Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6148665 | Arrangement for establishing and/or monitoring a predetermined filling level in a container | Sergej Lopatin | 2000-11-21 |
| 6142015 | Method and assembly for overfill detection in liquid level sensing in a vessel by the pulse transit time technique | Sergej Lopatin, Roland Muller | 2000-11-07 |
| 6138507 | Apparatus for establishing and/or monitoring a predetermined filling level in a container through controlled transducer phase and impedance | Sergej Lopatin, Volker Dreyer | 2000-10-31 |
| 5966983 | Assembly for sensing and/or monitoring a predetermined level in a vessel | Helmut Pfeiffer, Sergej Lopatin | 1999-10-19 |
| 5969621 | Apparatus for establishing and/or monitoring a predetermined filling level in a container | Sergej Lopatin | 1999-10-19 |
| 5844491 | Apparatus for establishing and/or monitoring a predetermined filling level in a container | Sergej Lopatin | 1998-12-01 |
| 5836192 | Device for monitoring a predetermined level of a liquid in a container | Sergej Lopatin, Roland Muller | 1998-11-17 |
| 5815079 | Device for establishing and/or monitoring a predetermined filling level in a container | Sergej Lopatin | 1998-09-29 |
| 5755136 | Device for monitoring a predetermined level of a liquid in a container | Sergej Lopatin, Roland Muller | 1998-05-26 |
| 5757104 | Method of operating an ultransonic piezoelectric transducer and circuit arrangement for performing the method | Sergey Lopatin | 1998-05-26 |
| 5730025 | Device for monitoring a predetermined level of a liquid in a container | Sergej Lopatin, Roland Muller | 1998-03-24 |