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Patents Grants
last 30 patents
Information
Patent Grant
Process for the oxidation of organic micropollutants in water using...
Patent number
5,364,537
Issue date
Nov 15, 1994
OTV (Omnium de Traitements et de Valorisation)
Herve Paillard
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Method for the biological purification of wastewater
Patent number
5,314,621
Issue date
May 24, 1994
OTV (Omnium de Traitements et de Valorisation)
Franck Rogalla
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Method and apparatus for purifying waste water
Patent number
5,019,268
Issue date
May 28, 1991
OTV (Omnium de Traitements et de Valorisation)
Franck Rogalla
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Process for biologically purifying sewage on a bed of granular mate...
Patent number
4,800,021
Issue date
Jan 24, 1989
OTV (Omnium de Traitements et de Valorisation)
Gilbert Desbos
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Apparatus for gas transfer and flotation for treating water to be p...
Patent number
4,795,557
Issue date
Jan 3, 1989
OTV (Omnium de Traitements et de Valorisation)
Marie-Marguerite Bourbigot
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Scoop wheel fermentation unit
Patent number
4,777,138
Issue date
Oct 11, 1988
O T V (Omnium de Traitements et de Valorisation
Jean-Pierre Levasseur
C05 - FERTILISERS MANUFACTURE THEREOF
Information
Patent Grant
Reactor for injection of gas into a liquid
Patent number
4,504,388
Issue date
Mar 12, 1985
OTV (Omnium de Traitement et de Valorisation)
Gilbert Desbos
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Water purification process
Patent number
4,255,266
Issue date
Mar 10, 1981
O T V (Omnium de Traitements et de Valorisation)
Henri Moreaud
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
74122553 - OTV
Serial number
74122553
Registration number
1788040
Filing date
Dec 11, 1990
OTV (OMNIUM DE TRAITEMENTS DE VALORISATION)
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes