Patents by Inventor Tetsuya Sugiyama

Tetsuya Sugiyama 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).

  • Thermal head and manufacturing method thereof
    Patent number: 4612433
    Abstract: A thermal head is defined as is its manufacture, the thermal head being produced on a substrate by forming a glaze layer having a number of bubbles by printing on it a glass paste containing a glass powder that contains at least 20% by weight or more of a finely divided glass powder with an average particle diameter of up to 5 .mu.m followed by calcining, and forming a heat generating resistor, an electrode and a protective layer successively on the glaze layer.
    Type: Grant
    Filed: December 26, 1984
    Date of Patent: September 16, 1986
    Assignee: Pentel Kabushiki Kaisha
    Inventors: Makoto Nagaoka, Tetsuya Sugiyama