Patents by Inventor Torstein Valand

Torstein Valand 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).

  • Manganese dioxide cathode
    Patent number: 3939010
    Abstract: Improved cathodes for use in acid Leclanche cells, particularly of the reserve type where sulphuric acid is added to activate the cell prior to use, are constructed using an anodized lead current collector which possesses advantages over other materials in being less bulky than carbon, cheaper than platinum and giving a steadier output voltage than un-anodized lead, while still being resistant to corrosion.
    Type: Grant
    Filed: September 25, 1973
    Date of Patent: February 17, 1976
    Assignee: Her Majesty the Queen in right of Canada, as represented by the Minister of National Defence
    Inventors: John Ralph Coleman, Torstein Valand