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Etat Francais

USPTO Granted Patents = 132

Trademarks = 1

Forward Citations = 1,540

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250 inventors (with patents filed for the assignee):

Jean F Melchior (8 out of 43 patents)

Thierry M Andre (5 out of 16 patents)

Jean-Pierre R Guezou (4 out of 5 patents)

4. Bernard Tocquet (3 out of 7 patents)

5. Hans W Luther (3 out of 15 patents)

6. Georges H Simon (3 out of 17 patents)

7. Paul R Montjallard (3 out of 3 patents)

8. Guillaume A Gay-Chatain (3 out of 3 patents)

9. Gilbert Marius Martin (3 out of 3 patents)

10. Michel Georges Quivy (3 out of 3 patents)

11. Philippe H Cluzel (3 out of 4 patents)

12. Claude Bouvet (3 out of 3 patents)

13. Michel E Terrien (3 out of 3 patents)

14. Jacques A Durant (3 out of 3 patents)

15. Robert J Balquet (3 out of 4 patents)

Core Competencies:

Optical Elements

Coating Techniques

Radiation Testing

Simulation Scene

Breathing Devices

Portable Probes

Acoustic Antennas

Supercharged Engines

Gas Confinement

Dosimetry Systems

Composite Materials

Welding Processes

132 patents: Sort by Forward Citations

1. 11270521 - Creation of a simulation scene from a specified view point (2022-03-08),

2. 6155254 - Self-contained device for chemically producing high-pressure breathing (2000-12-05),

3. 5988873 - Portable bathymetric probe simulator (1999-11-23),

4. 5952085 - Multiple layer erosion resistant coating and a method for its production (1999-09-14),

5. 5906459 - Laser-assisted milling process (1999-05-25),

6. 5879820 - Multilayer stack of fluoride materials usable in optics and its (1999-03-09),

7. 5733042 - Device and method for testing an optical element subjected to radiation (1998-03-31),

8. 5582518 - System for restoring the visual environment of a pilot in a simulator (1996-12-10),

9. 5520056 - Process for conditioning and for placing a traffic sensor (1996-05-28),

10. 5226410 - Physiological safety device for aircraft pilots (1993-07-13),

11. 5213906 - Composite material comprising a layer of a III-V compound and a layer of (1993-05-25),

12. 5212991 - Portable, self-contained equipment for the in situ analysis of a liquid (1993-05-25),

13. 5197061 - Device for the transmission of digital data with at least two levels of (1993-03-23),

14. 5130793 - Reconfigurable multiple-point wired in-house network for simultaneous (1992-07-14),

15. 5070486 - Process to increase the power of the low frequency electro acoustic (1991-12-03),

Company Overview

Etat Francais, based in Paris, specializes in the development and manufacturing of advanced optical devices. The company focuses on a range of core technology topics, including optical elements and coating techniques, which are essential for enhancing the performance of various optical systems. Additionally, Etat Francais is involved in radiation testing and simulation scene technologies, contributing to the fields of breathing devices and portable probes. Their expertise extends to acoustic antennas and supercharged engines, positioning them as a key player in optical and acoustic innovations.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

132 Patents

#61 in Paris

#215 in France

#6,098 in the World

Etat Francais

Forward Citations = 1,540

250 inventors:

Jean F Melchior (8 out of 43 patents)

Thierry M Andre (5 out of 16 patents)

Jean-Pierre R Guezou (4 out of 5 patents)

4. Bernard Tocquet (3 out of 7 patents)

5. Hans W Luther (3 out of 15 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Etat Francais. Retrieved from https://idiyas.com/company/etat-francais

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

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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