Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6099987 | Cylindrical electrochemical cell with cup seal for separator | Josef Daniel-Ivad, Elfriede Daniel-Ivad | 2000-08-08 |
| 5626988 | Sealed rechargeable cells containing mercury-free zinc anodes, and a method of manufacture | Josef Daniel-Ivad, Klaus Tomantschger | 1997-05-06 |
| 5424145 | High capacity rechargeable cell having manganese dioxide electrode | Klaus Tomantschger, Josef Daniel-Ivad | 1995-06-13 |