Patents by Inventor Yasuhiro TORITA

Yasuhiro TORITA 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).

  • Dental mill blank with intermediate color layer at 30% position
    Patent number: 10588726
    Abstract: A dental mill blank having a multi-layer structure has been required to improve the reproducibility of a color tone of the natural tooth in a dental crown restoration cut by CAD/CAM technique. Especially, a reproduction of the color tone of a cavity or a groove is required in a dental crown form of the molar tooth. The present dental mill blank has three or more layers wherein a color of a 30% position layer which includes a 30% position which is a position spaced from a surface of the dental mill blank of a W layer-side by 30% satisfies a specified relational expression, and a contrast ratio of the 30% position layer is within a range of the contrast ratio of the D layer×(0.70 to 1.00).
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: March 17, 2020
    Assignee: SHOFU INC.
    Inventors: Yasuhiro Torita, Yusei Kadobayashi
  • DENTAL MILL BLANK WITH INTERMEDIATE COLOR LAYER AT 30% POSITION
    Publication number: 20180147034
    Abstract: A dental mill blank having a multi-layer structure has been required to improve the reproducibility of a color tone of the natural tooth in a dental crown restoration cut by CAD/CAM technique. Especially, a reproduction of the color tone of a cavity or a groove is required in a dental crown form of the molar tooth. The present disclosure provides a dental mill blank having three or more layers wherein a color of a 30% position layer which includes a 30% position which is a position spaced from a surface of the dental mill blank of a W layer-side by 30% satisfies a specified relational expression, and a contrast ratio of the 30% position layer is within a range of the contrast ratio of the D layer×(0.70 to 1.00).
    Type: Application
    Filed: June 20, 2017
    Publication date: May 31, 2018
    Applicant: SHOFU INC.
    Inventors: Yasuhiro TORITA, Yusei KADOBAYASHI
  • Abrasive disc for dental prosthesis
    Patent number: D977651
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: February 7, 2023
    Assignee: KABUSHIKI KAISHA SHOFU
    Inventors: Naoki Yumiyama, Yasuhiro Torita, Sayaka Ishida, Yasushi Nakano