Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9090006 | Damping element with connecting substance | — | 2015-07-28 |
| 6342162 | Removal of heavy metal ions from aqueous media | — | 2002-01-29 |
| 5248812 | Process for the isolation of 2-naphthylamine-1,5-disulphonic acid | Horst Behre, Heinz U. Blank, Fritz Pohl, Paul Uhrhan | 1993-09-28 |
| 5070198 | AS-triazine compounds | Piero Fossati, Herbert Hugl, Klaus Wehling | 1991-12-03 |
| 5017498 | Indicator compounds, method of their preparation and use of those compounds in an iron assay system | Piero Fossati, Herbert Hugl, Klaus Wehling | 1991-05-21 |
| 4994570 | Indicators for the detection of thiol groups | Klaus Wehling | 1991-02-19 |
| 4988616 | Method for detecting hydrogen peroxide employing triaryl- and trihetarylmethane derivatives as redox indicators | Gerhard Wolfrum, Klaus Wehling, Herbert Hugl | 1991-01-29 |
| 4962019 | Indicators for the detection of thiol groups | Klaus Wehling | 1990-10-09 |
| 4931579 | Indicators for the detection of thiol groups | Klaus Wehling | 1990-06-05 |
| 4921872 | Acaricidal agents based on azomethines of 2,3-diaminomaleic acid nitrile | Benedikt Becker | 1990-05-01 |
| 4897419 | Pest-combating agents based on derivatives of 2,3-diaminomaleonitrile | Benedikt Becker | 1990-01-30 |
| 4786729 | Benzimidazolo-quinazolines | Gert Jabs | 1988-11-22 |
| 4770809 | Azo dyestuffs and liquid crystal material containing azo dyestuffs | Uwe Claussen | 1988-09-13 |
| 4711954 | 3-thienylazo dyes with a gamma-acid coupler | Gerhard Wolfrum | 1987-12-08 |
| 4579805 | Color photographic recording material containing a thiophene azo dye releaser for cyan dyes | Peter Bergthaller, Hauke Furstenwerth, Rudolf Stolzenburg, Paul Marx | 1986-04-01 |
| 4579817 | Color photographic recording material containing dye-releasers releasing 6-arylazo-2-amino-3-pyridinol dyes which are chelatable with metal ions | Peter Bergthaller, Gerhard Wolfrum | 1986-04-01 |
| 4524123 | Chelatable 4-thienyl imidazole azo dyes, their use in color photographic recording material | Gunther Schenk, Peter Bergthaller, Gerhard Wolfrum | 1985-06-18 |
| 4418143 | Color photographic recording material | Peter Bergthaller, Gunther Schenk, Gerhard Wolfrum, Hans-Volker Runzheimer | 1983-11-29 |