Patents by Inventor Sidney Hansen

Sidney Hansen 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).

  • Weight training aid
    Publication number: 20080108457
    Abstract: A novel swing speed training weight that is a composite plastic helical coil adapted to slidably attach to a bat used in the sport of baseball and softball.
    Type: Application
    Filed: January 2, 2008
    Publication date: May 8, 2008
    Inventors: Sidney Hansen, Chad Hansen