Patents by Inventor Frank Stanley Holland

Frank Stanley Holland 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 of producing metal powder
    Patent number: 4028199
    Abstract: A metal powder e.g. copper or zinc, is produced from a dilute aqueous solution of the metal by subjecting the dilute aqueous solution to electrolysis in a cell having a rotating cylinder cathode and in accordance with the equation:I = KCV.sup.xwhere I is the current density, K is a constant for a given cell, C is the concentration of metal ion in aqueous solution, V is the peripheral velocity of the rotating cylinder cathode and x = 0.7 to 1.0. A diaphragm cell is preferably used. Dilute aqueous solutions treated include mining liquors and viscose rayon plant effluent.This invention relates to metals and is particularly concerned with the recovery or extraction of metals in powder form by electrolytic means.
    Type: Grant
    Filed: July 30, 1975
    Date of Patent: June 7, 1977
    Assignee: National Development Research Corporation
    Inventor: Frank Stanley Holland