Patents by Inventor Malcolm John Dewar

Malcolm John Dewar 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).

  • Method and apparatus for continuously mixing battery pastes
    Patent number: 10177369
    Abstract: A process and apparatus for continuously mixing and applying paste to battery grids for use in lead-acid battery systems, in which particulate lead oxide, water and sulphuric acid are reacted in an elongated mixer having a mixing to conveying ratio of about 65:35 to 80:20 with controlled reaction temperature for an exit product temperature in the range of above 60° C. to about 80° C. Additives including reinforcing fibers can be added in an amount up to 0.6 wt % of the lead oxide and carbon and graphite powder can be added in an amount up to 6 wt % of the lead oxide.
    Type: Grant
    Filed: June 20, 2007
    Date of Patent: January 8, 2019
    Assignee: MITEK HOLDINGS, INC.
    Inventors: Albert M. Vincze, Douglas G. Clark, Victor Nasri Saleh, Malcolm John Dewar, Robert W. Fritts