Petra Merkel

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Bad Harzburg, DE

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Patents Grantslast 30 patents

Information Patent Grant
Zinc powder or zinc alloy powder for alkaline batteries
- Patent number 7,524,582
- Issue date Apr 28, 2009
- Grillo-Werke AG
- Armin Melzer
- B22 - CASTING POWDER METALLURGY
Information Patent Grant
Zinc powder or zinc alloy powder with inhomogeneous bulk density fo...
- Patent number 7,323,031
- Issue date Jan 29, 2008
- Grillo-Werke AG
- Armin Melzer
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...

Patents Applicationslast 30 patents

Information Patent Application
ZINC POWDER OR ZINC ALLOY POWDER FOR ALKALINE BATTERIES
- Publication number 20060210878
- Publication date Sep 21, 2006
- Grillo-Werke AG
- Armin Melzer
- B22 - CASTING POWDER METALLURGY
Information Patent Application
Zinc powder or zinc alloy powder with inhomogeneous bulk density fo...
- Publication number 20040187640
- Publication date Sep 30, 2004
- Armin Melzer
- C22 - METALLURGY FERROUS OR NON-FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FER...
Information Patent Application
Zinc powder or zinc alloy powder for alkaline batteries
- Publication number 20030203281
- Publication date Oct 30, 2003
- Armin Melzer
- B22 - CASTING POWDER METALLURGY