Patents Assigned to GC Corporation
  • 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
  • AIR INJECTION DEVICE AND DENTAL HANDPIECE SYSTEM
    Publication number: 20190183605
    Abstract: To provide an air injection device for a dental handpiece which makes it possible to obtain a clear image even if the position of an image taking part is changed, provided is an air injection device including: a trunk connector (41) that is in a form of a column, in the trunk connector a passage being formed; an air guiding pipe (45) that is in a form of a pipe, one end of the air guiding pipe being connected to the trunk connector, the air guiding pipe having flexibility; and a means (46) that retains the air guiding pipe in the dental handpiece main body, wherein the passage in the trunk connector branches, one of the branching passages communicating with the air guiding pipedental handpiece.
    Type: Application
    Filed: July 18, 2017
    Publication date: June 20, 2019
    Applicants: GC CORPORATION
    Inventors: Osamu MOTOYAMA, Ryouji KINAMI, Shunjirou KUME, Takahiro UENOYAMA
  • PACKAGING BODY FOR VISCOUS DENTAL MATERIAL
    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
  • DISPENSER, AND DISPENSER AND CARTRIDGE
    Publication number: 20190142549
    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: Application
    Filed: April 26, 2017
    Publication date: May 16, 2019
    Applicants: GC Corporation, SHIODA Dental Company
    Inventors: Tatsunosuke MIYANO, Shigeaki MATSUNAGA
  • METHOD FOR KNEADING DENTAL GYPSUM POWDER
    Publication number: 20190142705
    Abstract: A method for kneading a dental gypsum powder is provided that includes putting the dental gypsum powder and water in a bottle, the dental gypsum powder containing gypsum hemihydrate and a polycarboxylate-based water reducing agent, contained at 0.05 parts by mass to 0.8 parts by mass with respect to 100 parts by mass of the gypsum hemihydrate, sealing the bottle, and shaking the bottle.
    Type: Application
    Filed: April 20, 2017
    Publication date: May 16, 2019
    Applicant: GC Corporation
    Inventors: Daizaburo MORI, Masatoshi YOSHINAGA, Kaori WATANABE
  • METHOD FOR DESIGNING DENTURE, METHOD FOR PRODUCING DENTURE AND POSITIONING MEANS
    Publication number: 20190105133
    Abstract: A method for designing dentures according to which artificial teeth can be easily and accurately attached to a denture base, which is designed and shaped by CAD/CAM, when the artificial teeth are arranged on the denture base is provided. The method for designing a denture (10) on a computer based on data on an intraoral shape comprises: creating data on a shape of a denture base (20) based on the intraoral shape (S22); creating data on a position of an artificial tooth (30) to be arranged on the denture base (S23); and creating data on a shape of an occlusal guide (40) that is tabular and has a recess part corresponding to a shape of the arranged artificial tooth in an occlusal surface side (S24).
    Type: Application
    Filed: October 5, 2017
    Publication date: April 11, 2019
    Applicant: GC CORPORATION
    Inventors: Kiyotaka NAKAO, Takayuki MICHII
  • Polymerization apparatus for dental technique
    Patent number: 10245130
    Abstract: An object is to provide a polymerization apparatus for dental technique with which both of preliminary polymerization and final polymerization can be carried out by one apparatus. The apparatus includes a plurality of light sources whose light axes run at least in two directions; a cover that covers the light sources, forms a polymerization space inside thereof and switches a formation and closure of an opening that communicates inside and outside the polymerization space; a sensor that detects the formation and closure of the opening by the cover; a controller that receives signals from the sensor, and based on the formation and closure of the opening, turns on some of the light sources having two or more directions of light axis with the opening closed, and turns on some of the light sources having fewer directions of light axis than with the opening closed, with the opening open.
    Type: Grant
    Filed: September 8, 2015
    Date of Patent: April 2, 2019
    Assignee: GC CORPORATION
    Inventors: Yukie Noguchi, Mitsuaki Takada
  • Method for manufacturing dental prosthesis
    Patent number: 10182894
    Abstract: An object is to provide a method for manufacturing a dental prosthesis consisting of a plurality of layers with high productivity. The method for manufacturing a dental prosthesis comprises: filling a cavity (21a) formed in a mold which has a shape of the dental prosthesis with a layered material body (23) that is made by layering materials (23a, 23b) corresponding to the plurality of layers; and after this filling, rotating the mold on a material inlet (21b) of the mold and cutting the materials.
    Type: Grant
    Filed: February 18, 2015
    Date of Patent: January 22, 2019
    Assignee: GC CORPORATION
    Inventors: Tatsuya Fujimoto, Masatoshi Yoshinaga, Go Mashio, Daisuke Ohta
  • Polymerizable composition and kit for polymerizable composition
    Patent number: 10064789
    Abstract: A polymerizable composition includes at least one of an acrylate compound and a methacrylate compound; a barbiturate compound; an amino carboxylic acid-based chelating agent; a peroxy compound; and filler.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: September 4, 2018
    Assignee: GC Corporation
    Inventors: Naofumi Matsumoto, So Ishizuka, Mika Wako
  • METHOD FOR MANUFACTURING POROUS MATERIAL INCLUDING CALCIUM CARBONATE, AND METHOD FOR MANUFACTURING POROUS MATERIAL INCLUDING CARBONATE APATITE
    Publication number: 20180237300
    Abstract: There is provided a method for manufacturing a porous material including a calcium carbonate, the method including a digestion carbonation process of causing digestion and carbonation of a porous material including a calcium oxide in a presence of water under a flow of a gas including carbon dioxide.
    Type: Application
    Filed: August 3, 2016
    Publication date: August 23, 2018
    Applicant: GC Corporation
    Inventors: Yuuhiro SAKAI, Katsuyuki YAMANAKA, Yusuke SHIGEMITSU
  • Liquid container
    Patent number: D847659
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: May 7, 2019
    Assignee: GC Corporation
    Inventor: Takumi Suzuki
  • 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