Patents by Inventor Harald Volden

Harald Volden 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).

  • Device for lowering and raising a fish rearing unit
    Patent number: 5845602
    Abstract: A float collar, comprising inner and outer float rings mounts the fish rearing unit for selective raising and lowering utilizing valve controlled air and water inlets and outlets leading to internal chambers within the float rings arranged symmetrically relative to a diametric axis of the float collar.
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: December 8, 1998
    Inventors: Charles Kaarstad, Harald Volden