Patents by Inventor Joseph David Coburn

Joseph David Coburn 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).

  • Patent number: 6792891
    Abstract: The present invention provides a self cleaning humming bird feeder equipped to protectively store sugared nectar and contaminated feed tank from insect infestation. The feeder including a feeding cup jacketed within a contaminated feed trap emptying onto a contaminated feed holding tank, a feed reservoir and a pump for pumping nectar to the feeding cup. Cleansing of the feed cup may be accomplished by pumping and overflowing excess sugared nectar into the feed cup causing it to spill over with contaminates onto the contaminated feed trap.
    Type: Grant
    Filed: August 26, 2003
    Date of Patent: September 21, 2004
    Inventors: Joseph David Coburn, Joel Ralph Bernhardt