Patents by Inventor Elmar Stein (né Schulze)

Elmar Stein (né Schulze) 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: 9900683
    Abstract: A headphone device comprising a surrounding ear pad and a sound generator which has a substantially rigid plate and a drive system for converting electrical signals into mechanical oscillations of the plate.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: February 20, 2018
    Assignee: Sennheiser electronic GmbH & Co. KG
    Inventors: Elmar Stein (né Schulze), André Grandt
  • HEADPHONES
    Publication number: 20160286320
    Abstract: A headphone device comprising a surrounding ear pad and a sound generator which has a substantially rigid plate and a drive system for converting electrical signals into mechanical oscillations of the plate.
    Type: Application
    Filed: October 31, 2014
    Publication date: September 29, 2016
    Applicant: Sennheiser electronic GmbH & Co., KG
    Inventors: Elmar Stein (né Schulze), André Grandt