Alvaro R. Tejeda

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New York, NY, US

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Patents Grantslast 30 patents

Information Patent Grant
Concentric annular filters for purifying water
- Patent number 5,510,027
- Issue date Apr 23, 1996
- Alvaro R. Tejeda
- A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
Information Patent Grant
Reversible electrolytic system for softening and dealkalizing water
- Patent number 4,671,863
- Issue date Jun 9, 1987
- Alvaro R. Tejeda
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Membrane process for converting sodium sulfate into sulfuric acid a...
- Patent number 4,486,283
- Issue date Dec 4, 1984
- Alvaro R. Tejeda
- C01 - INORGANIC CHEMISTRY