Issued Patents All Time
Showing 1–25 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7323155 | Method for producing silanes | Stephan Klein, Hans-Joachim Leimkühler, Werner Dick, Dirk Müller, Johannes-Peter Schafer | 2008-01-29 |
| 7157063 | Process for the utilization of vanadium from chromium ore as vanadium (V) oxide | Rainer Weber, Michael Batz, Jost Halstenberg, Michael Lumm, Roland-Luiz Roth +1 more | 2007-01-02 |
| 6951637 | Method and device for producing globular grains of high-puroty silicon having a diameter of between 50 μm and 300 μm and use of the same | Udo Krauter, Peter Schreckenberg | 2005-10-04 |
| 6942844 | Method and facility for producing silane | Dirk Müller, Georg Ronge, Johannes-Peter Schafer, Hans-Joachim Leimkühler, Ulrike Strauss | 2005-09-13 |
| 6905576 | Method and system for producing silane | Hans-Joachim Leimkühler, Dirk Müller, Johannes-Peter Schafer, Georg Ronge | 2005-06-14 |
| 6887448 | Method for production of high purity silicon | Leslaw Mleczko, Hans-Joachim Leimkühler, Rainer Weber, Knud Werner, Dietmar Schwanke +2 more | 2005-05-03 |
| 6852301 | Method for producing silane | Leslaw Mleczko, Andreas Bulan, Rainer Weber, Sigurd Buchholz, Torsten Sill | 2005-02-08 |
| 6843972 | Method for purifying trichlorosilane | Stephan Klein, Hans-Joachim Leimkühler, Werner Dick, Johannes-Peter Schafer | 2005-01-18 |
| 5964693 | Continuous preparation of silica sols which contain large particles | Uwe Brekau, Hans-Heinrich Moretto, Peter C. Schmidt, Peter Schober, Werner Ludovici | 1999-10-12 |
| 5885485 | Process for producing low-salt silica sol dispersions in low-boiling alcohols | Uwe Brekau, Bernd Rosenow | 1999-03-23 |
| 5710307 | Process for the production of trialkyl phosphites | Wolfgang Ohlendorf | 1998-01-20 |
| 5682593 | Extraction of acids and metal salts from aqueous solutions with diethyl dodecylphosphonate | Christoph Holzner, Hans-Heinrich Moretto | 1997-10-28 |
| 5667759 | Method for manufacturing alkali chromates from chromium ore | Rainer Bellinghausen, Heinrich Helker, Paul Strehlow, Hans-Heinrich Moretto, Bernhard Spreckelmeyer +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, Horst Bertram, Roland Kleinstuck, Hans-Heinrich Moretto | 1997-06-17 |
| 5608099 | Process for the recovery of tributyl phosphate from spent hydraulic oils | Hans-G unter Fr ohlen, Wolfgang Ohlendorf, Hans-Heinrich Moretto, Peter C. Schmidt | 1997-03-04 |
| 5565615 | Method of preparing dimethylamine-borane | Christoph Holzner, Alfred Wagner, Dietrich Pantke, Hans-Heinrich Moretto, Wolfgang Ohlendorf | 1996-10-15 |
| 5505918 | Method for manufacturing alkali chromates from chromium ore | Uwe Arndt, Michael Batz, Rainer Bellinghausen, Heinrich Helker, Norbert Lonhoff +5 more | 1996-04-09 |
| 5458812 | Process for the production and concentration of silica sols | Uwe Brekau, Andreas Nickel, Hans-Heinrich Moretto, 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-Heinrich Moretto | 1995-06-13 |
| 5414102 | Fluorinated carboxylic acid esters of phosphono- and phosphinocarboxylic acids containing acrylate and/or methacrylate groups | Klaus Pohmer, Rainer Weber, Hans-Heinrich Moretto | 1995-05-09 |
| 5411726 | Process for purifying hydrogen fluoride | Andreas Bulan, Rainer Weber, Hans-Heinrich Moretto | 1995-05-02 |
| 5342986 | Fluorinated carboxylic acid esters of phosphonocarboxylic acids and phosphinocarboxylic acids and use thereof | Klaus Pohmer, Rainer Weber, Cornelia Dorzhach-Lange, Hans-Heinrich Moretto | 1994-08-30 |
| 5273735 | Process for the preparation of sodium dichromate | Rainer Weber, Bernd Rosenow, Norbert Lonhoff | 1993-12-28 |
| 5258067 | Liquid for conditioning tooth or bone substance | Wolfgang Podszun, Michael Muller, Jens Winkel | 1993-11-02 |
| 5250274 | Process for the production of sodium dichromate | Norbert Lonhoff, Bernhard Spreckelmeyer, Rainer Weber, Jost Halstenberg, Bernd Rosenow | 1993-10-05 |