John D. Zupanovich

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Pittsburgh, PA, US

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Patents Grantslast 30 patents

Information Patent Grant
Methods and apparatus for monitoring and controlling PH phosphate a...
- Patent number 5,747,342
- Issue date May 5, 1998
- Calgon Corporation
- John D. Zupanovich
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Trihydroxybenzene boiler corrosion inhibitor compositions and method
- Patent number 4,895,703
- Issue date Jan 23, 1990
- Calgon Corporation
- John D. Zupanovich
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Stabilized sodium erythorbate boiler corrosion inhibitor compositio...
- Patent number 4,681,737
- Issue date Jul 21, 1987
- Calgon Corporation
- Jerry L. Walker
- C23 - COATING METALLIC MATERIAL COATING MATERIAL WITH METALLIC MATERIAL CHEMI...
Information Patent Grant
Aqueous stable magnesium hydroxide suspensions which are dispersibl...
- Patent number 4,561,897
- Issue date Dec 31, 1985
- Calgon Corporation
- John D. Zupanovich
- C01 - INORGANIC CHEMISTRY
Information Patent Grant
Anionic polymers for reduction of viscosity of a magnesium hydroxid...
- Patent number 4,375,526
- Issue date Mar 1, 1983
- Calgon Corporation
- John D. Zupanovich
- C01 - INORGANIC CHEMISTRY