Mel Roshanravan

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Coppell, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Grease trap wastewater treatment process
- Patent number 5,543,050
- Issue date Aug 6, 1996
- Darling-Delaware Company, Inc.
- Mel Roshanravan
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Method and apparatus for dissolved air flotation with aeration
- Patent number 5,492,630
- Issue date Feb 20, 1996
- Darling International, Inc.
- Mel Roshanravan
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Apparatus for dissolved gas flotation in anaerobic wastewater treat...
- Patent number 5,437,785
- Issue date Aug 1, 1995
- Darling International
- Mel Roshanravan
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Grease-trap wastewater treatment system
- Patent number 5,433,846
- Issue date Jul 18, 1995
- Darling International Inc.
- Mel Roshanravan
- C05 - FERTILISERS MANUFACTURE THEREOF
Information Patent Grant
Process for dissolved gas flotation in anaerobic wastewater treatment
- Patent number 5,310,485
- Issue date May 10, 1994
- Darling-Delaware Company, Inc.
- Mel Roshanravan
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Method and apparatus for dissolved air flotation with aeration
- Patent number 5,151,177
- Issue date Sep 29, 1992
- Darling-Delaware Company, Inc.
- Mel Roshanravan
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE