Kenji Kojima, Tatsuya Fujimoto
  • Dispenser, and dispenser and cartridge
    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
  • TRY-IN DENTURES, PROGRAM FOR MAKING TRY-IN DENTURES, AND METHOD FOR MAKING DENTURES
    Publication number: 20200054422
    Abstract: To provide try-in dentures which make it possible to adjust a bite more easily with high accuracy, a denture base part 12; a dentition part 13; an adjustment part 15; and a base part 14 are included, the adjustment part and the base part being separable from each other, and the adjustment part includes all of occlusal surfaces 13b of the dentition part, and a face 15a parallel to an occlusal plane 10a, the adjustment part being formed so that a movement of the adjustment part parallel to the occlusal plane with respect to the base part can be performed, a rotation of the adjustment part in the face parallel to the occlusal plane can be performed, or both the movement and the rotation can be performed.
    Type: Application
    Filed: October 30, 2017
    Publication date: February 20, 2020
    Applicant: GC CORPORATION
    Inventors: Takayuki MICHII, Takayuki UENO
  • Dental adhesive agent and method of manufacturing thereof
    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
  • Locking member, mixing tip, and double syringe
    Patent number: 10537679
    Abstract: A locking member that locks a mixing nozzle to a cartridge that includes two syringes, the mixing nozzle being configured to mix the materials from the two syringes within the nozzle as the materials are discharged. The locking member includes a support rod supported on the mixing nozzle that is displaceable in a direction orthogonal to the direction in which the nozzle extends, and first and second engaging parts that engage with horizontal parts provided on the cartridge. The locking member further includes an inclined part that is inclined toward the opposite side to the nozzle, and that is provided between at least one of the first engaging part and the second engaging part, or between the second engaging part and the other end of the support rod.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: January 21, 2020
    Assignee: GC CORPORATION
    Inventors: Shinichi Kojima, Shigeru Chiba, Akihiro Fujii
  • COMPOSITION FOR WHITENING TEETH
    Publication number: 20190388319
    Abstract: An object is to provide a composition for whitening teeth superior in a flavor without deteriorating the whitening performance, the composition for whitening teeth including: at least one of urea peroxide, and hydrogen peroxide; isoamyl propionate; ethyl n-octanoate; ethyl 3-methyl-3-phenylglycidate; and a compound having a ?-dicarbonyl structure in an amount of 0 mass % to 0.001 mass % on the basis of the composition.
    Type: Application
    Filed: October 24, 2017
    Publication date: December 26, 2019
    Applicant: GC CORPORATION
    Inventor: Makoto TAKAHASHI
  • ONE-TOUCH OPENABLE CAP
    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
  • DENTAL TRAY SYSTEM
    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
  • Occlusion measurement device and method for detecting occlusal force
    Patent number: 10485642
    Abstract: An information processing device (104) performs integration processing for each intersection point for raw data outputted from an occlusal force detecting device having a sensor sheet (102) which uses an organic piezoelectric film (201), to create occlusal force data, wherein the raw data includes address information of each intersection point and data obtained based on a signal indicating a change in occlusion force.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: November 26, 2019
    Assignees: MOTT LLC, GC CORPORATION
    Inventor: Mutsuo Ogawa
  • Dental cement
    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
  • Polymerizable composition for dental use
    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
  • Dental curable composition and method of manufacturing same
    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
  • Method for producing dental prosthesis, method for producing lithium disilicate blank for dental prosthesis and lithium disilicate blank for dental prosthesis
    Patent number: 10405953
    Abstract: Provided is a method for quickly producing a dental prosthesis with a good accuracy. The method for producing a dental prosthesis including: a melting step of melting a material including no less than 60.0 mass % and no more than 80.0 mass % of SiO2, no less than 10.0 mass % and no more than 20.0 mass % of Li2O, and no less than 5.1 mass % and no more than 10.0 mass % of Al2O3; a glass blank production step of cooling to solidify the molten material to obtain a glass blank; a lithium disilicate blank production step of heating the glass blank to obtain a lithium disilicate blank whose main crystalline phase is lithium disilicate; and a processing step of processing the lithium disilicate by machining.
    Type: Grant
    Filed: April 27, 2017
    Date of Patent: September 10, 2019
    Assignee: GC CORPORATION
    Inventors: Tomohiro Hoshino, Go Mashio, Tatsuya Fujimoto, Masatoshi Yoshinaga, Hayato Yokohara, Daisuke Ohta
  • Method for manufacturing calcium carbonate block
    Patent number: 10392259
    Abstract: An object is to provide a method for manufacturing a calcium carbonate block of no less than 0.1 cm in diameter and thickness, not including any impurities, and able to be employed as a raw material of an artificial bone that requires biosafety: the method includes: (a) shaping a calcium hydroxide block; (b) being exposed to carbon dioxide; and (c) immersing in a carbonate ion containing solution.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: August 27, 2019
    Assignees: GC CORPORATION, Kyushu University, National University Corporation
    Inventors: Kunio Ishikawa, Katsushi Yamamoto
  • ORTHODONTIC APPLIANCE AND METHOD FOR ATTACHING ORTHODONTIC APPLIANCE
    Publication number: 20190209271
    Abstract: [Object] An object is to provide dental braces in which sufficient adhesion strength can be maintained by simple processing within the oral cavity of a person to be treated for a long time and with which it is possible to reduce an uncomfortable feeling when the dental braces are fitted. [Solution Means] A dental brace 1a is mainly formed with a bracket main body portion 2a, an opening/closing lid portion 3a and a tooth abutting plate portion 4a. The tooth abutting plate portion 4a includes, on one surface side, a first surface portion 41 which abuts on the surface of a tooth T on the side of a tongue and includes, on a side opposite to the first surface portion 41, a second surface portion 42 to which the bracket main body portion 2b is adhered, and a charge hole portion 44 is formed which penetrates from the first surface portion 41 to the second surface portion 42.
    Type: Application
    Filed: November 22, 2017
    Publication date: July 11, 2019
    Applicants: KIRISHIMA SEIKO CO., LTD., MEDICAL CORPORATION KYOUJIN-KAI-SHIMODA ORTHODONTIC CLINIC, GC CORPORATION
    Inventors: Junichi NISHISHIGE, Tetsuya SHIMODA
  • Cap for container for liquid dripping
    Patent number: D859152
    Type: Grant
    Filed: November 7, 2017
    Date of Patent: September 10, 2019
    Assignee: GC Corporation
    Inventor: Takumi Suzuki
  • JIG for dental prosthesis
    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
  • Jig for dental prosthesis
    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
  • Jig for dental prosthesis
    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
  • Packaging container
    Patent number: D873131
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: January 21, 2020
    Assignee: GC Corporation
    Inventor: Kaori Watanabe