Patents by Inventor David E. Hockaday

David E. Hockaday 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).

  • Aerosol testing method
    Patent number: 5261538
    Abstract: The present invention comprises a method for measuring the amount, i.e., mass, of a volatile liquid which comprises passing the mass over a heat loss measuring device, calculating the amount of heat loss accompanying the vaporization of the mass and correlating the heat loss to measurement of heat loss of known liquid aerosol mass made with the same device.
    Type: Grant
    Filed: April 21, 1992
    Date of Patent: November 16, 1993
    Assignee: Glaxo Inc.
    Inventors: Rix E. Evans, Alec P. Flowers, Jr., David E. Hockaday, David W. Loar, James K. Proctor