Patents by Inventor Barbara Jefferies-Nakamura

Barbara Jefferies-Nakamura 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).

  • Thin metal electrode for AMTEC
    Patent number: 4835071
    Abstract: An electrode having higher power output is formed of a thin, porous film (less than 1 micrometer) applied to a beta-alumina solid electrolyte (BASE). The electrode includes an open grid, current collector such as a series of thin, parallel, grid lines applied to the thin film and a plurality of cross-members such as loop of metal wire surrounding the BASE tube. The loops are electrically connected by a bus wire. The overall impedance of the electrode considering both the contributions from the bulk BASE and the porous electrode BASE interface is low, about 0.5 OHM/cm.sup.2 and power densities of over 0.3 watt/cm.sup.2 for extended periods.
    Type: Grant
    Filed: August 6, 1987
    Date of Patent: May 30, 1989
    Assignee: California Institute of Technology
    Inventors: Roger M. Williams, Bob L. Wheeler, Barbara Jefferies-Nakamura, James L. Lamb, C. Perry Bankston, Terry Cole