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For the Inventor, By the Inventor

Paris, France

Charles Maerfeld

This inventor holds 17 USPTO granted patents, primarily in Acoustic Devices. Top assignees: Thomson-Csf, Cgr Ultrasonic, General Electric Cgr S.a.. Active years: 1976-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Charles Maerfeld. Retrieved from https://idiyas.com/inventor/charles-maerfeld

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Calculating rank
USPTO Granted Patents = 17

% Patents Active = 100.0

Average Co-Inventor Count = 1.6

ph-index = 9

Forward Citations = 172(Granted Patents)


Location History:

  • Paris, FR (1976 - 1984)
  • Constance, FR (1989)
  • Antibes, FR (1985 - 1992)

Company Filing History:

goldMedal14 out of 2,692 
 
Thomson-Csf
 patents
silverMedal2 out of 19 
 
Cgr Ultrasonic
 patents
bronzeMedal1 out of 101 
 
General Electric Cgr S.a.
 patents

Years Active: 1976-1992

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Areas of Expertise:
Echograph
Acoustic Transducer
Ultrasonic Sensor
Elastic Waves
Piezoelectric Device
Hydrophone
Acousto-Electric
Frequency Translation
Signal Processing
Surface Waves
Velocity Measurement
Medical Imaging
17 patents (USPTO):Explore Patents
1. 5109860 - Probe with curved bar for an echograph (1992-05-05),
2. 5022731 - Device for optical frequency translation and a modulator in which said (1991-06-11),
3. 4870972 - Multiple-frequency acoustic transducer, especially for medical imaging (1989-10-03),
4. 4794929 - Echography probe and echograph fitted, with a probe of this type (1989-01-03),
5. 4694700 - Ultrasonic sensor for electronic sectorial scanning and echograph (1987-09-22),
6. 4547870 - Velocity hydrophone (1985-10-15),
7. 4477784 - Surface wave dispersive acoustic delay line (1984-10-16),
8. 4388599 - Piezoelectric elastic-wave convolver device (1983-06-14),
9. 4323985 - Two dimensional acousto-electrical device for storing and processing (1982-04-06),
10. 4314098 - Reversible electroacoustic transducer device having a constant (1982-02-02),
11. 4306456 - Elastic wave accelerometer (1981-12-22),
12. 4281350 - Acoustoelectric device for reading or processing a two-dimensional (1981-07-28),
13. 4159539 - Elastic waves device for memorizing information (1979-06-26),
14. 4134623 - System for processing an electric signal using elastic surface waves (1979-01-16),
15. 4128615 - Method for processing an electric signal using elastic surface waves (1978-12-05),

Title: The Innovative Contributions of Charles Maerfeld

Introduction

Charles Maerfeld is a prominent inventor based in Paris, France. He has made significant contributions to the field of technology, particularly in optical devices and echography. With a total of 17 patents to his name, Maerfeld's work has had a lasting impact on various industries.

Latest Patents

Among his latest patents is a "Probe with curved bar for an echograph." This invention enhances the capabilities of echographic devices, allowing for more accurate imaging. Another notable patent is a "Device for optical frequency translation and a modulator." This device involves a complex mechanism where two optical waveguides are coupled, enabling the shifting of optical wave frequencies. The process involves transitioning from symmetric to antisymmetric modes, ultimately allowing for the construction of BLU optical modulators.

Career Highlights

Throughout his career, Charles Maerfeld has worked with notable companies such as Thomson-CSF and CGR Ultrasonic. His experience in these organizations has contributed to his expertise in developing innovative technologies.

Collaborations

Maerfeld has collaborated with esteemed colleagues, including Herve Gautier and Pierre Tournois. Their joint efforts have further advanced the field of optical technology and echography.

Conclusion

Charles Maerfeld's contributions to innovation and technology are noteworthy. His patents and collaborations reflect a commitment to advancing the field, making him a significant figure in the world of invention.

Profile summary based on public USPTO records.
Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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