Patents by Inventor Michihiro Yoda

Michihiro Yoda 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 of manufacturing aluminum alloy sheets excellent in hot formability
    Patent number: 4699673
    Abstract: A method of manufacturing an aluminum alloy sheet excellent in hot formability. A hot rolled plate of an aluminum alloy is cold rolled into a cold rolled sheet with a reduction ratio of at least 20%. The cold rolled sheet thus obtained is subjected to intermediate heat treatment wherein it is heated to a temperature of 420.degree. to 560.degree. C., at a heating rate of at least 2.degree. C. per second while it is heated from 150.degree. to 350.degree. C., and the sheet is then cooled to room temperature, at a cooling rate of at least 1.degree. C. per second while it is cooled from 420.degree. to 150.degree. C. The resulting heat treated sheet is subjected to final cold rolling with a reduction ratio of 15 to 60%.
    Type: Grant
    Filed: June 25, 1985
    Date of Patent: October 13, 1987
    Assignee: Mitsubishi Aluminium Kabushiki Kaisha
    Inventors: Yasuo Kobayashi, Michihiro Yoda, Hiromi Goto, Yo Takeuchi