Patents by Inventor V N Ojha

V N Ojha 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).

  • Electromagnetic acoustic transducer excitation source with programmable tone burst generator
    Patent number: 10250979
    Abstract: The present invention relates to an electromagnetic acoustic transducer excitation system comprising a tone burst generator, the tone burst generator comprising: an oscillator device configured to produce a radio frequency signal; an analog switch configured to produce an output based on the radio frequency signal produced by the oscillator device and a control signal; a pre-amplifier configured to amplify the output of the analog switch and produce a tone burst output signal; and a control module configured to produce the control signal for providing to the analog switch.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: April 2, 2019
    Assignee: COUNCIL OF SCIENTIFIC & INDUSTRIAL RESEARCH
    Inventors: P K Dubey, V N Ojha, Shashank Singh
  • ELECTROMAGNETIC ACOUSTIC TRANSDUCER EXCITATION SOURCE WITH PROGRAMMABLE TONE BURST GENERATOR
    Publication number: 20180160229
    Abstract: The present invention relates to an electromagnetic acoustic transducer excitation system comprising a tone burst generator, the tone burst generator comprising: an oscillator device configured to produce a radio frequency signal; an analog switch configured to produce an output based on the radio frequency signal produced by the oscillator device and a control signal; a pre-amplifier configured to amplify the output of the analog switch and produce a tone burst output signal; and a control module configured to produce the control signal for providing to the analog switch.
    Type: Application
    Filed: December 1, 2017
    Publication date: June 7, 2018
    Inventors: P K Dubey, V N Ojha, Shashank Singh