Patents by Inventor Kazuhisa Toyofuku

Kazuhisa Toyofuku 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 device
    Patent number: 11643368
    Abstract: The invention provides a ceramic device enabling more complex, elaborate patterns for resistance heating elements or electrodes. A ceramic device includes a ceramic substrate consisting of a ceramic sintered body and including at least a base layer, an intermediate layer laminated over the base layer, and an overlayer laminated over the intermediate layer; and an electrifiable resistance heating element or electrode having a predetermined pattern extending in a planar shape and being embedded in the ceramic substrate. A horizontal surface is defined in the upper surface of the intermediate layer, along which the resistance heating element or electrode is arranged, and the overlayer is laminated onto the upper surface of the intermediate layer to cover the resistance heating element or electrode.
    Type: Grant
    Filed: December 25, 2018
    Date of Patent: May 9, 2023
    Assignee: MARUWA CO., LTD.
    Inventors: Kazuhisa Toyofuku, Masaaki Tanaka, Kiminori Hori
  • CERAMIC DEVICE
    Publication number: 20210107836
    Abstract: The invention provides a ceramic device enabling more complex, elaborate patterns for resistance heating elements or electrodes. A ceramic device includes a ceramic substrate consisting of a ceramic sintered body and including at least a base layer, an intermediate layer laminated over the base layer, and an overlayer laminated over the intermediate layer; and an electrifiable resistance heating element or electrode having a predetermined pattern extending in a planar shape and being embedded in the ceramic substrate. A horizontal surface is defined in the upper surface of the intermediate layer, along which the resistance heating element or electrode is arranged, and the overlayer is laminated onto the upper surface of the intermediate layer to cover the resistance heating element or electrode.
    Type: Application
    Filed: December 25, 2018
    Publication date: April 15, 2021
    Inventors: Kazuhisa Toyofuku, Masaaki TANAKA, Kiminori HORI