Patents by Inventor Eiki Matsuura

Eiki Matsuura 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).

  • Forming die apparatus
    Patent number: 7093526
    Abstract: A method of manufacturing a billet for cold forging according to the present invention is characterized by the first spheroidizing annealing step of spheroidizing a carbide in a blank, the drawing step of drawing the blank at a predetermined sectional area reduction ratio after the first spheroidizing annealing step, and the second spheroidizing annealing step of promoting the dispersion of the internal carbide for an increased spheroidizing ratio after the drawing step. The drawing step has a drawing ratio of approximately 20%. The blank is cut to a desired dimension between said first spheroidizing annealing step and said second spheroidizing annealing step.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: August 22, 2006
    Assignee: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Shoichi Ando, Hiroshi Ono, Tadashi Kobayashi, Mitsuru Kamikawa, Fumio Fukuda, Eiki Matsuura
  • Billet for cold forging, method of manufacturing billet for cold forging, method of continuously cold-forging billet, method of cold-forging
    Publication number: 20040261918
    Abstract: A method of manufacturing a billet for cold forging according to the present invention is characterized by the first spheroidizing annealing step of spheroidizing a carbide in a blank, the drawing step of drawing the blank at a predetermined sectional area reduction ratio after the first spheroidizing annealing step, and the second spheroidizing annealing step of promoting the dispersion of the internal carbide for an increased spheroidizing ratio after the drawing step. The drawing step has a drawing ratio of approximately 20%. The blank is cut to a desired dimension between said first spheroidizing annealing step and said second spheroidizing annealing step.
    Type: Application
    Filed: February 26, 2004
    Publication date: December 30, 2004
    Applicant: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Shoichi Ando, Hiroshi Ono, Tadashi Kobayashi, Mitsuru Kamikawa, Fumio Fukuda, Eiki Matsuura
  • Billet for cold forging, method of manufacturing billet for cold forging, method of continuously cold-forging billet, method of cold-forging
    Publication number: 20040255635
    Abstract: A method of manufacturing a billet for cold forging according to the present invention is characterized by the first spheroidizing annealing step of spheroidizing a carbide in a blank, the drawing step of drawing the blank at a predetermined sectional area reduction ratio after the first spheroidizing annealing step, and the second spheroidizing annealing step of promoting the dispersion of the internal carbide for an increased spheroidizing ratio after the drawing step. The drawing step has a drawing ratio of approximately 20%. The blank is cut to a desired dimension between said first spheroidizing annealing step and said second spheroidizing annealing step.
    Type: Application
    Filed: February 26, 2004
    Publication date: December 23, 2004
    Applicant: Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Shoichi Ando, Hiroshi Ono, Tadashi Kobayashi, Mitsuru Kamikawa, Fumio Fukuda, Eiki Matsuura