Patents by Inventor Steven D. Julstrom

Steven D. Julstrom 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).

  • Patent number: 7206426
    Abstract: Disclosed herein is a hearing improvement device using a multi-coil coupling system and methods for operating such a device. In an embodiment according to the present invention an array microphone may be used to provide highly directional reception. The received audio signal may be filtered, amplified, and converted into a magnetic field for coupling to a telecoil in a conventional hearing aid. Multiple transmit inductors may be used to effectively couple to both in-the-ear and behind-the-ear type hearing aids, and an additional embodiment is disclosed which may be used with an earphone, for users not requiring a hearing aid.
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: April 17, 2007
    Assignee: Etymotic Research, Inc.
    Inventors: Steven D. Julstrom, Mead Killion