Patents by Inventor Geoff R. Lockwood

Geoff R. Lockwood 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: 5412854
    Abstract: A high frequency focused transducer may be formed by fabricating a piezoelectric or ferroelectric wafer of a thickness less than about 100 microns and bonding a malleable sheet to the wafer with a thin layer of adhesive. Thereafter, the composite may be pressed into a spherical mold to form a curved transducer without fracturing the wafer. In another embodiment, a conductive adhesive layer may be applied to the wafer to a thickness sufficient to hold the wafer in a curved state, when set. After the adhesive is set, the composite may be pressed into the mold while the adhesive is held at an elevated temperature whereat it is elastic. Thereafter the composite is cooled so that the adhesive layer is stabilized and the curved transducer is removed from the well.
    Type: Grant
    Filed: June 18, 1993
    Date of Patent: May 9, 1995
    Assignees: Humphrey Instruments, Inc., Sunnybrook Health Science Centre
    Inventors: Geoff R. Lockwood, Daniel H. Turnbull, F. Stuart Foster