Patents by Inventor Tadaharu Kido

Tadaharu Kido 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).

  • Cutter composed of Ni-Cr alloy
    Patent number: 7740719
    Abstract: A cutter is composed of a Ni—Cr alloy containing from 32 to 44 mass percent of Cr, from 2.3 to 6.0 mass percent of Al, the balance being Ni, impurities, and additional trace elements and having a Rockwell C hardness of 52 or more. This Ni—Cr alloy provides a cutter produced with a superior workability and by a significantly simplified process, having a low deterioration in the hardness even when heated in use, having excellent corrosion resistance and low-temperature embrittlement resistance, and satisfactorily maintaining the cutting performance for a long time.
    Type: Grant
    Filed: May 14, 2003
    Date of Patent: June 22, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomohisa Arai, Takashi Rokutanda, Tadaharu Kido
  • Cutter composed of Ni-Cr-Al Alloy
    Patent number: 7682474
    Abstract: A cutter is composed of a Ni—Cr—Al alloy containing from 32 to 44 mass percent of Cr, from 2.3 to 6.0 mass percent of Al, the balance being Ni, impurities, and additional trace elements and having a Rockwell C hardness of 52 or more. This Ni—Cr—Al alloy provides a cutter produced with a superior workability and by a significantly simplified process, having a low deterioration in the hardness even when heated in use, having excellent corrosion resistance and low-temperature embrittlement resistance, and satisfactorily maintaining the cutting performance for a long time.
    Type: Grant
    Filed: August 4, 2008
    Date of Patent: March 23, 2010
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Tomohisa Arai, Takashi Rokutanda, Tadaharu Kido
  • CUTTER COMPOSED OF NI-CR ALLOY
    Publication number: 20080302449
    Abstract: A cutter is composed of a Ni—Cr alloy containing from 32 to 44 mass percent of Cr, from 2.3 to 6.0 mass percent of Al, the balance being Ni, impurities, and additional trace elements and having a Rockwell C hardness of 52 or more. This Ni—Cr alloy provides a cutter produced with a superior workability and by a significantly simplified process, having a low deterioration in the hardness even when heated in use, having excellent corrosion resistance and low-temperature embrittlement resistance, and satisfactorily maintaining the cutting performance for a long time.
    Type: Application
    Filed: August 4, 2008
    Publication date: December 11, 2008
    Inventors: Tomohisa ARAI, Takashi Rokutanda, Tadaharu Kido
  • Ni-cr alloy cutting tool
    Publication number: 20050167010
    Abstract: A cutter is composed of a Ni—Cr alloy containing from 32 to 44 mass percent of Cr, from 2.3 to 6.0 mass percent of Al, the balance being Ni, impurities, and additional trace elements and having a Rockwell C hardness of 52 or more. This Ni—Cr alloy provides a cutter produced with a superior workability and by a significantly simplified process, having a low deterioration in the hardness even when heated in use, having excellent corrosion resistance and low-temperature embrittlement resistance, and satisfactorily maintaining the cutting performance for a long time.
    Type: Application
    Filed: May 14, 2003
    Publication date: August 4, 2005
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Tomohisa Arai, Takashi Rokutanda, Tadaharu Kido