Patents Assigned to Ultran Laboratories, Inc.
  • Method of making ultrasound transducer or actuator
    Publication number: 20050000629
    Abstract: Method of making a gas matrix composite ultrasound transducer comprises aligning piezoelectric rods or fibers substantially parallel to each other on an adhesive side of a plurality of curable adhesive-faced sheets, stacking the sheets so as to maintain the gaps between the rods or fibers, curing the adhesive, cutting the cured structure perpendicular to the rods or fibers into narrow slices, and applying a conductive layer to each cut face to form electrical contacts with both ends of the rods or fibers.
    Type: Application
    Filed: May 6, 2004
    Publication date: January 6, 2005
    Applicant: ULTRAN LABORATORIES, INC.
    Inventor: Mahesh Bhardwaj
  • Anisotropic acoustic impedance matching material
    Publication number: 20040174095
    Abstract: A piezoelectric transducer comprises a piezoelectric layer and an adjacent layer of an acoustic impedance matching material having a plane face comprising a homogenous matrix material with embedded fibers, clusters of fibers, or rods of another material oriented perpendicular to the plane face.
    Type: Application
    Filed: January 15, 2004
    Publication date: September 9, 2004
    Applicant: ULTRAN LABORATORIES, INC.
    Inventor: Mahesh C. Bhardwaj
  • Temperature independent ultrasound transducer device
    Patent number: 4703656
    Abstract: An ultrasound transducer device for use below and above room temperature comprises a case secured to a cup-shaped ceramic piece having a substantially flat end wall. The outer surface of the end wall comprises a face through which ultrasound is transmitted and received by the transducer device. The cup-shaped ceramic piece has sidewalls extending along the entire periphery of the end face and back into the case. A piezoelectrically active element is bonded to the inner surface of the end wall of the cup-shaped ceramic piece.
    Type: Grant
    Filed: April 7, 1986
    Date of Patent: November 3, 1987
    Assignee: Ultran Laboratories, Inc.
    Inventor: Mahesh C. Bhardwaj