Patents by Inventor Nate Elsen

Nate Elsen 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).

  • Resonant converter tuning for maintaining substantial constant phaco handpiece power under increased load
    Publication number: 20060079788
    Abstract: A phacoemulsification system includes a phacoemulsification handpiece including a cutting tip ultrasonically vibrated by an ultrasonic transducer. A power supply is provided for driving the ultrasonic transducer at a resonant frequency of the transducer and cutting tip and varying power to the transducer, in response to loading of the cutting tip, by phase shifting voltage and current supplied to the transducer.
    Type: Application
    Filed: November 18, 2005
    Publication date: April 13, 2006
    Inventors: David Anderson, Nate Elsen, Michael Fellinger, Pravin Mehta