Patents by Inventor Ana Leitão

Ana Leitão 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).

  • Anti-slip sole for a sock
    Patent number: D903293
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: December 1, 2020
    Assignee: GRIFFITHS & NIELSEN LIMITED
    Inventors: Raúl Fangueiro, Juliana Cruz, Ana Leitão, Tiago Sousa, Rute Franco