Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5948979 | Radar-based method of measuring the level of a material in a container | Carsten Fitsch, Wolfgang Lubcke, Peter Gerst | 1999-09-07 |
| 5288908 | Process for the preparation of fluorine containing monomers | Gunter Siegemund, Freimund Rohrscheid | 1994-02-22 |
| 5110983 | Hexafluoroisopropyl-containing monomers, process for their preparation and their use | Gunter Siegemund, Freimund Rohrscheid | 1992-05-05 |
| 5081315 | Fluoro-containing compounds based on 4,4'-bis[2-(4-hydroxyphenyl) hexafluoroisopropyl]diphenyl ether, processes for their preparation and their use | Gunter Siegemund | 1992-01-14 |
| 5004797 | Partly fluorinated carboxylic acids and derivatives thereof, processes for their preparation and their use | Freimund Rohrscheid, Gunter Siegemund | 1991-04-02 |
| 4978790 | 4,4'-bis[2-(4-hydroxy-amino-phenyl)hexafluoroisopropyl]-diphenylethers and their use | Gunter Siegemund | 1990-12-18 |
| 4972386 | Filling level meter | — | 1990-11-20 |
| 4922019 | Derivatives of 2,2-bis-(3-aminophenyl)hexafluoropropane and process for the preparation of 2,2-bis-(3,4-diaminophenyl)hexafluoropropane | Gunter Siegemund | 1990-05-01 |
| 4700569 | Method and arrangement for signal transmission in ultrasonic echo sounding systems | Bernhard Michalski, Wolfram Berger | 1987-10-20 |
| 4675854 | Sonic or ultrasonic distance measuring device | — | 1987-06-23 |