Patents by Inventor Tokio Kamiyanagi

Tokio Kamiyanagi 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).

  • Alumina-magnesia oxide, method of making the same, and fine pulverulent body of the same
    Patent number: 5707910
    Abstract: An object of the present invention is to provide an alumina-magnesia oxide which can be fine pulverulent bodies by pulverizing. In the alumina-magnesia oxide of the present invention includes: 70-73 WT % of alumina component, which is converted into alumina (Al.sub.2 O.sub.3); and 27-30 WT % of magnesia component, which is converted into magnesia (MgO). The alumina-magnesia oxide is formed into a pulverulent body, which is a hollow grain having loosed bulk density of 0.15 g/cm.sup.3 or less and average grain diameter of 10 .mu.m or more.
    Type: Grant
    Filed: March 28, 1996
    Date of Patent: January 13, 1998
    Assignee: Taimei Kagaku Kogyo Kabushiki Kaisha
    Inventors: Tokio Kamiyanagi, Takayuki Fujita, Noriho Harumiya