Patents by Inventor Peter A. Payne

Peter A. Payne 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).

  • Apparatus for investigating a sample with ultrasound
    Patent number: 5381695
    Abstract: An apparatus for investigating a sample with ultrasound has a probe head formed by a casing, a transducer element of piezoelectric plastics material, and a source for applying a high frequency pulse to the sample. The source is preferably one end of an optical fibre, which fibre extends to a laser remote from the probe head. The transducer element is connected to the sample by an acoustic coupling medium, e.g. water. Thus, the probe head can be moved relative to the sample, and a compact, but efficient, structure is achieved.
    Type: Grant
    Filed: January 14, 1994
    Date of Patent: January 17, 1995
    Assignee: British Technology Group Ltd.
    Inventors: Peter A. Payne, Richard J. Dewhurst
  • Apparatus for investigating a sample with ultrasound
    Patent number: 5099693
    Abstract: An apparatus for investigating a sample with ultrasound has a probe head formed by a casing, a transducer element of piezoelectric plastics material, and a source for applying a high frequency pulse to the sample. The source is preferably one end of an optical fibre, which fibre extends to a laser remote from the probe head. The transducer element is connected to the sample by an acoustic coupling medium, e.g. water. Thus, the probe head can be moved relative to the sample, and a compact, but efficient, structure is achieved.
    Type: Grant
    Filed: October 15, 1990
    Date of Patent: March 31, 1992
    Assignee: Cogent Limited
    Inventors: Peter A. Payne, Richard J. Dewhurst
  • Method for manufacturing piezoelectric polymer transducers
    Patent number: 5016333
    Abstract: A piezoelectric transducer of piezoelectric plastic material comprises a body and activated transducer film formed integrally. Electrodes are formed on opposite sides of the film, and a backing material supports the film on one side. The transducer may be formed by molding, applying the electrodes and activating the film by means of a corona discharge.
    Type: Grant
    Filed: December 18, 1989
    Date of Patent: May 21, 1991
    Assignee: Cogent Limited
    Inventors: Peter A. Payne, Mark Nicholls
  • Gas sensor
    Patent number: 4887455
    Abstract: A gas sensor has a layer of a semiconductor organic polymer, such as polypyrrole which is exposed to a gas to be detected. An alternating electric signal of varying frequency is applied to the sensor by an analyser, which detects the change in impedance characteristics of the sensor. The characteristics obtained are compared by microcomputer with reference characterisitcs stored in a memory. The resulting difference spectra depend on the gas in contact with the sensor and so the gas can be detected.
    Type: Grant
    Filed: April 5, 1988
    Date of Patent: December 19, 1989
    Assignee: Cogent Limited
    Inventors: Peter A. Payne, Jon G. Bartlett, Natalie K. Harris