Patents by Inventor Koichi Ohbori

Koichi Ohbori 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).

  • Extruded corrosion resistant structural aluminum alloy
    Patent number: 4231817
    Abstract: A corrosion resistant structural aluminum alloy excellent in extrudability which consists essentially of, in weight percentage:Magnesium from 0.45 to 0.98%,Silicon from 0.3 to 0.8%,Zinc from 0.5 to 2.5%,and, the balance aluminum and incidental impurities; said alloy including a corrosion resistant structural aluminum alloy excellent in extrudability further additionally containing, as required, at least one element selected from the group consisting of, in weight percentage:Copper from 0.04 to 0.30%,Zirconium from 0.04 to 0.25%,Chromium from 0.04 to 0.30%, andManganese from 0.04 to 0.25%.
    Type: Grant
    Filed: November 9, 1978
    Date of Patent: November 4, 1980
    Assignee: Mitsubishi Kinzoku Kabushiki Kaisha
    Inventors: Yo Takeuchi, Koichi Ohbori, Masabumi Hatsushika, Shinichi Komori