Patents by Inventor Masaru Matukura

Masaru Matukura 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).

  • Nodular graphite cast iron with high strength and high toughness
    Patent number: 7081172
    Abstract: A nodular graphite cast iron is provided, having a pearlite matrix, with high strength and high toughness. The nodular graphite cast iron consists essentially of, by weight %: from 3.0 to 4.6% of carbon; from 1.6 to 2.5% of silicon; from 0.2 to 0.6% of manganese; from 0.02 to 0.05% of magnesium; from 0.0004 to 0.090% of zirconium; at least one of tin and copper such that ? ranges from 0.01 to 0.06% where ? indicates a tin conversion amount defined by a summation of a weight % of the tin and 0.1× a weight % of the copper; and the balance of iron and inevitable foreign matters.
    Type: Grant
    Filed: October 14, 2003
    Date of Patent: July 25, 2006
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Yasuhiro Enya, Francois Coderre, Yoshikazu Ibayashi, Masaru Matukura
  • Nodular graphite cast iron with high strength and high toughness
    Publication number: 20040079450
    Abstract: A nodular graphite cast iron is provided, having a pearlite matrix, with high strength and high toughness. The nodular graphite cast iron consists essentially of, by weight %: from 3.0 to 4.6% of carbon; from 1.6 to 2.5% of silicon; from 0.2 to 0.6% of manganese; from 0.02 to 0.05% of magnesium; from 0.0004 to 0.090% of zirconium; at least one of tin and copper such that &agr; ranges from 0.01 to 0.06% where a indicates a tin conversion amount defined by a summation of a weight % of the tin and 0.1× a weight % of the copper; and the balance of iron and inevitable foreign matters.
    Type: Application
    Filed: October 14, 2003
    Publication date: April 29, 2004
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yasuhiro Enya, Francois Coderre, Yoshikazu Ibayashi, Masaru Matukura
  • Nodular graphite cast iron with high strength and high toughness
    Publication number: 20030051776
    Abstract: A nodular graphite cast iron is provided, having a pearlite matrix, with high strength and high toughness. The nodular graphite cast iron consists essentially of, by weight %,: from 3.0 to 4.6% of carbon; from 1.6 to 2.5% of silicon; from 0.2 to 0.6% of manganese; from 0.02 to 0.05% of magnesium; from 0.0004 to 0.090% of zirconium; at least one of tin and copper such that &agr; ranges from 0.01 to 0.06% where &agr; indicates a tin conversion amount defined by a summation of a weight % of the tin and 0.1×a weight % of the copper; and the balance of iron and inevitable foreign matters.
    Type: Application
    Filed: March 13, 2002
    Publication date: March 20, 2003
    Applicant: AISIN SEIKI KABUSHIKI KAISHA
    Inventors: Yasuhiro Enya, Francois Coderre, Yoshikazu Ibayashi, Masaru Matukura