Patents by Inventor Fredrik M. Stenmark

Fredrik M. Stenmark 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).

  • SPEAKERBOX
    Publication number: 20110158448
    Abstract: An electro-acoustic communications unit (20) may include an acoustic driver (22) which, when operated, emits acoustic waves in two directions. A hermetically sealed container (24) attached to the acoustic driver may include a gas other than air. The gas may transport acoustic waves generated by the acoustic driver.
    Type: Application
    Filed: March 4, 2011
    Publication date: June 30, 2011
    Applicant: SONY ERICSSON MOBILE COMMUNICATIONS AB
    Inventors: Fredrik M. STENMARK, Carl STÂHL
  • Speakerbox
    Patent number: 7925035
    Abstract: An electro-acoustic communications unit (20) may include an acoustic driver (22) which, when operated, emits acoustic waves in two directions. A hermetically sealed container (24) attached to the acoustic driver may include a gas other than air. The gas may transport acoustic waves generated by the acoustic driver.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: April 12, 2011
    Assignee: Sony Ericsson Mobile Communications AB
    Inventors: Fredrik M. Stenmark, Carl Ståhl