Patents by Inventor Sohab Sarfraz

Sohab Sarfraz 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).

  • Thermal conductivity sensing device, methods for operation and uses of the same
    Patent number: 10408802
    Abstract: A thermal conductivity sensing device (1) is disclosed, along with a method for operation of the thermal conductivity sensing device and use of the thermal conductivity sensing device in a system for gas chromatography and a method of carrying out gas chromatography. The thermal conductivity sensing device is for use in sensing one or more gaseous components in a flowing gaseous environment. The device has a first sensor (4B) and a second sensor (4A) for exposure to the same flowing gaseous environment (G). The first sensor has an associated flow altering means (20) to affect gas flow at least at part of the surface of the first sensor, to be different to gas flow at the surface of the second sensor. Each sensor provides an output relating to heat transfer between a surface of the sensor and the gaseous environment. The device is operable to compare outputs of the first and second sensors. The sensor is able to reduce the effects of bulk convection of the flowing gas on thermal conductivity measurements.
    Type: Grant
    Filed: November 27, 2015
    Date of Patent: September 10, 2019
    Assignee: Cambridge Enterprise Limited
    Inventors: Vasant Ramachandran Kumar, Sohab Sarfraz, Florin Udrea
  • Thermal conductivity sensing device, Methods for operation and uses of the Same
    Publication number: 20170363589
    Abstract: A thermal conductivity sensing device (1) is disclosed, along with a method for operation of the thermal conductivity sensing device and use of the thermal conductivity sensing device in a system for gas chromatography and a method of carrying out gas chromatography. The thermal conductivity sensing device is for use in sensing one or more gaseous components in a flowing gaseous environment. The device has a first sensor (4B) and a second sensor (4A) for exposure to the same flowing gaseous environment (G). The first sensor has an associated flow altering means (20) to affect gas flow at least at part of the surface of the first sensor, to be different to gas flow at the surface of the second sensor. Each sensor provides an output relating to heat transfer between a surface of the sensor and the gaseous environment. The device is operable to compare outputs of the first and second sensors. The sensor is able to reduce the effects of bulk convection of the flowing gas on thermal conductivity measurements.
    Type: Application
    Filed: November 27, 2015
    Publication date: December 21, 2017
    Inventors: Vasant Ramachandran Kumar, Sohab Sarfraz, Florin Udrea