Patents by Inventor Satoru Noudomi

Satoru Noudomi 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).

  • Overglaze colors for pottery
    Patent number: 5262363
    Abstract: An overglaze color for pottery. Pigment is added to a colorless frit which has the composition (wt %):(1) silicon dioxide 30 to 70(2) alumina 0.1 to 15(3) boron oxide 20 to 40(4) alkali metal oxide 2 to 17(5) one or more oxide selected from lanthanum oxide, niobium oxide, tantalum oxide, hafnium oxide, scandium oxide, samarium oxide, europium oxide, gadolinium oxide, thulium oxide, ytterbium oxide, lutetium oxide, terbium oxide, or dysprosium oxide 0.1 to 15and having a thermal expansion coefficient of 5.0.times.10.sup.-6 /.degree. C. to 7.0.times.10.sup.-6 /.degree. C. at 50.degree. to 350.degree. C. and a thermal softeningpVperature of 500.degree. to 640.degree. C. The overglaze color according to the invention causes no cracking, increases the color developing property of the pigment and has high chemical durability.
    Type: Grant
    Filed: February 2, 1993
    Date of Patent: November 16, 1993
    Assignee: Saga Prefecture
    Inventors: Shuji Yoshida, Yasuyuki Tsutsumi, Satoru Noudomi, Junichi Kawaguchi