Patents by Inventor Kimitoshi Ueno

Kimitoshi Ueno 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).

  • Flux composition for ceramic color, containing no harmful heavy metal
    Patent number: 4315778
    Abstract: A flux composition for ceramic color, containing no harmful heavy metal such as lead, cadmium, chromium, etc. is provided.The flux composition consists mainly of 30 to 45% of SiO.sub.2, 0 to 5% of TiO.sub.2, 4 to 10% of ZrO.sub.2, 13 to 18% of B.sub.2 O.sub.3, 18 to 23% of ZnO, 0 to 3% of CaO, 12 to 15% of the total of two or three kinds of R.sub.2 O selected from Na.sub.2 O, K.sub.2 O and Li.sub.2 O, 4 to 10% of fluorine and 0 to 5% of tin oxide (% being all by weight).The composition uses no lead which has been indispensable for lower melting glasses, and exhibits superior performances difficult to afford according to conventional lower melting lead-free fluxes.
    Type: Grant
    Filed: April 7, 1980
    Date of Patent: February 16, 1982
    Inventors: Kimitoshi Ueno, Toshio Yoshida