Patents by Inventor Kaumali Prasangika Abeysinghe

Kaumali Prasangika Abeysinghe 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).

  • Humidity sensor
    Patent number: 6895803
    Abstract: A method and apparatus are described for sensing the absolute humidity of gases where the relative humidity of gases are measured, the humidity transducer is heated, the resulting temperature measured and the absolute humidity calculated (based on the power to heat said transducer, the temperature of said transducer and the relative humidity). In further embodiments the humidity transducer may be heated to a pasteurisation temperature, to substantially kill any common pathogens present on the humidity transducer. The flow rate may be determined to estimate a more instantaneous valve of humidity. The operation of the sensor may be continually monitored for correct operation and various constructions disclosed for improving the efficiency of operation.
    Type: Grant
    Filed: October 10, 2001
    Date of Patent: May 24, 2005
    Assignee: Fisher & Paykel Healthcare Limited
    Inventors: Paul John Seakins, Malcolm David Smith, Kaumali Prasangika Abeysinghe
  • Humidity sensor
    Publication number: 20020078733
    Abstract: A method and apparatus are described for sensing the absolute humidity of gases where the relative humidity of gases are measured, the humidity transducer is heated, the resulting temperature measured and the absolute humidity calculated (based on the power to heat said transducer, the temperature of said transducer and the relative humidity).
    Type: Application
    Filed: October 10, 2001
    Publication date: June 27, 2002
    Inventors: Paul John Seakins, Malcolm David Smith, Kaumali Prasangika Abeysinghe