Patents by Inventor Raymond J. Powell

Raymond J. Powell 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).

  • Patent number: 5030523
    Abstract: A secondary electrochemical cell is made by(i) assembling a solid state electrochemical cell having an anode containing an alkali metal such as lithium as active anode material; a solid alkali metal ion conducting electrolyte, for example a polymer electrolyte comprising a complex of a solid polymer (e.g. poly(ethylene oxide)) and an alkali metal salt (e.g. LiClO.sub.4), which polymer is capable of forming donor-acceptor type bonds with alkali metal ions; and a cathode containing manganese (IV) oxide as active cathode material; and(ii) discharging the cell under conditions, e.g. of elevated temperature, such that the cathode material is transformed in situ into a rechargeable cathode material which may, for example be LiMn.sub.2 O.sub.4.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: July 9, 1991
    Assignee: United Kingdom Atomic Energy Authority
    Inventors: Robin J. Neat, Raymond J. Powell