Patents by Inventor Kiyoharu Kuwano

Kiyoharu Kuwano 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).

  • Apparatus for recovery of metallic zinc from dross
    Patent number: 4003559
    Abstract: An apparatus for separating and recovering metallic zinc from an ash-like solid substance composed of a mixture of metallic zinc, zinc oxide and other zinc containing materials is disclosed. This apparatus comprises a saucer-like container of an inverse cone form for receiving dross and a plurality of agitating scraper plates disposed in said container to squeeze out metallic zinc from the dross, discharge means for metallic zinc and discharge means for secondary dross being mounted on an opening formed on the bottom of said cylinder.
    Type: Grant
    Filed: April 24, 1975
    Date of Patent: January 18, 1977
    Assignee: Mitsui Mining & Smelting Co., Ltd.
    Inventors: Kiyoharu Kuwano, Yukio Kanbara