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DHV Raadgevend Ingenieursbureau B.V.
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Amersfoort, NL
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Patents Grants
last 30 patents
Information
Patent Grant
Process for the removal of fluoride from waste water
Patent number
5,106,509
Issue date
Apr 21, 1992
DHV Raadgevend Ingenieursbureau B.V.
Cornelis W. Jansen
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Process for the removal of metals, in particular heavy metals, from...
Patent number
4,861,493
Issue date
Aug 29, 1989
DHV Raadgevend Ingenieursbureau BV
Cornelis W. Jansen
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Process for removing of heavy metal from water in particular from w...
Patent number
4,764,284
Issue date
Aug 16, 1988
DHV Raadgevend Ingenieursbureau B.V.
Cornelis W. Jansen
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Apparatus for contacting a gas with a liquid, in particular for aer...
Patent number
4,741,869
Issue date
May 3, 1988
DHV Raadgevend Ingenieursbureau B.V.
Dirk T. Hove
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Process for chemical reduction of the phosphate content of water
Patent number
4,389,317
Issue date
Jun 21, 1983
DHV Raadgevend Ingenieursbureau BV
Christiaan C. M. Trentelman
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Dredging vessel
Patent number
4,261,117
Issue date
Apr 14, 1981
DHV Raadgevend Ingenieursbureau BV
Jan C. van der Peyl
E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING
Information
Patent Grant
Filter tube for drain purposes
Patent number
4,260,284
Issue date
Apr 7, 1981
DHV Raadgevend Ingenieursbureau BV
Robert Huart
E03 - WATER SUPPLY SEWERAGE
Patents Applications
last 30 patents
Trademark
last 30 trademarks
Information
Trademark
74096412 - CARROUSEL 2000
Serial number
74096412
Registration number
1690036
Filing date
Sep 12, 1990
DHV Raadgevend Ingenieursbureau B.V.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
73795948 - THE CRYSTALACTOR
Serial number
73795948
Registration number
1592639
Filing date
Apr 26, 1989
DHV Raadgevend Ingenieursbureau B.V.
1 - Chemicals used in industry, science and photography, as well as in agriculture, horticulture and forestry
Information
Trademark
73657040 - OXYCAP
Serial number
73657040
Registration number
1497584
Filing date
Apr 24, 1987
DHV Raadgevend Ingenieursbureau B.V.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
73311230 - CARROUSEL
Serial number
73311230
Registration number
1205349
Filing date
May 20, 1981
DHV Raadgevend Ingenieursbureau B.V.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes
Information
Trademark
73291589 - OXYRATOR
Serial number
73291589
Registration number
1196727
Filing date
Dec 31, 1980
DHV Raadgevend Ingenieursbureau B.V.
11 - Apparatus for lighting, heating, steam generating, cooking, refrigerating, drying, ventilating, water supply and sanitary purposes