Patents by Inventor Terry Irwin Goldman

Terry Irwin Goldman 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).

  • Biological filter attachment for aquarium hang-on filters
    Patent number: 6706176
    Abstract: A biological filter for an aquarium hang-on filter that attaches to the outflow of the aquarium hang-on filter. The biological filter includes a multiplicity of convoluted plastic channels over which water exiting the aquarium hang-on filter cascades and on the surfaces of which aerobic bacteria can form.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: March 16, 2004
    Assignee: Penn-Plax, Inc.
    Inventor: Terry Irwin Goldman