Patents by Inventor Lei Pen

Lei Pen 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).

  • Patent number: 7522780
    Abstract: Method and apparatus useful in the inspection of a target comprises scanning the target with a pulsed acoustic beam, sensing the pulsed beam after it has been modified by interaction with the target, producing a time-domain signal indicative of the modifications, processing the time-domain signal to produce a frequency domain representation of the modifications, and producing an image-wise display of the frequency domain representation of the modifications. In one execution disclosed, the frequency domain representation is altered and then reconverted to a time domain signal before display.
    Type: Grant
    Filed: March 24, 2005
    Date of Patent: April 21, 2009
    Assignee: Sonoscan, Inc.
    Inventors: Michael G. Oravecz, Lei Pen, Lawrence W. Kessler, Zhiqu Guo
  • Publication number: 20050240106
    Abstract: Method and apparatus useful in the inspection of a target comprises scanning the target with a pulsed acoustic beam, sensing the pulsed beam after it has been modified by interaction with the target, producing a time-domain signal indicative of the modifications, processing the time-domain signal to produce a frequency domain representation of the modifications, and producing an image-wise display of the frequency domain representation of the modifications. In one execution disclosed, the frequency domain representation is altered and then reconverted to a time domain signal before display.
    Type: Application
    Filed: March 24, 2005
    Publication date: October 27, 2005
    Inventors: Michael Oravecz, Lei Pen, Lawrence Kessler, Zhiqi Guo
  • Patent number: 6890302
    Abstract: Method and apparatus useful in the inspection of a target comprises scanning the target with a pulsed acoustic beam, sensing the pulsed beam after it has been modified by interaction with the target, producing a time-domain signal indicative of the modifications, processing the time-domain signal to produce a frequency domain representation of the modifications, and producing an image-wise display of the frequency domain representation of the modifications. In one execution disclosed, the frequency domain representation is altered and then reconverted to a time domain signal before display.
    Type: Grant
    Filed: November 13, 2001
    Date of Patent: May 10, 2005
    Assignee: Sonoscan, Inc.
    Inventors: Michael G. Oravecz, Lei Pen, Lawrence W. Kessler, Zhiqi Guo
  • Publication number: 20020058871
    Abstract: Method and apparatus useful in the inspection of a target comprises scanning the target with a pulsed acoustic beam, sensing the pulsed beam after it has been modified by interaction with the target, producing a time-domain signal indicative of the modifications, processing the time-domain signal to produce a frequency domain representation of the modifications, and producing an image-wise display of the frequency domain representation of the modifications. In one execution disclosed, the frequency domain representation is altered and then reconverted to a time domain signal before display.
    Type: Application
    Filed: November 13, 2001
    Publication date: May 16, 2002
    Applicant: Sonoscan, Inc.
    Inventors: Michael G. Oravecz, Lei Pen, Lawrence Kessler, Guo Zhiqi