4. Measuring and testing
  5. Vibration
  6. Sensing apparatus

Helen L. W. Chan

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Multifrequency composite ultrasonic transducer system

Electrical generator or motor structure – Non-dynamoelectric – Piezoelectric elements and devices
Patent

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Optical fibre ultrasonic sensor

Measuring and testing – Vibration – Sensing apparatus
Patent

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Ultrasonic sensor using a polarization maintaining fibre

Measuring and testing – Vibration – Sensing apparatus
Patent

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Ultrasound sensor and ultrasound measurement device

Communications – electrical: acoustic wave systems and devices – Signal transducers – Underwater type
Reexamination Certificate

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Profile ID: LFUS-PAI-P-992133

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