Patents by Inventor Levon Hovhannisyan

Levon Hovhannisyan 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).

  • Apparatus for ambient noise cancellation in PPG sensors
    Patent number: 9936885
    Abstract: Disclosed is a PPG signal measurement apparatus comprising a light source for emitting light pulses; a light sensor for receiving reflected light from the light source and generating a sensor signal; an electronic unit including a transimpedance amplifier and an ambient light cancelation unit, a first switch in a front end portion of the light sensor, a second switch in the front end portion of the light sensor, a microcontroller in communication with the light source, the light sensor, and the ambient light cancellation unit.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: April 10, 2018
    Assignee: Sensogram Technologies, Inc.
    Inventors: Vahram Mouradian, Levon Hovhannisyan, Armen Poghosyan