Patents Assigned to Sanyo-Denki Kabushikigaisha
  • Process for preparing non-amalgamated zinc alloy powder for alkali dry cells
    Patent number: 5296267
    Abstract: Non-amalgamated zinc alloy powder is prepared by admixing zinc alloy powder with a predetermined amount of indium and heating the resulting mixture at temperature ranging from 160.degree. C. to 200.degree. C. in inert gas atmosphere.
    Type: Grant
    Filed: July 12, 1991
    Date of Patent: March 22, 1994
    Assignees: Toho-Aen Kabushikigaisha, Sanyo-Ekuseru Kabushikigaisha, Sanyo-Denki Kabushikigaisha
    Inventors: Kinya Tada, Masaaki Kurimura, Mutsumi Yano, Eiichiro Mieno, Wataru Sekiguchi, Junzo Nakagawa, Takanori Akazawa
  • Zinc alkaline cells
    Patent number: 5209995
    Abstract: A zinc alkaline cell is formed by using an anode active material which contains a non-amalgamated zinc alloy powder having a bulk specific gravity ranging from approximately 2.90 to 3.50 (grams per cm.sup.3) and containing a predetermined amount of indium coated on a surface of the non-amalgamated zinc alloy powder containing a predetermined amount of aluminum and/or a predetermined amount of calcium as a zinc alloy powder component, other than unavoidable impurities. The zinc alkaline cell can achieve corrosive resistance and discharge performance as a cell and it is comparable with cells formed by using amalgamated zinc alloy powder which has been practically employed.
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: May 11, 1993
    Assignees: Sanyo-Denki Kabushikigaisha, Sanyo-Ekuseru Kabushikigaisha, Toho-Aen Kanushikigaisha
    Inventors: Kinya Tada, Masaaki Kurimura, Mutsumi Yano, Eiichiro Mieno, Wataru Sekiguchi, Junzo Nakagawa, Takanori Akazawa
  • Zinc alkaline cells
    Patent number: 5198315
    Abstract: A zinc alkaline cell is formed by using an anode active material which contains a non-amalgamated zinc alloy powder having a bulk specific gravity ranging from approximately 2.90 to 3.50 (grams per cm.sup.3) and containing a predetermined amount of indium coated on a surface of the non-amalgamated zinc alloy powder containing a predetermined amount of lead or a predetermined amount of a mixture of lead with bismuth or aluminum as a zinc alloy powder component, other than unavoidable impurities. The zinc alkaline cell can achieve corrosive resistance and discharge performance as a cell and it is comparable with cells formed by using amalgamated zinc alloy powder which has been practically employed.
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: March 30, 1993
    Assignees: Sanyo-Ekuseru Kabushikigaisha, Toho-Aen Kabushikigaisha, Sanyo-Denki Kabushikigaisha
    Inventors: Kinya Tada, Masaaki Kurimura, Mutsumi Yano, Eiichiro Mieno, Wataru Sekiguchi, Junzo Nakagawa, Takanori Akazawa
  • Zinc alkaline cells
    Patent number: 5139900
    Abstract: A zinc alkaline cell is formed by using an anode active material which contains a non-amalgamated zinc alloy powder having a bulk specific gravity ranging from approximately 2.90 to 3.50 (grams per cm.sup.3) and containing a predetermined amount of indium coated on a surface of the non-amalgamated zinc alloy powder containing a predetermined amount of lead and calcium or a predetermined amount of calcium and bismuth as a zinc alloy powder component, other than unavoidable impurities. The zinc alkali cell can achieve corrosive resistance and discharge performance as a cell and it is comparable with cells formed by using amalgamated zinc alloy powder which has been practically employed.
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: August 18, 1992
    Assignees: Sanyo-Denki Kabushikigaisha, Sanyo-Ekuseru Kabushikigaisha, Toho-Aen Kabushikigaisha
    Inventors: Kinya Tada, Masaaki Kurimura, Mutsumi Yano, Eiichiro Mieno, Wataru Sekiguchi, Junzo Nakagawa, Takanori Akazawa