Patents by Inventor Verdun H. Farnsworth

Verdun H. Farnsworth 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).

  • Rare earth and aluminium containing galvanizing bath and method
    Patent number: 5096666
    Abstract: A galvanizing bath having a composition of about 5 ppm to about 100 ppm by weight aluminum, and rare earth elements by weight rated at zero and not exceeding about 5 ppm. In the method a galvanizing bath composition is maintained according to the foregoing in which aluminum and rare earth materials are added to the bath at a ratio greater than the ratio of the selected concentrations of rare earth materials and aluminum in the galvanizing bath.
    Type: Grant
    Filed: September 5, 1989
    Date of Patent: March 17, 1992
    Inventors: Verdun H. Farnsworth, Nigel T. Evans
  • Galvanizing fluxes
    Patent number: 4911764
    Abstract: A chloride based galvanizing flux containing at least zinc chloride, ammonium chloride and a rare earth chloride. The rare earth chloride comprises between substantially 500 parts per million and substantially 10% by weight of said flux.
    Type: Grant
    Filed: August 17, 1988
    Date of Patent: March 27, 1990
    Inventor: Verdun H. Farnsworth