Patents by Inventor David Hendren

David Hendren 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).

  • Optical element driving circuit
    Publication number: 20070263279
    Abstract: Optical element driving circuits flexibly configure energy sources to cause a flash tube to produce illumination at one of multiple output intensities. The driving circuits allow a single strobe alarm to take the place of multiple strobe alarms individually dedicated to specific output intensities. The driving circuits may also mitigate or eliminate high voltage arcing within the driving circuit.
    Type: Application
    Filed: May 11, 2006
    Publication date: November 15, 2007
    Inventors: Kenneth Savage, David Hendren