Patents by Inventor David M. Villarreal

David M. Villarreal 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).

  • Charger
    Patent number: D926128
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: July 27, 2021
    Assignee: WELCH ALLYN, INC.
    Inventors: David G. Perkins, Sean R. Karla, Timothy R. Fitch, David M. Villarreal, Michael Suits, Timothy Braun, Robert S. Englert
  • Charger
    Patent number: D958735
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: July 26, 2022
    Assignee: WELCH ALLYN, INC.
    Inventors: David G. Perkins, Sean R. Karla, Timothy R. Fitch, David M. Villarreal, Michael Suits, Timothy Braun, Robert S. Englert