Patents by Inventor Michiaki Souma

Michiaki Souma 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 for forming Re alloy coating film having high-Re-content through electroplating
    Patent number: 7368048
    Abstract: Disclosed is a method for forming a high-Re-content alloy film, such as a Re-based film containing Re at 98% or more by atomic composition, or an alloy film containing Re in the range of 65 to less than 98% by atomic composition and at least one of Ni, Fe and Co. The method comprises performing an electroplating process using an electroplating bath containing an aqueous solution which includes a perrhenate ion, at least one ion selected from the group consisting of Ni, Fe, Co and Cr ions, and at least one of a Li ion and a Na ion. The present invention allows a high-Re-content alloy film usable as a corrosion-resistant alloy coating for a high-temperature component or the like to be formed through an electroplating process using an aqueous solution, so as to provide heat/corrosion resistances to the component, even if it has a complicated shape, in a simplified manner at a low cost.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: May 6, 2008
    Assignees: Japan Science and Technology Agency, Ebara Corporation, Sapporo Electroplating Industrial Co., Ltd.
    Inventors: Toshio Narita, Shigenari Hayashi, Takayuki Yoshioka, Hiroshi Yakuwa, Michiaki Souma, Michihisa Fukumoto
  • Method for forming Re-Cr alloy film through electroplating process using bath containing Cr(VI)
    Patent number: 6998035
    Abstract: Disclosed is a method for forming a Re—Cr alloy film consisting of Re in the range of 60 to 90% by atomic composition. The method comprises performing an electroplating process using an electroplating bath containing an aqueous solution which includes a perrhenate ion and a chromium (VI) ion. The present invention allows a Re—Cr alloy film usable as a corrosion-resistant alloy coating for a high-temperature component or the like to be formed through an electroplating process using an aqueous solution, so as to provide heat/corrosion resistances to the component, even if it has a complicated shape, in a simplified manner at a low cost.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: February 14, 2006
    Assignees: Japan Science And Technology Agency, Ebara Corporation, Sapporo Electroplating Industrial Co., Ltd.
    Inventors: Toshio Narita, Shigenari Hayashi, Takayuki Yoshioka, Hiroshi Yakuwa, Michiaki Souma
  • Method for forming Re—Cr alloy film or Re-based film through electroplating process
    Patent number: 6979392
    Abstract: Disclosed is a method for forming: a Re—Cr alloy film consisting of Re in the range of greater than 0 (zero) to less than 98% by atomic composition, and the remainder being Cr except inevitable impurities; a Re-based film consisting of 98% or more, by atomic composition, of Re, with the remainder being Cr and inevitable impurities; or a Re—Cr—Ni alloy film consisting of Re in the range of 50 to less than 98% by atomic composition, Cr in the range of 2 to less than 45% by atomic composition, and the remainder being Ni except inevitable impurities. The method comprises performing an electroplating process using an electroplating bath containing an aqueous solution which includes a perrhenate ion and a chromium (III) ion.
    Type: Grant
    Filed: January 17, 2003
    Date of Patent: December 27, 2005
    Assignees: Japan Science and Technology Agency, Ebara Corporation, Sapporo Electroplating Industrial, Co., Ltd.
    Inventors: Toshio Narita, Shigenari Hayashi, Takayuki Yoshioka, Hiroshi Yakuwa, Michiaki Souma
  • Method for forming re alloy coating film having high re content through electroplating
    Publication number: 20050189230
    Abstract: Disclosed is a method for forming a high-Re-content alloy film, such as a Re-based film containing Re at 98% or more by atomic composition, or an alloy film containing Re in the range of 65 to less than 98% by atomic composition and at least one of Ni, Fe and Co. The method comprises performing an electroplating process using an electroplating bath containing an aqueous solution which includes a perrhenate ion, at least one ion selected from the group consisting of Ni, Fe, Co and Cr ions, and at least one of a Li ion and a Na ion. The present invention allows a high-Re-content alloy film usable as a corrosion-resistant alloy coating for a high-temperature component or the like to be formed through an electroplating process using an aqueous solution, so as to provide heat/corrosion resistances to the component, even if it has a complicated shape, in a simplified manner at a low cost.
    Type: Application
    Filed: January 17, 2003
    Publication date: September 1, 2005
    Inventors: Toshio Narita, Shigenari Hayashi, Takayuki Yoshioka, Hiroshi Yakuwa, Michiaki Souma, Michihisa Fukumoto
  • Method for forming Re-Cr alloy film through electroplating process using bath containing Cr(VI)
    Publication number: 20050167282
    Abstract: Disclosed is a method for forming a Re—Cr alloy film consisting of Re in the range of 60 to 90% by atomic composition. The method comprises performing an electroplating process using an electroplating bath containing an aqueous solution which includes a perrhenate ion and a chromium (IV) ion. The present invention allows a Re—Cr alloy film usable as a corrosion-resistant alloy coating for a high-temperature component or the like to be formed through an electroplating process using an aqueous solution, so as to provide heat/corrosion resistances to the component, even if it has a complicated shape, in a simplified manner at a low cost.
    Type: Application
    Filed: January 17, 2003
    Publication date: August 4, 2005
    Inventors: Toshio Narita, Shigenari Hayashi, Takayuki Yoshioka, Hiroshi Yakuwa, Michiaki Souma
  • Method for forming re coating film or re-cr alloy coating film through electroplating
    Publication number: 20050126922
    Abstract: Disclosed is a method for forming: a Re—Cr alloy film consisting of Re in the range of greater than 0 (zero) to less than 98% by atomic composition, and the remainder being Cr except inevitable impurities; a Re-based film consisting of 98% or more, by atomic composition, of Re, with the remainder being Cr and inevitable impurities; or a Re—Cr—Ni alloy film consisting of Re in the range of 50 to less than 98% by atomic composition, Cr in the range of 2 to less than 45% by atomic composition, and the remainder being Ni except inevitable impurities. The method comprises performing an electroplating process using an electroplating bath containing an aqueous solution which includes a perrhenate ion and a chromium (III) ion.
    Type: Application
    Filed: January 17, 2003
    Publication date: June 16, 2005
    Inventors: Toshio Narita, Shigenari Hayashi, Takayuki Yoshioka, Hiroshi Yakuwa, Michiaki Souma