Patents by Inventor Annemare de Kocknee Steynberg

Annemare de Kocknee Steynberg 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).

  • Electrolyte for an electrochemical cell, and an electrochemical cell including the electrolyte
    Patent number: 4287271
    Abstract: An electrolyte for use in an electrochemical cell is disclosed of the alkali metal-aluminium-halide type. The electrolyte has a melting point below 140.degree. C. at atmospheric pressure and conforms with the stoichiometric productMAlX.sub.4whereinM represents lithium cations, a mixture of lithium and potassium cations or a mixture of sodium and potassium cations; andX represents a mixture of chloride and fluoride anions.A method of reducing the melting point of a sodium-aluminium-chloride or lithium-aluminium-chloride electrolyte by doping it with a potassium fluoride, sodium fluoride, or lithium fluoride, to obtain said electrolyte with a melting point below 140.degree. C. is disclosed, as are various electrochemical cells employing the product electrolyte.
    Type: Grant
    Filed: August 20, 1980
    Date of Patent: September 1, 1981
    Assignee: The South African Inventions Development Corporation
    Inventors: Johan Coetzer, Margaretha J. Nolte, Annemare de Kocknee Steynberg