Patents by Inventor Ryota MURAYAMA

Ryota MURAYAMA 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).

  • Non-solvent dental adhesive composition
    Patent number: 11452674
    Abstract: The present invention provides a non-solvent dental adhesive composition exhibiting high initial bond strength and high bond durability to a tooth structure (wet matter) and a high dentin cohesive failure rate on a tooth structure (wet matter) and being substantially free of water and an organic solvent. The present invention relates to a non-solvent dental adhesive composition comprising: an acid group-containing polymerizable monomer (A); a hydrophobic polymerizable monomer (B) having no acid group; and a water-soluble photopolymerization initiator (C) having a solubility of 10 g/L or more in water at 25° C.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: September 27, 2022
    Assignee: KURARAY NORITAKE DENTAL INC.
    Inventors: Yamato Nojiri, Mitsunobu Kawashima, Ryo Matsuura, Ryota Murayama
  • NON-SOLVENT DENTAL ADHESIVE COMPOSITION
    Publication number: 20200206091
    Abstract: The present invention provides a non-solvent dental adhesive composition exhibiting high initial bond strength and high bond durability to a tooth structure (wet matter) and a high dentin cohesive failure rate on a tooth structure (wet matter) and being substantially free of water and an organic solvent. The present invention relates to a non-solvent dental adhesive composition comprising: an acid group-containing polymerizable monomer (A); a hydrophobic polymerizable monomer (B) having no acid group; and a water-soluble photopolymerization initiator (C) having a solubility of 10 g/L or more in water at 25° C.
    Type: Application
    Filed: August 28, 2018
    Publication date: July 2, 2020
    Applicant: KURARAY NORITAKE DENTAL INC.
    Inventors: Yamato NOJIRI, Mitsunobu KAWASHIMA, Ryo MATSUURA, Ryota MURAYAMA