Patents by Inventor Gabriela R. Zelter

Gabriela R. Zelter 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).

  • Cobalt oxide passivation of nickel battery electrode substrates
    Patent number: 5248510
    Abstract: A nickel electrode (14) for use in a storage cell (10) includes a porous nickel substrate (50, 52) and a cobalt oxide passivation layer (56) on the nickel substrate (50, 52). A mass of nickel hydroxide/oxide (54) is impregnated within the pores of the substrate (50, 52). The cobalt oxide layer (56) is preferably deposited on the nickel substrate (50, 52) by contacting the substrate (50, 52) with an aqueous solution of cobalt nitrate, removing the excess solution, and heating the substrate in an oxygen-containing environment to form cobalt oxide. The cobalt oxide layer (56) at the surface of the substrate (50, 52) acts as a passivation layer to prevent corrosion of the nickel substrate (50, 52).
    Type: Grant
    Filed: February 18, 1992
    Date of Patent: September 28, 1993
    Assignee: Hughes Aircraft Company
    Inventors: Hong S. Lim, David F. Pickett, Gabriela R. Zelter