Patents by Inventor Waleed Ahmed Qader

Waleed Ahmed Qader 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).

  • PIRANI PRESSURE GAUGE
    Publication number: 20090056464
    Abstract: A Pirani pressure gauge comprises a heated, coiled sensing element formed from an alloy comprising platinum and iridium, for example, 90/10 Pt/Ir. This enables the gauge to be deployed in a corrosive environment and reliably measure pressures as low as 10?4 mbar over a prolonged period of time.
    Type: Application
    Filed: July 12, 2005
    Publication date: March 5, 2009
    Applicant: THE BOC GROUP PLC
    Inventors: Waleed Ahmed Qader, Alan Edward Holme
  • Vacuum gauge
    Patent number: 6474171
    Abstract: A vacuum gauge of the cold cathode type has a gauge head which includes a cathode discharge cell and an anode a portion of which is located within the cathode discharge cell. An electrically operated ignition device is located adjacent the cathode discharge cell which ignition device is protected from being operated at high pressure by an auxiliary pressure sensor.
    Type: Grant
    Filed: March 21, 2000
    Date of Patent: November 5, 2002
    Assignee: The BOC Group plc
    Inventors: Alan Edward Holme, Waleed Ahmed Qader