Patents by Inventor Alex Pollak

Alex Pollak 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).

  • Earphone (surround sound) speaker
    Patent number: 6356644
    Abstract: A headphone system that including casings that each contain at least two speakers. Each speaker in each casing is able to produce sounds of different frequencies and/or coming from separate channels. The headphone set may include an electrical device for separating one or more individual signals into two or more signals. The electrical device may be located directly on the headset.
    Type: Grant
    Filed: February 20, 1998
    Date of Patent: March 12, 2002
    Assignees: Sony Corporation, Sony Electronics, Inc.
    Inventor: Alex Pollak