Patents by Inventor George Raymond Russell

George Raymond Russell 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).

  • Ultrasound transducer with focused ultrasound refraction plate
    Patent number: 5873845
    Abstract: A system for performing surgery by vibrational heating employs an ultrasonic transducer 80 for focusing a spherical ultrasound wave on a focal region. In one embodiment a refraction plate 410 having a spherical surface facing the transducer and a refracting surface with refracting pyramid elements 450 facing the subject causes the ultrasound beam to impinge on a plurality of overlapping focal regions and thereby expand the focal area of the transducer. In a second embodiment the refraction plate comprises a phased lens 600 having a constant thickness at any angular location but with its thickness varying linearly over 2.pi. radians or multiples thereof.
    Type: Grant
    Filed: March 17, 1997
    Date of Patent: February 23, 1999
    Assignee: General Electric Company
    Inventors: Harvey Ellis Cline, Ronald Dean Watkins, George Raymond Russell, Kullervo Henrik Hynynen