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Gerhardt Van Drie
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El Segundo, CA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Biological waste digester
Patent number
8,357,293
Issue date
Jan 22, 2013
Gerhardt Van Drie
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Grant
Biological waste digester and method of operation
Patent number
8,133,386
Issue date
Mar 13, 2012
Gerhardt Van Drie
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Grant
Process for high-volume disposal of sludge and collection of combus...
Patent number
7,476,054
Issue date
Jan 13, 2009
Gerhardt Van Drie
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information
Patent Grant
Integrated fixed film activated sludge system using gravity assiste...
Patent number
7,083,324
Issue date
Aug 1, 2006
Gerhardt Van Drie
Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information
Patent Grant
High dissolved oxygen mixer-digester
Patent number
6,554,259
Issue date
Apr 29, 2003
Gerhardt Van Drie
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Submarine-type liquid mixer
Patent number
6,036,357
Issue date
Mar 14, 2000
Gerhardt Woodrow Van Drie
C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information
Patent Grant
Submarine-type liquid mixer
Patent number
5,762,418
Issue date
Jun 9, 1998
Gerhardt Woodrow Van Drie
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Refuse-extruder-and-compactor apparatus
Patent number
4,309,141
Issue date
Jan 5, 1982
Gerhardt Van Drie
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Grant
Unloading-type conveyor system
Patent number
4,253,791
Issue date
Mar 3, 1981
Gerhardt Van Drie
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Information
Patent Grant
Apparatus for collecting solid and loose-waste materials
Patent number
4,185,731
Issue date
Jan 29, 1980
Gerhardt Van Drie
B65 - CONVEYING PACKING STORING HANDLING THIN OR FILAMENTARY MATERIAL
Patents Applications
last 30 patents
Information
Patent Application
BIOLOGICAL WASTE DIGESTER
Publication number
20130015128
Publication date
Jan 17, 2013
Gerhardt Van Drie
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Application
Process for high-volume disposal of sludge and collection of combus...
Publication number
20080170910
Publication date
Jul 17, 2008
Gerhardt Van Drie
B09 - DISPOSAL OF SOLID WASTE RECLAMATION OF CONTAMINED SOIL SOIL
Information
Patent Application
High dissolved oxygen mixer-digester method
Publication number
20020158013
Publication date
Oct 31, 2002
Gerhardt Van Drie
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL