Patents by Inventor Patricia E. Rasmussen

Patricia E. Rasmussen 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).

  • Buoyancy-corrected gravimetric analysis system
    Patent number: 7357045
    Abstract: Relatively accurate gravimetric analysis of airborne particulate matter in a sample is achieved by making gravimetric measurements of the sample on a microbalance in a closed chamber, continuously electronically monitoring air pressure, humidity and temperature in the chamber, continuously controlling humidity and temperature in the chamber, and combining the gravimetric measurement with measurements of air pressure, humidity and temperature in the chamber to make a buoyancy corrected determination of the mass of the particulate matter.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: April 15, 2008
    Assignee: Her Majesty the Queen in Right of Canada as represented by The Minister of Health
    Inventors: Patricia E. Rasmussen, David J. Maclntyre, Josée Guénette