Patents Represented by Attorney, Agent or Law Firm William M. Imalle
  • Hydrophone for use in a downhole tool
    Patent number: 6438070
    Abstract: A pressure pulse sensor and associated methods provide enhanced functionality and convenience in detecting pressure pulses. In a described embodiment, a hydrophone includes a stack of disc-shaped lead titanate piezoelectric crystals enclosed within an epoxy membrane and a mounting portion which is aligned with a center of mass of the crystal stack.
    Type: Grant
    Filed: October 4, 1999
    Date of Patent: August 20, 2002
    Assignee: Halliburton Energy Services, Inc.
    Inventors: James R. Birchak, Alvin B. Miller, John W. Harrell