Patents by Inventor Takako Yazawa

Takako Yazawa 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, antifungal or antialgal article and process for producing same
    Patent number: 6509057
    Abstract: An antibacterial, antifungal or antialgal article includes an antibacterial, antifungal or antialgal component, for example, silver and copper, an alloy thereof or a compound thereof diffused from a surface into the inside of the surface portion of an article, for example, a metal, glass or ceramic article.
    Type: Grant
    Filed: March 13, 2001
    Date of Patent: January 21, 2003
    Assignee: Sumitomo Osaka Cement, Co., Ltd.
    Inventors: Keijiro Shigeru, Takako Yazawa, Yoshitomo Inoue, Yasuyuki Kurino
  • Antibacterial, antifungal or antialgal article and process for producing same
    Publication number: 20020001604
    Abstract: An antibacterial, antifungal or antialgal article includes an antibacterial, antifungal or antialgal component, for example, silver and copper, an alloy thereof or a compound thereof diffused from a surface into the inside of the surface portion of an article, for example, a metal, glass or ceramic article.
    Type: Application
    Filed: March 13, 2001
    Publication date: January 3, 2002
    Inventors: Keijiro Shigeru, Takako Yazawa, Yoshitomo Inoue, Yasuyuki Kurino
  • Anti-bacterial and anti-fungal ceramic product
    Patent number: 5882808
    Abstract: The present invention provides an anti-bacterial and anti-fungal glaze composition for ceramic products formed by incorporating a silver-containing substance; and a fire resistant material and/or glass composition. The present invention can be used in the manufacture of ceramic products requiring sanitary properties such as tile, sanitary earthenware, commodes, bath tubs and the like, and according to the present invention, anti-bacterial and anti-fungal properties can be effectively exhibited therein. In particular, the present invention can be used in sink basins, tile, commodes, bath tubs, and the like of hospitals, hotels and public facilities.
    Type: Grant
    Filed: September 6, 1995
    Date of Patent: March 16, 1999
    Assignee: Sumitomo Osaka Cement Co., Ltd.
    Inventors: Takashi Oku, Keijiro Shigeru, Takako Yazawa, Tomohiko Iijima, Nobuyuki Kumakura
  • Anti-bacterial and anti-fungal glaze composition for ceramic products
    Patent number: 5807641
    Abstract: The present invention provides an anti-bacterial and anti-fungal glaze composition for ceramic products formed by incorporating a silver-containing substance; and a refractory and/or glass composition. The present invention can be used in the manufacture of ceramic products requiring sanitary properties such as tile, sanitary earthenware, commodes, bath tubs and the like, and according to the present invention, anti-bacterial and anti-fungal properties can be effectively exhibited therein. In particular, the present invention can be used in sink basins, tile, commodes, bath tubs, and the like of hospitals, hotels and public facilities.
    Type: Grant
    Filed: December 5, 1995
    Date of Patent: September 15, 1998
    Assignee: Sumitomo Osaka Cement Co., Ltd.
    Inventors: Takashi Oku, Keijiro Shigeru, Takako Yazawa, Tomohiko Iijima, Nobuyuki Kumakura