Patents by Inventor Brenda Dykgraaf

Brenda Dykgraaf 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).

  • Inflatable exercise device
    Publication number: 20070155601
    Abstract: An inflatable unitary construction hemispherical or dome-shaped flat-bottomed exercise device analogous to an exercise ball having a flat and relatively stable surface to improve its usefulness to people who cannot control fully round prior art exercise balls.
    Type: Application
    Filed: December 30, 2005
    Publication date: July 5, 2007
    Inventors: Brenda Dykgraaf, William Cameron
  • Abdominal exercise device
    Patent number: D546907
    Type: Grant
    Filed: December 30, 2005
    Date of Patent: July 17, 2007
    Inventors: Brenda Dykgraaf, William Cameron