Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7524582 | Zinc powder or zinc alloy powder for alkaline batteries | Petra Merkel, Jochen Spiestersbach, Rudi Kube, Norbert Schulz | 2009-04-28 |
| 7323031 | Zinc powder or zinc alloy powder with inhomogeneous bulk density for alkaline batteries | Petra Merkel, Jochen Spriestersbach, Rudi Kube, Norbert Schulz | 2008-01-29 |