Patents by Inventor Ryu Yoneda

Ryu Yoneda 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).

  • Ceramic substrate for printed circuits and production thereof
    Patent number: 4888208
    Abstract: There is provided a method of producing a ceramic substrate for printed circuits wherein at least the surface of the side to be circuit-printed is subjected to a roughening treatment with one of the following compounds:(1) substances containing sulfur trioxide and(2) substances which, upon decomposition, generate sulfur trioxide.
    Type: Grant
    Filed: October 1, 1987
    Date of Patent: December 19, 1989
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Satoshi Maeda, Ryu Yoneda, Kenichi Yokota, Hideo Miyake