Patents by Inventor Shindou Watanabe

Shindou Watanabe 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).

  • Method for manufacturing ceramic heater
    Patent number: 7347966
    Abstract: A method for manufacturing a ceramic heater includes mixing a conductive ceramic powder, an insulating ceramic powder, a sintering aid powder, and a solvent so as to obtain a slurry, drying the slurry so as to obtain a heating-element material powder, forming a green resistance-heating element from the heating-element material powder, embedding the green resistance-heating element in a ceramic substrate, and firing a resultant assembly. Water is used as the solvent. Drying of the slurry is performed by use of a fluidized-bed drying apparatus, a rotary drying apparatus, or a vibratory drying apparatus and, the apparatus being employed in combination with a medium for pulverization.
    Type: Grant
    Filed: February 25, 2003
    Date of Patent: March 25, 2008
    Assignee: NGK Spark Plug Co., Ltd.
    Inventor: Shindou Watanabe
  • Method for manufacturing ceramic heater
    Publication number: 20030183990
    Abstract: A method for manufacturing a ceramic heater includes mixing a conductive ceramic powder, an insulating ceramic powder, a sintering aid powder, and a solvent so as to obtain a slurry, drying the slurry so as to obtain a heating-element material powder, forming a green resistance-heating element from the heating-element material powder, embedding the green resistance-heating element in a ceramic substrate, and firing a resultant assembly. Water is used as the solvent. Drying of the slurry is performed by use of a fluidized-bed drying apparatus, a rotary drying apparatus, or a vibratory drying apparatus and, the apparatus being employed in combination with a medium for pulverization.
    Type: Application
    Filed: February 25, 2003
    Publication date: October 2, 2003
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventor: Shindou Watanabe