Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8180309 | Lock-in amplifier and method for filtering a measurement signal using such an amplifier | Peter Krause, Michael Ludwig | 2012-05-15 |
| 8044353 | Non-dispersive infrared gas analyzer | Ralf Bitter, Camiel Heffels, Thomas Hörner, Martin Kionke, Michael Ludwig | 2011-10-25 |
| 6166383 | Non-dispersive infrared gas analyzer | Peter Krause, Michael Ludwig, Karlheinz Schmidt | 2000-12-26 |
| 5563330 | Method and device for measuring the concentration of a detector gas in a measuring gas containing an interfering gas | — | 1996-10-08 |