Patents by Inventor Hisaji Shimomura

Hisaji Shimomura 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).

  • Process for producing zinc or zinc alloy powder for battery
    Publication number: 20040170897
    Abstract: An alkaline battery having as an anode a zinc or zinc alloy powder obtained by dropping molten zinc or a molten zinc alloy to form a molten metal droplets stream and striking an atomizing medium jet emitted from a nozzle against the molten metal stream at right angles to atomize the molten zinc or the molten zinc alloy, wherein two or more the nozzles are arranged in parallel to each other, the orifice of each of the nozzles has a V-shaped, U-shaped, X-shaped or arc-shaped cross-section, the atomizing medium is air or an inert gas, two or more the molten metal streams have at least two different flow rates selected from a range 0.04 to 025 kg/sec, and two or more of the atomizing medium jets have at least two different atomizing pressures selected from a range 4 to 9 kg/cm2.
    Type: Application
    Filed: March 5, 2004
    Publication date: September 2, 2004
    Applicants: MITSUI MINING & SMELTING COMPANY, LTD, MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Akira Oyama, Tadayoshi Odahara, Seiji Fuchino, Mitsuo Shinoda, Hisaji Shimomura
  • Process for producing zinc or zinc alloy powder for battery
    Patent number: 6746509
    Abstract: A process of producing a zinc or zinc alloy powder (4) for batteries which comprises dropping molten zinc or a molten zinc alloy to form a molten metal droplets stream (1) and striking an atomizing medium jet (3) emitted from a nozzle (2) against the molten metal stream (1) at right angles to atomize the molten zinc or the molten zinc alloy, wherein two or more the nozzles are arranged in parallel to each other, the orifice of each of the nozzles has a V-shaped, U-shaped, X-shaped or arc-shaped cross-section, the atomizing medium is air or an inert gas, two or more the molten metal streams have at least two different flow rates selected from a range 0.04 to 0.25 kg/sec, and two or more the atomizing medium jets have at least two different atomizing pressures selected from a range 4 to 9 kg/cm2.
    Type: Grant
    Filed: September 11, 2002
    Date of Patent: June 8, 2004
    Assignees: Mitsui Mining & Smelting Company, Ltd., Matsushita Electric Industrial Co., Ltd.
    Inventors: Akira Oyama, Tadayoshi Odahara, Seiji Fuchino, Mitsuo Shinoda, Hisaji Shimomura
  • PROCESS FOR PRODUCING ZINC OR ZINC ALLOY POWDER FOR BATTERY
    Publication number: 20040045404
    Abstract: A process of producing a zinc or zinc alloy powder (4) for batteries which comprises dropping molten zinc or a molten zinc alloy to form a molten metal droplets stream (1) and striking an atomizing medium jet (3) emitted from a nozzle (2) against the molten metal stream (1) at right angles to atomize the molten zinc or the molten zinc alloy, wherein two or more the nozzles are arranged in parallel to each other, the orifice of each of the nozzles has a V-shaped, U-shaped, X-shaped or arc-shaped cross-section, the atomizing medium is air or an inert gas, two or more the molten metal streams have at least two different flow rates selected from a range 0.04 to 0.25 kg/sec, and two or more the atomizing medium jets have at least two different atomizing pressures selected from a range 4 to 9 kg/cm2.
    Type: Application
    Filed: September 11, 2002
    Publication date: March 11, 2004
    Inventors: Akira Oyama, Tadayoshi Odahara, Seiji Fuchino, Mitsuo Shinoda, Hisaji Shimomura