Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11781278 | Unbalance arrangement for a compactor roller of a soil compactor | Peter Janner | 2023-10-10 |
| 11162231 | Soil-processing roller | — | 2021-11-02 |
| 4988616 | Method for detecting hydrogen peroxide employing triaryl- and trihetarylmethane derivatives as redox indicators | Holger Heidenreich, Klaus Wehling, Herbert Hugl | 1991-01-29 |
| 4814271 | Method for detecting esterolytic and proteolytic enzymes | Herbert Hugl, Hans-Volker Runzheimer, Eugen Schnabel | 1989-03-21 |
| 4757137 | Orthotrifluoromethyl containing phenylazonaphthol dyestuffs | Erich Klauke, Hans Otten | 1988-07-12 |
| 4749813 | 4-alkyl-2-trifluoromethylanilines | Albrecht Marhold | 1988-06-07 |
| 4711954 | 3-thienylazo dyes with a gamma-acid coupler | Holger Heidenreich | 1987-12-08 |
| 4637979 | Composition and test device for determining the presence of leukocytes containing a zwitterion coupling agent | A. Christopher Skjold, Herbert Hugl | 1987-01-20 |
| 4600681 | Color photographic material with azo dicyanoimidazole dyes | Peter Bergthaller, Jurgen Strauss, Hans-Volker Runzheimer | 1986-07-15 |
| 4579817 | Color photographic recording material containing dye-releasers releasing 6-arylazo-2-amino-3-pyridinol dyes which are chelatable with metal ions | Peter Bergthaller, Holger Heidenreich | 1986-04-01 |
| 4524123 | Chelatable 4-thienyl imidazole azo dyes, their use in color photographic recording material | Gunther Schenk, Peter Bergthaller, Holger Heidenreich | 1985-06-18 |
| 4521506 | Monoazo pyridinol dyes chelated or capable of being chelated with metal ions and their use for image production | Rudolf Stolzenburg, Peter Bergthaller, Jurgen Strauss | 1985-06-04 |
| 4461827 | Color photographic recording material containing a non-diffusible dye releaser from which a complexible azo dye is released during development | Peter Bergthaller, Gunther Schenk | 1984-07-24 |
| 4439372 | Process for the preparation of styryl dyestuffs | Herbert Hugl, Klaus-Friedrich Lehment | 1984-03-27 |
| 4418143 | Color photographic recording material | Peter Bergthaller, Gunther Schenk, Hans-Volker Runzheimer, Holger Heidenreich | 1983-11-29 |
| 4396710 | Photographic recording material with metal complexable, heterocyclic azo dye | Peter Bergthaller, Gunther Schenk, Hans-Volker Runzheimer | 1983-08-02 |
| 4393132 | Photographic recording material with arylazocyanoacetic ester dye releasers | Gunther Schenk, Peter Bergthaller, Rudolf Stolzenburg | 1983-07-12 |
| 4369324 | Process for the preparation of 2-amino-6-nitrobenzothiazole | Walter Horstmann, Richard Sommer, Hans-Hermann Trautwein | 1983-01-18 |
| 4339380 | Azo dyestuffs | Herbert Hugl, Winfried Mennicke, Karl H. Schundehutte, Jochen Westphal | 1982-07-13 |
| 4324723 | Monoazo dyestuffs | Dieter vor der Bruck | 1982-04-13 |
| 4324722 | Water-soluble substituted aminocarbonyl monoazo dyestuffs | Dieter vor der Bruck | 1982-04-13 |
| 4249275 | Process for dyeing and printing cellulose fibres | Herbert Hugl, Henning Reel, Werner Kunnel, Robert Kuth, Wilhelm Gohrbandt | 1981-02-10 |
| 4248774 | P-Sulphophenoxy-phenylazo indoles | Herbert Hugl | 1981-02-03 |
| 4247460 | Disazo dyestuff sulphuric acid ester | Herbert Hugl | 1981-01-27 |
| 4243584 | Monoazo dyestuffs containing diazo component substituted by disulfimide and trifluoromethyl groups | Richard Sommer, Gerhard Buttner | 1981-01-06 |