Patents by Inventor Zi Jun Song

Zi Jun Song 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).

  • Keyboard with elevated keys
    Patent number: D695292
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: December 10, 2013
    Assignee: Logitech Europe S.A.
    Inventors: Olivier Dumont, Laurent Steiner, Marten Helwig, Zi Jun Song
  • Keyboard with elevated keys
    Patent number: D695293
    Type: Grant
    Filed: June 15, 2012
    Date of Patent: December 10, 2013
    Assignee: Logitech Europe S.A.
    Inventors: Olivier Dumont, Laurent Steiner, Marten Helwig, Zi Jun Song