David J. Kierzkowski

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Milwaukee, WI, US

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Patents Grantslast 30 patents

Information Patent Grant
Algicidal or algistatic compositions containing quaternary ammonium...
- Patent number 5,529,700
- Issue date Jun 25, 1996
- Laporte Water Technologies & Biochem, Inc.
- David J. Kierzkowski
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
Information Patent Grant
Buffer and method for buffering hot tubs and spas
- Patent number 5,352,409
- Issue date Oct 4, 1994
- Great Lakes Biochemical Company, Inc.
- David J. Kierzkowski
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE