Patents by Inventor Alfredo Alvarez-Calderon

Alfredo Alvarez-Calderon 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).

  • Sun shade cap with side view windows
    Patent number: D530061
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: October 17, 2006
    Inventor: Alfredo Alvarez-Calderon
  • Focus vision cap
    Patent number: D530487
    Type: Grant
    Filed: February 22, 2005
    Date of Patent: October 24, 2006
    Inventor: Alfredo Alvarez-Calderon