Patents by Inventor Yoshinobu Komiyama

Yoshinobu Komiyama 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).

  • Aluminum alloy material having high strength and excellent formability
    Patent number: 5417919
    Abstract: There is provided an aluminum alloy sheet material having high strength as well as excellent formability, which consists essentially, by weight percent, of 4.5 to 6% Mg, 0.0005 to 1% rare earth elements, 0.001 to 0.15% Ti, 0.0001 to 0.004% B, 0.05 to 0.2% Fe, 0.05 to 0.1% Si, 0.0001 to 0.03% Be, and the balance of Al and inevitable impurities. The aluminum alloy sheet material may further contain at least one element selected from the group consisting of 0.05 to 0.3% Cu, 0.1 to 1% Zn and 0.05 to 0.2% Mn, if required.
    Type: Grant
    Filed: August 20, 1993
    Date of Patent: May 23, 1995
    Assignee: Mitsubishi Aluminum Co., Ltd.
    Inventors: Koichi Ohori, Yoshinobu Komiyama, Hiroshi Saitoh, Masahiko Miyazaki