Patents by Inventor Alvin N. Bird, Jr.

Alvin N. Bird, Jr. 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).

  • Continuous-flow condensation nuclei counter and process
    Patent number: 4293217
    Abstract: A portable device and a process for detection of persons and things by the Condensation Nuclei" technique. The disclosure sets out a new continuous flow device and process that collects an air sample, subjects it to supersaturation conditions when flowing for growing or condensation on air sample nuclei, and detects and counts the condensated or grown particles with a photo means and a conventional counter. An air sample is pumped through a heated tube humidifier where the sample becomes supersaturated for condensation. It is then carried by detector means for counting.
    Type: Grant
    Filed: February 6, 1980
    Date of Patent: October 6, 1981
    Assignee: The United States of America as represented by the Secretary of the Army
    Inventors: Alvin N. Bird, Jr., Norman L. Francis, Albert L. Thomas, Jr.