Patents by Inventor Namiki NIWA

Namiki NIWA 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 stereolithography-type three-dimensional printing material for preparing dental three-dimensional modeled object
    Patent number: 11759299
    Abstract: To provide a dental stereolithography-type three-dimensional printing material in which the total preparing time required from modeling with using a 3D printer to a final curing is short, work efficiency is excellent, temporal shrinkage deformation of a dental three-dimensional modeled object is suppressed and a dimensional accuracy is excellent. The dental stereolithography-type three-dimensional printing material of the present invention comprises at least one or more (a) monofunctional acrylate monomer having an aromatic ring and (b) photopolymerization initiator, wherein an electronegativity difference between adjacent atoms which are bonded by covalent bond in all atoms constituting the (a) monofunctional acrylate monomer having an aromatic ring is less than 1.0.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: September 19, 2023
    Assignee: SHOFU INC.
    Inventors: Namiki Niwa, Hidefumi Fujimura
  • Dental stereolithography-type three-dimensional printing material for preparing dental three-dimensional modeled object
    Publication number: 20200390527
    Abstract: To provide a dental stereolithography-type three-dimensional printing material in which the total preparing time required from modeling with using a 3D printer to a final curing is short, work efficiency is excellent, temporal shrinkage deformation of a dental three-dimensional modeled object is suppressed and a dimensional accuracy is excellent. The dental stereolithography-type three-dimensional printing material of the present invention comprises at least one or more (a) monofunctional acrylate monomer having an aromatic ring and (b) photopolymerization initiator, wherein an electronegativity difference between adjacent atoms which are bonded by covalent bond in all atoms constituting the (a) monofunctional acrylate monomer having an aromatic ring is less than 1.0.
    Type: Application
    Filed: March 25, 2020
    Publication date: December 17, 2020
    Applicant: SHOFU INC.
    Inventors: Namiki NIWA, Hidefumi FUJIMURA