Patents by Inventor Ryuji Emoto

Ryuji Emoto 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 of manufacturing electrode complex for forming electrode of spark plug, and method of manufacturing spark plug
    Patent number: 9065257
    Abstract: A method of manufacturing an electrode composite for forming an electrode of a spark plug, the electrode composite being formed by laser-welding a first electrode member and a second electrode member together.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: June 23, 2015
    Assignee: NGK SPARK PLUG CO., LTD.
    Inventors: Hiroshi Ichihara, Ryuji Emoto
  • Method of manufacturing spark plug
    Patent number: 8469759
    Abstract: In joining a composite tip to an electrode, a method is used for properly adjusting the height of radiation of a laser beam to the height of the boundary between two tips used to form the composite tip. Further, a process for joining a first tip and a second tip together by use of a laser beam includes the steps of; (a) disposing the second tip on a support; (b) obtaining, after pressing downward at least the second tip by the use of a pressing jig, a correction value for correcting the height of radiation of a laser beam; (c) correcting the height of radiation of the laser beam on the basis of the correction value; and (d) joining the first and second tips together by use of the laser beam.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: June 25, 2013
    Assignee: NGK Spark Plug Co., Ltd
    Inventors: Yasuhiro Hori, Ryuji Emoto
  • METHOD OF MANUFACTURING ELECTRODE COMPLEX FOR FORMING ELECTRODE OF SPARK PLUG, AND METHOD OF MANUFACTURING SPARK PLUG
    Publication number: 20130157538
    Abstract: A method of manufacturing an electrode composite for forming an electrode of a spark plug, the electrode composite being formed by laser-welding a first electrode member and a second electrode member together.
    Type: Application
    Filed: September 20, 2011
    Publication date: June 20, 2013
    Inventors: Hiroshi Ichihara, Ryuji Emoto
  • METHOD OF MANUFACTURING SPARK PLUG
    Publication number: 20120252298
    Abstract: In joining a composite tip to an electrode, a method is used for properly adjusting the height of radiation of a laser beam to the height of the boundary between two tips used to form the composite tip. Further, a process for joining a first tip and a second tip together by use of a laser beam includes the steps of; (a) disposing the second tip on a support; (b) obtaining, after pressing downward at least the second tip by the use of a pressing jig, a correction value for correcting the height of radiation of a laser beam; (c) correcting the height of radiation of the laser beam on the basis of the correction value; and (d) joining the first and second tips together by use of the laser beam.
    Type: Application
    Filed: March 29, 2012
    Publication date: October 4, 2012
    Applicant: NGK Spark Plug Co., Ltd
    Inventors: Yasuhiro HORI, Ryuji Emoto