Patents by Inventor Itaru Yasui

Itaru Yasui 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).

  • Nucleating agents for crystallized glasses, crystallized glasses, magnetic discs substrate and magnetic discs
    Patent number: 6372319
    Abstract: A nucleating agent for producing a crystallized glass, which nucleating agent is to make fine particles at least in the cristobalite phase when added into the crystallized glass containing at least the cristobalite phase, and includes one or more kinds of metallic compounds selected from the group consisting of molybdenum compounds and tantalum compounds.
    Type: Grant
    Filed: September 8, 1999
    Date of Patent: April 16, 2002
    Assignee: NGK Insulators, Ltd.
    Inventors: Masahiro Abe, Itaru Yasui, Yusuke Yamada