Patents by Inventor Toyoji Tsunoda

Toyoji Tsunoda 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 printhead
    Patent number: 4343986
    Abstract: A thermal printhead comprising a substrate, heat generating thin film resistor bodies formed on the substrate and electric conductors for supplying the heat generating thin film resistor bodies with electric power, characterized in that the heat generating thin film resistor bodies are made of a Cr-Si alloy subjected to a stabilization aging heat treatment.
    Type: Grant
    Filed: March 19, 1981
    Date of Patent: August 10, 1982
    Assignee: Hitachi, Ltd.
    Inventors: Masao Mitani, Toyoji Tsunoda, Tsuneyoshi Kawahito, Tsuneaki Kamei, Akira Yabushita