Company Filing History:
Years Active: 1985-1992
Title: Claude Gragnolati: Innovator in Hydrophone and Geophone Technology
Introduction
Claude Gragnolati is a notable inventor based in Cannes, France. He has made significant contributions to the fields of sonar and geophone technology. With a total of 3 patents, Gragnolati's work focuses on innovative solutions that enhance the capabilities of underwater and geological sensing.
Latest Patents
Gragnolati's latest patents include a low-frequency hydrophone and a geophone with a sensitive element made of piezoelectric polymer. The low-frequency hydrophone is designed for sonar arrays and features a lacunary ceramics element with open porosity saturated by a viscous fluid. This hydrophone acts as a high-pass filter, with its cutoff frequency adjustable by modulating the area of the metal electrodes deposited on it. This invention is particularly useful in towed linear arrays and passive sonars. The geophone, on the other hand, is engineered to measure vibrations in the earth's crust. It consists of two-strip sensors made of piezoelectric polymer, which are embedded in the geophone casing and rest freely on the inertial mass, allowing for a very wide pass-band.
Career Highlights
Gragnolati has built a successful career at Thomson-CSF, where he has been able to apply his innovative ideas in practical applications. His work has significantly advanced the technology used in sonar and geophysical measurements.
Collaborations
Throughout his career, Gragnolati has collaborated with notable colleagues, including Didier Thollon and Jean-Georges Malcor. These collaborations have further enriched his contributions to the field.
Conclusion
Claude Gragnolati is a distinguished inventor whose work in hydrophone and geophone technology has made a lasting impact. His innovative patents continue to influence advancements in sonar and geological sensing technologies.