Patents by Inventor David Graef

David Graef 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).

  • High bandwidth real-time oscilloscope
    Publication number: 20060074606
    Abstract: A method and apparatus for digitizing a signal. The method comprises the steps of receiving an input analog signal, splitting the received input analog signal into a plurality of signals and frequency converting at least one of the signals in accordance with a predetermined periodic function having a predetermined frequency. The signals are then digitized and combined mathematically to form a single output stream that is a substantially correct representation of the original input analog signal.
    Type: Application
    Filed: November 9, 2005
    Publication date: April 6, 2006
    Inventors: Peter Pupalaikis, David Graef
  • Measurement instrument
    Patent number: D500693
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: January 11, 2005
    Assignee: LeCroy Corporation
    Inventors: David Graef, Phil Stearns, Norio Shimomura, Satoshi Hayasaka
  • Measurement instrument
    Patent number: D501414
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: February 1, 2005
    Assignee: LeCroy Corporation
    Inventors: David Graef, Phil Stearns, Norio Shimomura, Satoshi Hayasaka
  • Measurement instrument
    Patent number: D504078
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: April 19, 2005
    Assignee: LeCroy Corporation
    Inventors: David Graef, Phil Stearns, Norio Shimomura, Satoshi Hayasaka
  • Measurement instrument
    Patent number: D504341
    Type: Grant
    Filed: October 9, 2003
    Date of Patent: April 26, 2005
    Assignee: LeCroy Corporation
    Inventors: David Graef, Phil Stearns, Norio Shimomura, Satoshi Hayasaka