Patents by Inventor Nuri A. Zreiba

Nuri A. Zreiba 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).

  • AgO cathode battery
    Patent number: 6001508
    Abstract: Solid divalent silver oxide is reacted in hot aqueous alkaline reaction medium with a solid bismuth component and a reducing agent. The reaction product comprises a novel compound containing silver, bismuth, and oxygen, which is used in making cathode pellets for use in alkaline electrochemical cells. The cells exhibit low internal impedance and substantially single voltage discharge characteristic of monovalent silver oxide while retaining a significant portion of the coulombic capacity a of divalent silver cathode, without toxicity problems attendant cathodes containing lead and/or cadmium. Particulate cathode materials are disclosed comprising an intermediate layer of AgO.sub.2 disposed between a core of AgO and an outer layer comprising silver and bismuth moieties.
    Type: Grant
    Filed: March 27, 1997
    Date of Patent: December 14, 1999
    Assignee: Rayovac Corporation
    Inventors: Joseph Lynn Passaniti, El-Sayed A. Megahed, Nuri A. Zreiba
  • Method for producing a cathode material containing silver and bismuth
    Patent number: 5589109
    Abstract: Solid divalent silver oxide is reacted in hot aqueous alkaline reaction medium with a solid bismuth component and a reducing agent. The reaction product comprises a novel compound containing silver, bismuth, and oxygen, which is used in making cathode pellets for use in alkaline electrochemical cells. The cells exhibit low internal impedance and substantially single voltage discharge characteristic of monovalent silver oxide while retaining a significant portion of the coulombic capacity a of divalent silver cathode, without toxicity problems attendant cathodes containing lead and/or cadmium.
    Type: Grant
    Filed: February 10, 1995
    Date of Patent: December 31, 1996
    Assignee: Rayovac Corporation
    Inventors: Joseph L. Passaniti, El-Sayed A. Megahed, Nuri A. Zreiba
  • AgO battery, and material
    Patent number: 5389469
    Abstract: Solid divalent silver oxide is reacted in hot aqueous alkaline reaction medium with a solid bismuth component and a reducing agent. The reaction product comprises a novel compound containing silver, bismuth, and oxygen, which is used in making cathode pellets for use in alkaline electrochemical cells. The cells exhibit low internal impedance and substantially single voltage discharge characteristic of monovalent silver oxide while retaining a significant portion of the coulombic capacity a of divalent silver cathode, without toxicity problems attendant cathodes containing lead and/or cadmium.
    Type: Grant
    Filed: June 14, 1993
    Date of Patent: February 14, 1995
    Assignee: Rayovac Corporation
    Inventors: Joseph L. Passaniti, El-Sayed A. Megahed, Nuri A. Zreiba