Steve J. Wiersma

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Sunnyvale, CA, US

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Patents Grantslast 30 patents

Information Patent Grant
Apparatus and method for thermal membrane distillation
- Patent number 4,419,187
- Issue date Dec 6, 1983
- International Power Technology, Inc.
- Dah Y. Cheng
- B32 - LAYERED PRODUCTS
Information Patent Grant
Composite membrane for a membrane distillation system
- Patent number 4,419,242
- Issue date Dec 6, 1983
- International Power Technology, Inc.
- Dah Y. Cheng
- B32 - LAYERED PRODUCTS
Information Patent Grant
Composite membrane for a membrane distillation system
- Patent number 4,316,772
- Issue date Feb 23, 1982
- Dah Y. Cheng
- B32 - LAYERED PRODUCTS