Gerhardt Van Drie

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El Segundo, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Gravity powered mixer system
- Patent number 6,926,437
- Issue date Aug 9, 2005
- Gerhardt Van Drie
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
High dissolved oxygen mixer-digester method
- Patent number 6,599,426
- Issue date Jul 29, 2003
- Gerhardt Van Drie
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Submarine type liquid mixer with aeration
- Patent number 6,322,056
- Issue date Nov 27, 2001
- Gerhardt Van Drie
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Counterbalanced dual submarine-type liquid mixer pairs
- Patent number 6,029,955
- Issue date Feb 29, 2000
- Gerhardt Van Drie
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

Patents Applicationslast 30 patents

Information Patent Application
Integrated fixed film activated sludge system
- Publication number 20050201202
- Publication date Sep 15, 2005
- Gerhardt Van Drie
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Gravity powered mixer system
- Publication number 20040052157
- Publication date Mar 18, 2004
- Gerhardt Van Drie
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
High dissolved oxygen mixer-digester
- Publication number 20020011441
- Publication date Jan 31, 2002
- Gerhardt Van Drie
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL