Patents by Inventor Francois Le Her

Francois Le Her 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).

  • Device for transmission of sound with selective filtering for insertion in the outer auditory canal
    Patent number: 5832094
    Abstract: An earplug for selective filtering of sound transmission into the external auditory canal. A tube extends through the plug and opens into a space defined by the end piece and the eardrum of a user. The opposite end of the tube is connected to an acoustic valve which is partially or wholly inserted in the plug and contains one or more resonance cavities.
    Type: Grant
    Filed: April 1, 1994
    Date of Patent: November 3, 1998
    Inventor: Francois Le Her