Issued Patents 2003
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6619268 | Method and apparatus for regulating voltages and voltage gradients for driving piezoelectric elements | Matthias Mrosik, Volker Pitzal, Udo Schulz | 2003-09-16 |
| 6573637 | Apparatus and method for detecting a load decrease when driving piezoelectric elements | Udo Schulz | 2003-06-03 |
| 6564771 | Fuel injection system for an internal combustion engine | Josef Newald, Udo Schulz | 2003-05-20 |
| 6539925 | Method and apparatus for determining charge quantity during charging and discharging of piezoelectric elements | Matthias Beckert, Udo Schulz | 2003-04-01 |
| 6522049 | Apparatus and method for detecting a short circuit to the battery voltage when driving piezoelectric elements | — | 2003-02-18 |
| 6509672 | Method and apparatus for charging a piezoelectric element | Patrick Mattes, Alexander Hock | 2003-01-21 |