Patents by Inventor Eiji Kakamu

Eiji Kakamu 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 and ceramic heater
    Patent number: 7919734
    Abstract: A ceramic heater includes a core material and a ceramic sheet covering the core material, and wherein a side of the ceramic sheet opposite the core material is an outer side of the ceramic heater. A method for manufacturing the ceramic heater includes forming a through hole in a ceramic sheet which is diametrically enlarged from a first surface toward a second surface of the ceramic sheet, forming a via conductor, forming on the second surface a heating portion and lead portion for connecting the heating portion and the via conductor, and covering a core material with the ceramic sheet such that the first surface faces an outer side of the ceramic heater.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: April 5, 2011
    Assignee: NGK Spark Plug Co., Ltd.
    Inventors: Kikuo Sakurai, Eiji Kakamu
  • METHOD FOR MANUFACTURING CERAMIC HEATER AND CERAMIC HEATER
    Publication number: 20080023467
    Abstract: A ceramic heater and method for manufacturing the ceramic heater, the ceramic heater including a core material and a ceramic sheet covering the core material, and wherein a side of the ceramic sheet opposite the core material is an outer side of the ceramic heater, the method including forming a through hole in a ceramic sheet which is diametrically enlarged from a first surface toward a second surface of the ceramic sheet, forming a via conductor, forming on the second surface a heating portion and a lead portion for connecting the heating portion and the via conductor, and covering a core material with the ceramic sheet such that the first surface faces an outer side of the ceramic heater.
    Type: Application
    Filed: July 23, 2007
    Publication date: January 31, 2008
    Applicant: NGK SPARK PLUG CO., LTD.
    Inventors: Kikuo SAKURAI, Eiji KAKAMU