Patents by Inventor Nobuya Kuriyama

Nobuya Kuriyama 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).

  • Glass for wavelength division multiplexing optical filter
    Patent number: 7091144
    Abstract: The invention relates to first, second and third glasses for wavelength division multiplexing optical filters. The first glass contains 50–65 wt % of SiO2, 5–25 wt % of Na2O, 4–20 wt % of K2O, 0–20 wt % of CaO, 0–10 wt % of MgO, 0–10 wt % of BaO, 0–10 wt % of Al2O3, and 0–10 wt % of TiO2. The second glass contains 35–55 wt % of SiO2, 10–30 wt % of TiO2, 4–20 wt % of ZrO2, 5–25 wt % of Na2O, 0–10 wt % of Al2O3, 0–20 wt % of CeO2, 0–5 wt % of Li2O, 0–20 wt % of K2O, and 0–3 wt % of at least one metal oxide selected from MgO, CaO, SrO, BaO, and ZnO. The third glass contains 35–55 wt % of SiO2, 0–20 wt % of Al2O3, 0–10 wt % of B2O3, 1–35 wt % of TiO2, 1–15 wt % of CeO2, 0–10 wt % of Li2O, 5–25 wt % of Na2O, and 0–20 wt % of K2O.
    Type: Grant
    Filed: May 27, 2003
    Date of Patent: August 15, 2006
    Assignee: Central Glass Co., Ltd.
    Inventor: Nobuya Kuriyama
  • Glass for wavelength division multiplexing optical filter
    Publication number: 20030224180
    Abstract: The invention relates to first, second and third glasses for wavelength division multiplexing optical filters. The first glass contains 50-65 wt % of SiO2, 5-25 wt % of Na2O, 4-20 wt % of K2O, 0-20 wt % of CaO, 0-10 wt % of MgO, 0-10 wt % of BaO, 0-10 wt % of Al2O3, and 0-10 wt % of TiO2. The second glass contains 35-55 wt % of SiO2, 10-30 wt % of TiO2, 4-20 wt % of ZrO2, 5-25 wt % of Na2O, 0-10 wt % of Al2O3, 0-20 wt % of CeO2, 0-5 wt % of Li20, 0-20 wt % of K2O, and 0-3 wt % of at least one metal oxide selected from MgO, CaO, SrO, BaO, and ZnO. The third glass contains 35-55 wt % of SiO2, 0-20 wt % of Al2O3, 0-10 wt % of B2O3, 1-35 wt % of TiO2, 1-15 wt % of CeO2, 0-10 wt % of Li2O, 5-25 wt % of Na2O, and 0-20 wt % of K2O.
    Type: Application
    Filed: May 27, 2003
    Publication date: December 4, 2003
    Applicant: Central Glass Company, Limited
    Inventor: Nobuya Kuriyama