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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 prominent player in the water management sector, specializing in the provision of water and wastewater services. The company focuses on developing innovative solutions for sustainable water use and environmental protection, emphasizing efficiency and quality in its operations. With a strong presence in France, Lyonnaise Des Eaux is committed to enhancing water resource management through advanced technologies and practices, contributing to public health and ecological sustainability.

Profile summary based on public USPTO records.

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USPTO Data Jan 1 1976 - Oct 6 2026

11 Patents

#7 in La Defense

#1,583 in France

#51,714 in the World

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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