Patents by Inventor Kai Leppälahti

Kai Leppälahti 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).

  • Earphone or microphone
    Patent number: D460436
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: July 16, 2002
    Assignee: Savox Solutions OY AB (LTD)
    Inventors: Mats Björklund, Kai Leppälahti
  • Microphone
    Patent number: D492289
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: June 29, 2004
    Assignee: Savox Communications Oy Ab (Ltd)
    Inventors: Juha Lätti, Heikki Hietanen, Kai Leppälahti