Patents by Inventor Douglas D. Doonan

Douglas D. Doonan 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).

  • Bioluminescent sensor system
    Patent number: 3958938
    Abstract: In a bioluminescent sensor system there is provided a fluid path for passing vapors across a bioluminescent microorganism sensor to momentarily test for a specific vapor and a recirculating fluid path for otherwise passing humidified air across the sensor to provide humidification to condition the sensor environment to preclude the loss of moisture from the sensor microorganism and stabilize the luminescence and response characteristics of the sensor culture.
    Type: Grant
    Filed: December 16, 1974
    Date of Patent: May 25, 1976
    Assignee: Bausch & Lomb Incorporated
    Inventors: Douglas D. Doonan, Roy R. Sakaida