Patents by Inventor Rehan Azfar Ashraf

Rehan Azfar Ashraf 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).

  • Level switches
    Patent number: 10571329
    Abstract: The invention describes a vibrating fork point level switch with multiple switching points.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: February 25, 2020
    Assignee: ROSEMOUNT MEASUREMENT LIMITED
    Inventors: Tadewos Tzegazeab, Rehan Azfar Ashraf, Gregory Michael Leach
  • FIELD DEVICE FOR DETERMINING FLUID PROPERTIES COMPRISING A FLUID SENSOR, A TEMPERATURE SENSOR AND A PROCESSING FACILITY MOUNTED ON A FLUID VESSEL
    Publication number: 20180164252
    Abstract: The invention provides a field device configured to be fitted through a single mounting aperture in a vessel. The device preferably includes a vibrating fork and a temperature sensor, the signals from which are processed within the device to provide an output indicative of whether a property of a medium in contact with the device is above or below a threshold. This output may be communicated wirelessly to a remote location. Other features are described.
    Type: Application
    Filed: May 18, 2016
    Publication date: June 14, 2018
    Applicant: Rosemount Measurement Limited
    Inventors: Jeffery Allan Sears, Gregory Michael Leach, Marianne Elizabeth Williams, Rehan Azfar Ashraf
  • IMPROVEMENTS IN OR RELATING TO LEVEL SWITCHES
    Publication number: 20180136030
    Abstract: The invention describes a vibrating fork point level switch with multiple switching points.
    Type: Application
    Filed: May 6, 2016
    Publication date: May 17, 2018
    Inventors: Tadewos Tzegazeab, Rehan Azfar Ashraf, Gregory Michael Leach