Patents by Inventor Richard James Dewhurst

Richard James Dewhurst 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).

  • Ophthalmic uses of lasers
    Patent number: 6652459
    Abstract: There is disclosed a method for analysis and therapy of the eye utilizing laser-induced ultrasound.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: November 25, 2003
    Inventors: Peter Alfred Payne, Richard James Dewhurst, Emmanuel Rosen, Andrew Fink, Ali Sadr
  • Ophthalmic uses of lasers
    Publication number: 20020097374
    Abstract: There is disclosed a method for analysis and therapy of the eye utilizing laser-induced ultrasound.
    Type: Application
    Filed: June 25, 2001
    Publication date: July 25, 2002
    Inventors: Peter Alfred Payne, Richard James Dewhurst, Emmanuel Rosen, Andrew Fink, Ali Sadr
  • Laser ultrasound probe and ablator
    Patent number: 5718231
    Abstract: A laser ultrasound probe, suitable for intravascular use, of the kind having an ultrasonic transducer element comprising an ultrasound receiving surface of piezoelectric polymeric material and an optical fiber with one end directed forwardly from that surface and arranged to receive laser radiation for transmission through the optical fiber and emission from the said one end thereof, wherein the optical fiber is coupled with laser source means adapted to provide alternatively a relatively low average power laser beam, which, when modulated or pulsed and emitted from the one end of the optical fiber and incident on a target, will generate ultrasound at an intensity suitable to be received by the transducer element and converted thereby into electrical monitoring signals, and a relatively high average power laser beam suitable, when incident on the said target, to produce ablation thereof, the transducer element being sufficiently robust to withstand the ultrasound which is then also generated.
    Type: Grant
    Filed: February 20, 1996
    Date of Patent: February 17, 1998
    Assignee: British Technology Group Ltd.
    Inventors: Richard James Dewhurst, Peter Alfred Payne, Qing Xin Chen, Kok Fu Pang