Issued Patents All Time
Showing 1–25 of 48 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5964693 | Continuous preparation of silica sols which contain large particles | Uwe Brekau, Hans-Dieter Block, Peter C. Schmidt, Peter Schober, Werner Ludovici | 1999-10-12 |
| 5682593 | Extraction of acids and metal salts from aqueous solutions with diethyl dodecylphosphonate | Christoph Holzner, Hans-Dieter Block | 1997-10-28 |
| 5667759 | Method for manufacturing alkali chromates from chromium ore | Rainer Bellinghausen, Heinrich Helker, Paul Strehlow, Bernhard Spreckelmeyer, Norbert Lonhoff +5 more | 1997-09-16 |
| 5639909 | Production of 2-phosphonobutane-1,2,4-tricarboxylic acid and the alkali metal salts thereof | Christoph Holzner, Wolfgang Ohlendorf, Hans-Dieter Block, Horst Bertram, Roland Kleinstuck | 1997-06-17 |
| 5618960 | Fine particle silicon containing surface-bound halogen, a process for its production and its use | Manfred Schulze, Hans Rinkes, Elke Licht, Alfred B orsting, Bruno Degen +1 more | 1997-04-08 |
| 5608099 | Process for the recovery of tributyl phosphate from spent hydraulic oils | Hans-G unter Fr ohlen, Hans-Dieter Block, Wolfgang Ohlendorf, Peter C. Schmidt | 1997-03-04 |
| 5587513 | Polyether-substituted imide compounds and their use | Klaus Pohmer, Rainer Weber, Cornelia D orzbach-Lange, Reinhard Haida | 1996-12-24 |
| 5584921 | Method for the preparation and use of new mixtures for coatings | Gebhard Wagner, Karl-Heinz Kasler, Jan Mazanek | 1996-12-17 |
| 5565615 | Method of preparing dimethylamine-borane | Christoph Holzner, Alfred Wagner, Dietrich Pantke, Hans-Dieter Block, Wolfgang Ohlendorf | 1996-10-15 |
| 5554689 | Combinations of polyorganosiloxanes and fluororubbers containing double bonds by Si-H addition | Gerhard Langstein, Ralf Kr uger, Heinrich Alberts, John Huggins | 1996-09-10 |
| 5548009 | Stabilization of acetate systems | Wilhelm Weber, Karl-Heinz Sockel | 1996-08-20 |
| 5505918 | Method for manufacturing alkali chromates from chromium ore | Uwe Arndt, Michael Batz, Rainer Bellinghausen, Hans-Dieter Block, Heinrich Helker +5 more | 1996-04-09 |
| 5502251 | Imides and their salts, as well as their use | Klaus Pohmer, Rainer Weber, Cornelia Do/ rzbach-Lange, Karlheinz Stachulla, Manfred Wienand | 1996-03-26 |
| 5484511 | Process for the removal of impurities from hydrazine hydrate | Wolfgang Ohlendorf, Michael Batz, Peter C. Schmidt, Gerhard Jonas | 1996-01-16 |
| 5458812 | Process for the production and concentration of silica sols | Uwe Brekau, Andreas Nickel, Hans-Dieter Block, Peter C. Schmidt, Peter Schober +1 more | 1995-10-17 |
| 5424474 | Fluorinated carboxylic acid esters of phosphono- and phosphinocarboxylic acids containing hydroxyl and/or mercapto groups, a method for their preparation, and their use | Klaus Pohmer, Rainer Weber, Hans-Dieter Block | 1995-06-13 |
| 5414102 | Fluorinated carboxylic acid esters of phosphono- and phosphinocarboxylic acids containing acrylate and/or methacrylate groups | Klaus Pohmer, Rainer Weber, Hans-Dieter Block | 1995-05-09 |
| 5414120 | Polyether-substituted imide compounds and their use | Klaus Pohmer, Rainer Weber, Cornelia Dorzbach-Lange, Reinhard Haida | 1995-05-09 |
| 5411726 | Process for purifying hydrogen fluoride | Andreas Bulan, Rainer Weber, Hans-Dieter Block | 1995-05-02 |
| 5399756 | Process for the production of liquid amine adducts of fluorine-containing amides | Wolfgang Schneider, Karlheinz Stachulla, Klaus Pohmer, Rainer Weber, Ottfried Schlak | 1995-03-21 |
| 5364507 | Process for the production of perfluoroalkylsulphonyl fluorides and electrodes for performance of the process | Andreas Bulan, Rainer Weber, Zbigniew Muziol, Hartmut Schlecker | 1994-11-15 |
| 5342986 | Fluorinated carboxylic acid esters of phosphonocarboxylic acids and phosphinocarboxylic acids and use thereof | Klaus Pohmer, Rainer Weber, Hans-Dieter Block, Cornelia Dorzhach-Lange | 1994-08-30 |
| 4548999 | Elastomeric organopolysiloxanes containing polycarbodiimide-polysiloxane copolymers | Helmut Steinberger, Werner Michel, Wilfried Kniege | 1985-10-22 |
| 4497962 | Preparation of polysiloxane/polyoxyalkylene copolymer useful as stabilizers in making polyurethane foams | Armand de Montigny, Hans-Walter Illger, Alberto C. Gonzalez-Doerner | 1985-02-05 |
| 4444946 | Stable, organic multi-component dispersions | Heinrich Alberts, Hans Friemann, Hans Sattlegger | 1984-04-24 |