Patents by Inventor Kobuyuki Koura

Kobuyuki Koura 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).

  • Metallic sulfide additives for positive electrode material within a secondary electrochemical cell
    Patent number: 3992222
    Abstract: An improved active material for use within the positive electrode of a secondary electrochemical cell includes a mixture of iron disulfide and a sulfide of a polyvalent metal. Various metal sulfides, particularly sulfides of cobalt, nickel, copper, cerium and manganese, are added in minor weight proportion in respect to iron disulfide for improving the electrode performance and reducing current collector requirements.
    Type: Grant
    Filed: July 15, 1975
    Date of Patent: November 16, 1976
    Assignee: The United States of America as represented by the United States Energy Research and Development Administration
    Inventors: William J. Walsh, Charles C. McPheeters, Neng-ping Yao, Kobuyuki Koura