Andrew K. Hsiung

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Corvallis, OR, US

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Patents Grantslast 30 patents

Information Patent Grant
Cross-flow microfiltration lime softener
- Patent number 4,670,150
- Issue date Jun 2, 1987
- Neptune Microfloc, Incorporated
- Andrew K. Hsiung
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Water filtration apparatus having upflow buoyant media filter and d...
- Patent number 4,608,181
- Issue date Aug 26, 1986
- Neptune Microfloc, Inc.
- Andrew K. Hsiung
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Water filtration process and apparatus having upflow filter with bu...
- Patent number 4,547,286
- Issue date Oct 15, 1985
- Neptune Microfloc, Inc.
- Andrew K. Hsiung
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Split flow water treatment plant
- Patent number 4,199,451
- Issue date Apr 22, 1980
- Neptune Microfloc, Inc.
- Andrew K. Hsiung
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL