Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6998149 | Process for producing a membrane electrode assembly for fuel cells | Joachim Köhler, Karl-Anton Starz, Sandra Wittpahl | 2006-02-14 |
| 6500217 | Process for applying electrode layers to a polymer electrolyte membrane strip for fuel cells | Karl-Anton Starz, Ralf Zuber, Wolfgang Gottenauer, Knut Fehl | 2002-12-31 |
| 5336474 | Process for leaching of precious metals | Karl-Heinz Koenig, Eckhart Krone, Juergen Loroesch, Norbert Steiner, Jochen Ullmann +1 more | 1994-08-09 |
| 5306431 | Process for automatically controllable reduction of the nitrite content of nitrite-containing aqueous solutions to values below 1 mg/1 | Joachim Fischer, Hubert Wolf, Klaus Stuetzel, Friedhelm Brandner | 1994-04-26 |
| 5207925 | Process for the detoxification of cyanide-containing aqueous solutions | Norbert Steiner, Stephen Gos, Frank Ladwig | 1993-05-04 |
| 5204008 | Process for the detoxification of aqueous solutions containing cyanohydrins and/or nitriles | Joachim Fischer, Hubert Wolf | 1993-04-20 |
| 5200161 | Process for the separation of hydrogen cyanide from gases and waste gases | Joachim Fischer, Hubert Wolf | 1993-04-06 |
| 5174918 | Stable aqueous suspensions of detergent zeolites and four oxo-alcohol ethoxylates | Roland Bergmann | 1992-12-29 |
| 5076957 | Phosphate-free detergent builders | Wolfgang Leonhardt, Gerhard Morlock, Maurizio Ragnetti | 1991-12-31 |
| 4883607 | Water-insoluble silicate containing detergent builder granulate | — | 1989-11-28 |
| 4879057 | Aqueous bleaching agent suspensions containing peroxycarboxylic acid, method for their preparation and use | Manfred Dankowski, Thomas Lieser, Gunter Prescher, Wolfgang Leonhardt | 1989-11-07 |
| 4683073 | Builder for washing agents | — | 1987-07-28 |
| 4671887 | Aqueous stable suspensions of water insoluble silicates capable of binding calcium ions and their use for the production of washing and cleaning agents | Roland Bergmann, Gunter Stadtmuller, Sigrid Diener | 1987-06-09 |
| 4668420 | Detergent builder | Roland Bergmann | 1987-05-26 |
| 4589989 | Laundry softener concentrate | Karl-Hans Muller | 1986-05-20 |
| 4508633 | Scouring powder | Hans-Jurgen Strempel, Roland Bergmann | 1985-04-02 |
| 4486331 | Aqueous stable suspension of water insoluble silicate capable of binding calcium ions and its use for the production of washing and cleansing agents | Roland Bergmann, Gunter Stadtmuller | 1984-12-04 |
| 4454056 | Process for the production of zeolites modified on the surface with organosilanes | Udo Kittelmann, Roland Bergmann, Gunter Stadtmuller | 1984-06-12 |
| 4435216 | Process for the accelerated solidification of hydraulic cement mixture | Roland Bergmann | 1984-03-06 |