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Paris la Defense, France

Lyonnaise Des Eaux

USPTO Granted Patents = 11

Forward Citations = 167

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15 inventors (with patents filed for the assignee):

Jean-Michel Espenan (3 out of 6 patents)

Jean-Marc Audic (2 out of 7 patents)

Henri Loosdregt (2 out of 2 patents)

4. Alain Rappart (2 out of 2 patents)

5. Philippe Persohn (2 out of 2 patents)

6. Urs Studer (1 out of 1 patent)

7. Jun Kong Liou (1 out of 2 patents)

8. Fanny Lefevre (1 out of 3 patents)

9. Philippe Aptel (1 out of 4 patents)

10. Conrad Hubele (1 out of 1 patent)

11. Cathy Feray (1 out of 1 patent)

12. Paul Pershon (1 out of 1 patent)

13. Jean-Pierre Duguet (1 out of 2 patents)

14. Gerard Faup (1 out of 1 patent)

15. Paul Persohn (1 out of 1 patent)

11 patents: Sort by Forward Citations

1. 8720533 - Heat exchanger and installation for extracting heat from waste water (2014-05-13),

2. 5624565 - Method of Regulating Aeration in a basin for bilogical treatment of (1997-04-29),

3. 5098572 - Method and apparatus for increasing sludge concentration in water (1992-03-24),

4. 5069353 - Housing for fiber-bundle filter modules (1991-12-03),

5. 5011613 - Method for regulating the residual free chlorine in water (1991-04-30),

6. 5006229 - Method of manufacturing a unit assembly of filter membranes, a mold used (1991-04-09),

7. 4995643 - Device for fixing a water meter on to a base and method relating thereto (1991-02-26),

8. 4990316 - Apparatus for the disolution of ozone in a fluid (1991-02-05),

9. 4975187 - Filter module including a baffle for protecting a bundle of filter fibers (1990-12-04),

10. 4917798 - Method of fabricating a perforated plate for a hollow fiber separator (1990-04-17),

11. 4819482 - Device for connecting and supporting a water-meter (1989-04-11),

Lyonnaise des Eaux is a French multinational company that specializes in water and waste management services. With a history dating back to the 19th century, the company has established itself as a leader in the global water industry. Lyonnaise des Eaux offers a wide range of solutions for water treatment, distribution, and sanitation, as well as waste collection and recycling services. Through its parent company SUEZ, Lyonnaise des Eaux continues to innovate and develop sustainable solutions to address the world's growing water and waste challenges.

This text is generated by artificial intelligence and may not be accurate.

Company Badge

USPTO Data Jan 1 1976 - Dec 9 2025

11 Patents

#7 in Paris la Defense

#1,545 in France

#50,159 in the World

Paris la Defense, France

Lyonnaise Des Eaux

Forward Citations = 167

15 inventors:

Jean-Michel Espenan (3 out of 6 patents)

Jean-Marc Audic (2 out of 7 patents)

Henri Loosdregt (2 out of 2 patents)

4. Alain Rappart (2 out of 2 patents)

5. Philippe Persohn (2 out of 2 patents)

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