Patents by Inventor Atushi Hattori

Atushi Hattori 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).

  • Molten steel producing method
    Patent number: 6740138
    Abstract: A method of producing a molten steel, including the steps of putting, in an electric furnace, an iron material and a carbon material, to melt the iron material and the carbon material and produce a high-carbon molten iron whose carbon content is not lower than 1%, storing, in a reservoir furnace whose capacity is larger than a capacity of the electric furnace, an amount of the high-carbon molten iron that corresponds to a plurality of charges of the electric furnace, and using a portion of the high-carbon molten iron stored in the reservoir furnace, to produce the molten steel in a steel producing furnace.
    Type: Grant
    Filed: May 21, 2002
    Date of Patent: May 25, 2004
    Assignee: Daido Tokushukou Kabushikikaisha
    Inventors: Hajime Amano, Akihiro Nagatani, Atushi Hattori
  • Molten steel producing method
    Publication number: 20030024349
    Abstract: A method of producing a molten steel, including the steps of putting, in an electric furnace, an iron material and a carbon material, to melt the iron material and the carbon material and produce a high-carbon molten iron whose carbon content is not lower than 1%, storing, in a reservoir furnace whose capacity is larger than a capacity of the electric furnace, an amount of the high-carbon molten iron that corresponds to a plurality of charges of the electric furnace, and using a portion of the high-carbon molten iron stored in the reservoir furnace, to produce the molten steel in a steel producing furnace.
    Type: Application
    Filed: May 21, 2002
    Publication date: February 6, 2003
    Applicant: Daido Tokushukou Kabushikikaisha
    Inventors: Hajime Amano, Akihiro Nagatani, Atushi Hattori
  • Fe-Ni-Co alloy for a shadow mask
    Patent number: 5236522
    Abstract: In an Fe-base alloy, Ni is contained by 28 to 34% by weight and Co by 2 to 7% by weight with an average grain size of 30 .mu.m or less. 60 to 95% of crystal grains are oriented in a range of .+-.5 to 45 degrees deviated from the ideal orientation of {100} [001]. Resultant low thermal expansion of the alloy assures high doming characteristics of a shadow mask made thereof.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: August 17, 1993
    Assignees: Yamaha Metanix, Mitsubishi Electric Corp., Dainippon Printing Co., Ltd.
    Inventors: Norio Fukuda, Naofumi Nakamura, Atushi Hattori, Hideya Itoh, Akira Makita, Tsutomu Hatano