Patents by Inventor John Francis Masek

John Francis Masek 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).

  • Audio filter device for electronic interference with audio signals
    Patent number: 10340872
    Abstract: The subject matter disclosed herein generally relates to audio signal filtering components for an audio signal as it passes through an audio cable from source to loudspeaker, but receives interference from a nearby electrical current. This electrical current includes those from electronics commonly found in cell phones, electrical lines in vehicles, or electrical lines from any nearby source that emits a magnetic field that is then picked up by the audio cable and produces a high-pitched ringing sound. The apparatus described audibly reduces the interference from this electrical current.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: July 2, 2019
    Inventor: John Francis Masek
  • Cable tester
    Patent number: D800588
    Type: Grant
    Filed: June 6, 2016
    Date of Patent: October 24, 2017
    Inventor: John Francis Masek