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LYONNAISE DES EAUX, S.A.
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PARIS, FR
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Patents Grants
last 30 patents
Information
Patent Grant
Heat exchanger and installation for extracting heat from waste water
Patent number
8,720,533
Issue date
May 13, 2014
Lyonnaise des Eaux
Urs Studer
F28 - HEAT EXCHANGE IN GENERAL
Information
Patent Grant
Method of Regulating Aeration in a basin for bilogical treatment of...
Patent number
5,624,565
Issue date
Apr 29, 1997
Lyonnaise Des Eaux
Fanny Lefevre
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Method and apparatus for increasing sludge concentration in water p...
Patent number
5,098,572
Issue date
Mar 24, 1992
Lyonnaise des Eaux
Gerard Faup
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Housing for fiber-bundle filter modules
Patent number
5,069,353
Issue date
Dec 3, 1991
Lyonnaise des Eaux
Jean-Michel Espenan
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Method for regulating the residual free chlorine in water
Patent number
5,011,613
Issue date
Apr 30, 1991
Lyonnaise des Eaux
Cathy Feray
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Method of manufacturing a unit assembly of filter membranes, a mold...
Patent number
5,006,229
Issue date
Apr 9, 1991
Lyonnaise des Eaux
Jean-Michel Espenan
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Device for fixing a water meter on to a base and method relating th...
Patent number
4,995,643
Issue date
Feb 26, 1991
Manufacture d'Appareillage Electriquie de Cahors
Alain Rappart
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information
Patent Grant
Apparatus for the disolution of ozone in a fluid
Patent number
4,990,316
Issue date
Feb 5, 1991
Lyonnaise des Eaux
Jean-Pierre Duguet
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Filter module including a baffle for protecting a bundle of filter...
Patent number
4,975,187
Issue date
Dec 4, 1990
Lyonnaise des Eaux
Jean-Michel Espenan
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method of fabricating a perforated plate for a hollow fiber separat...
Patent number
4,917,798
Issue date
Apr 17, 1990
Lyonnaise des Eaux
Jun K. Liou
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Device for connecting and supporting a water-meter
Patent number
4,819,482
Issue date
Apr 11, 1989
Manufacture d'Appareillage Electrique de Cahors
Alain Rappart
F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
73772273 - CLEOR
Serial number
73772273
Registration number
1569389
Filing date
Dec 30, 1988
LYONNAISE DES EAUX, S.A.
9 - Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signalling, checking (supervision), life-saving and teaching apparatus and instruments