Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6511517 | Method for producing a secondary lithium cell comprising a heat-sensitive protective mechanism | Matthias Ullrich, Dieter Bechtold, Thomas Brohm | 2003-01-28 |
| 4642600 | Device for indicating the fully charged state of a battery | Klaus Gummelt, Jurgen Schulz, Klaus Salamon | 1987-02-10 |
| 4269912 | Lead storage battery with stored expander | Angela Kalbitz, Karl H. Kleber | 1981-05-26 |