Patents by Inventor William H. Gardner, heir

William H. Gardner, heir 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).

  • Flexible magnet
    Patent number: 5621369
    Abstract: A flexible magnetic sheet is made of a rubbery synthetic material in which magnetic ferrite particles have been embedded and which one surface of the sheet has a grid pattern of ridges and depressions. The magnetic material is magnetized so that one pole is one each surface. The magnetic lines of force are generated substantially in a plane.
    Type: Grant
    Filed: September 18, 1995
    Date of Patent: April 15, 1997
    Inventors: Harris L. Gardner, William H. Gardner, heir