Patents by Inventor John Vainrub

John Vainrub 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).

  • Blade for axial fan
    Patent number: 5437541
    Abstract: A blade for use in an axial fan includes a plurality of vanes which each have a winglet formed on their front face to increase the air flow of the fan at a given blade velocity.
    Type: Grant
    Filed: December 30, 1993
    Date of Patent: August 1, 1995
    Inventor: John Vainrub