Patents by Inventor David R. Castro

David R. Castro 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).

  • Mixer
    Patent number: D540113
    Type: Grant
    Filed: November 9, 2004
    Date of Patent: April 10, 2007
    Assignee: Premark FEG L.L.C.
    Inventors: Ellis G. Short, Neal H. Blackburn, David R. Castro