Patents by Inventor Nael AL AHMAD

Nael AL AHMAD 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 and method for determining the concentration of a vapor by means of an oscillating body sensor
    Patent number: 10267768
    Abstract: A device and a method determines the concentration of a vapor in a volume, in particular for determining or controlling the mass flow of the vapor being conveyed through the volume by a carrier gas. The device comprises a sensor, which supplies a sensor signal that is dependent on the concentration or partial pressure of the vapor. The sensor has an oscillatory body that can be brought to oscillation, the oscillation frequency of which is influenced by a mass accumulation formed on a surface of the oscillating body by the condensed vapor. The oscillating body has a temperature control unit, by means of which the oscillating body can be brought to a temperature below the condensation temperature of the vapor. An evaluation unit determines the concentration or the partial pressure of the vapor from the temporal change of the oscillator frequency.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: April 23, 2019
    Assignee: AIXTRON SE
    Inventors: Birgit Irmgard Beccard, Claudia Cremer, Karl-Heinz Trimborn, Michael Long, Andy Eichler, Nael Al Ahmad
  • DEVICE AND METHOD FOR DETERMINING THE CONCENTRATION OF A VAPOR BY MEANS OF AN OSCILLATING BODY SENSOR
    Publication number: 20170016859
    Abstract: A device and a method determines the concentration of a vapor in a volume, in particular for determining or controlling the mass flow of the vapor being conveyed through the volume by a carrier gas. The device comprises a sensor, which supplies a sensor signal that is dependent on the concentration or partial pressure of the vapor. The sensor has an oscillatory body that can be brought to oscillation, the oscillation frequency of which is influenced by a mass accumulation formed on a surface of the oscillating body by the condensed vapor. The oscillating body has a temperature control unit, by means of which the oscillating body can be brought to a temperature below the condensation temperature of the vapor. An evaluation unit determines the concentration or the partial pressure of the vapor from the temporal change of the oscillator frequency.
    Type: Application
    Filed: February 23, 2015
    Publication date: January 19, 2017
    Inventors: Birgit Irmgard BECCARD, Claudia CREMER, Karl-Heinz TRIMBORN, Michael LONG, Andy EICHLER, Nael AL AHMAD