Patents by Inventor Kunitsugu Mototani

Kunitsugu Mototani 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 producing honeycomb structure molding die
    Patent number: 8122584
    Abstract: In a method of producing a honeycomb structure molding die composed of feed holes through which molding material is fed and slit grooves communicated with the feed holes for the use of molding a honeycomb structure body, the slit grooves are formed on one surface of a metal material in a lattice arrangement by repeatedly moving a thin circular grindstone blade which is rotating in a straight-line direction or a line direction approximating a straight line in order to cut the surface of the metal material. In particular, the method removes fine metal powder, generated by cutting the surface of the metal material, using polishing grooves formed in a dressing grindstone disposed in front of the metal material every cutting of the metal material during the slit groove formation.
    Type: Grant
    Filed: December 26, 2007
    Date of Patent: February 28, 2012
    Assignee: Denso Corporation
    Inventors: Toshiji Kondou, Yuji Yamada, Kunitsugu Mototani
  • Method of producing honeycomb structure molding die
    Publication number: 20080156061
    Abstract: In a method of producing a honeycomb structure molding die composed of feed holes through which molding material is fed and slit grooves communicated with the feed holes for the use of molding a honeycomb structure body, the slit grooves are formed on one surface of a metal material in a lattice arrangement by repeatedly moving a thin circular grindstone blade which is rotating in a straight-line direction or a line direction approximating a straight line in order to cut the surface of the metal material. In particular, the method removes fine metal powder, generated by cutting the surface of the metal material, using polishing grooves formed in a dressing grindstone disposed in front of the metal material every cutting of the metal material during the slit groove formation.
    Type: Application
    Filed: December 26, 2007
    Publication date: July 3, 2008
    Applicant: DENSO CORPORATION
    Inventors: Toshiji Kondou, Yuji Yamada, Kunitsugu Mototani