Patents by Inventor Minoru Numaguchi

Minoru Numaguchi 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).

  • Antibacterial glass composition and antibacterial polymer composition using the same
    Patent number: 6939820
    Abstract: The present invention provides an antibacterial glass composition exhibiting high antibacterial performance with sufficiently sustaining antibacterial performance by adding a small amount of the antibacterial component, and an antibacterial polymer composition using the antibacterial glass composition. The present invention provides an antibacterial glass composition containing 0.1 to 5.0% by weight of Ag2O in a glass composition containing 30 to 60 mol % of P2O5, 1 to 15 mol % of one or more compounds selected from the group consisting of K2O, Na2O and Li2O, 35 to 55 mol % of one or more compounds selected from the group consisting of MgO, CaO and ZnO, and 0.01 to 3 mol % of one or more compounds selected from the group consisting of La2O3 and Y2O3.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: September 6, 2005
    Assignee: Ishisuka Garasu Kabushiki Kaisha
    Inventors: Minoru Numaguchi, Makio Nomura
  • Antibacterial glass composition and antibacterial polymer composition using the same
    Publication number: 20040170700
    Abstract: The present invention provides an antibacterial glass composition exhibiting high antibacterial performance with sufficiently sustaining antibacterial performance by adding a small amount of the antibacterial component, and an antibacterial polymer composition using the antibacterial glass composition. The present invention provides an antibacterial glass composition containing 0.1 to 5.0% by weight of Ag2O in a glass composition containing 30 to 60 mol % of P2O5, 1 to 15 mol % of one or more compounds selected from the group consisting of K2O, Na2O and Li2O, 35 to 55 mol % of one or more compounds selected from the group consisting of MgO, CaO and ZnO, and 0.01 to 3 mol % of one or more compounds selected from the group consisting of La2O3 and Y2O3.
    Type: Application
    Filed: November 26, 2003
    Publication date: September 2, 2004
    Applicant: ISHIZUKA GARASU KABUSHIKI KAISHA
    Inventors: Minoru Numaguchi, Makio Nomura