Patents by Inventor Harumi Magusa

Harumi Magusa 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).

  • Production of aluminum impact extrusions
    Patent number: 4243438
    Abstract: The present invention relates to a method of producing an aluminum impact extrusion by preparing a slug of an aluminum based alloy made of aluminum and at least one element selected from cobalt and nickel, whereas the amounts of the cobalt and nickel are each present in amounts of 3% by weight or less and wherein the total amount of cobalt and nickel is 0.15% by weight or more; impact extruding the slug by using an impact extrusion press, and then annealing the extruded product. The present invention also involves an aluminum base alloy consisting of the ingredients mentioned above useful for impact extrusion and an aluminum collapsible tube prepared by impact extruding a slug stud of an aluminum base alloy of the type described above.
    Type: Grant
    Filed: July 18, 1979
    Date of Patent: January 6, 1981
    Assignees: Sumitomo Aluminium Smelting Co., Ltd., Nihon Atsuen Kogyo K.K.
    Inventors: Kiyomi Yanagida, Harumi Magusa, Akihiko Takahashi