Patents by Inventor Randall C. Ziegenbein

Randall C. Ziegenbein 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).

  • Ultrasonic imaging system and method with ringdown reduction
    Patent number: 6036650
    Abstract: Ultrasonic imaging method and apparatus in which a reference waveform which is substantially free of echoes is modified to be equal to a weighted sum of the reference waveform and filtered signals from the transducing elements which transmit the ultrasonic waves and receive the reflected echoes. The modified waveform is then subtracted from the transducer signals to remove ringdown signals and provide a displayed image which is substantially free of ringdown artifacts.
    Type: Grant
    Filed: September 15, 1998
    Date of Patent: March 14, 2000
    Assignee: Endosonics Corporation
    Inventors: Ching-Chen Wu, Gerald L. Litzza, David Bleam, Randall C. Ziegenbein