This inventor holds 7 USPTO granted patents. Top assignee: Thomson-Csf. Active years: 1978-1992.
Location History:
- Paris, FR (1978)
- Le Rouret, FR (1989)
- Nice, FR (1990 - 1992)
Company Filing History:
Years Active: 1978-1992
Title: The Innovative Contributions of Philippe Defranould
Introduction
Philippe Defranould is a notable inventor based in Paris, France. He has made significant contributions to the field of acoustic wave technology, holding a total of 7 patents. His work has advanced the understanding and application of acoustic wave systems, particularly in optically controlled environments.
Latest Patents
One of his latest patents is an "Acoustic wave delay system with an optically controlled delay medium." This invention involves a delay device for frequency signals that utilizes acousto-optical materials. It features a first piezo-electric transducer that transmits an acoustic signal and a second transducer that detects the acoustic wave. A light beam passing through the element creates a charge field that acts as a reflector for the transmitted acoustic wave, allowing for variable propagation times by translating the beam.
Another significant patent is the "Piezoelectric transducer to generate bulk waves." This transducer is designed to generate acoustic waves in the microwave range within a crystalline support. It includes a ground electrode partially covering the substrate's face, a piezoelectric plate, and a second electrode that defines the active region of the transducer. This design minimizes direct soldering on the electrode, thereby reducing the admittance compared to traditional transducers.
Career Highlights
Philippe Defranould has been associated with Thomson-CSF, a prominent company in the field of technology and innovation. His work there has allowed him to explore and develop advanced acoustic technologies that have practical applications in various industries.
Collaborations
Throughout his career, Philippe has collaborated with notable colleagues such as Claude Poncot and Marc Verroust. These collaborations have fostered an environment of innovation and have contributed to the successful development of his patents.
Conclusion
Philippe Defranould's contributions to acoustic wave technology exemplify the spirit of innovation. His patents reflect a deep understanding of the complexities of acoustic systems and their applications. His work continues to influence the field and inspire future advancements.