Patents by Inventor Fred Koenecke

Fred Koenecke 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).

  • Headphones
    Patent number: 7639832
    Abstract: There is provided a wireless headphone having charging contacts in the headphone band and at least one magnet in the headphone band. There is also provided a charging station for a corresponding wireless headphone with bars as an electrical feed line for charge contacting of a wireless headphone.
    Type: Grant
    Filed: January 10, 2005
    Date of Patent: December 29, 2009
    Assignee: Sennheiser electronic GmbH & Co. KG
    Inventors: Wolfgang Mann, Axel Grell, Fred Koenecke
  • Headphones
    Publication number: 20080049963
    Abstract: There is provided a wireless headphone having charging contacts in the headphone band and at least one magnet in the headphone band. There is also provided a charging station for a corresponding wireless headphone with bars as an electrical feed line for charge contacting of a wireless headphone.
    Type: Application
    Filed: January 10, 2005
    Publication date: February 28, 2008
    Applicant: SENNHEISER ELECTRONIC GMBH & CO. KG
    Inventors: Wolfgang Mann, Axel Grell, Fred Koenecke
  • Headphone container
    Patent number: D540311
    Type: Grant
    Filed: June 14, 2004
    Date of Patent: April 10, 2007
    Assignee: Sennheiser electronic GmbH & Co. KG
    Inventor: Fred Koenecke
  • Rechargeable battery
    Patent number: D582341
    Type: Grant
    Filed: September 26, 2006
    Date of Patent: December 9, 2008
    Assignee: Sennheiser electronic GmbH & Co. KG
    Inventor: Fred Koenecke