Issued Patents All Time
Showing 1–15 of 15 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9227915 | Process for the preparation of a crystalline L-MGDA trialkali metal salt | Alfred Oftring, Maxim Weber, Arnulf Lauterbach | 2016-01-05 |
| 8802894 | Process for the preparation of aqueous solutions of methylglycine-N,N-diacetic acid trialkali metal salts | Alfred Oftring, Arnulf Lauterbach | 2014-08-12 |
| 8455682 | Method for the production of aminodicarboxylic acid-N,N-diacetic acids | Alfred Oftring, Armin Stamm, Friedrich Wirsing | 2013-06-04 |
| 7671234 | Method for producing methylglycine-N,N-diethanoic acid-trialkali metal salts with a low by-product content | Alfred Oftring, Friedrich Wirsing, Armin Stamm, Kai-Uwe Baldenius | 2010-03-02 |
| 7652165 | Neutralization of isophorone nitrile synthesis products | Alfred Oftring | 2010-01-26 |
| 6861548 | Continuous process for the cyanoalkylation of compounds having one or more NH functions | Thomas Greindl, Friedrich Wirsing, Georg Krug | 2005-03-01 |
| 6822110 | CaO-catalyzed preparation of isophoronenitrile | Dagmar Pascale Kunsmann-Keitel, Ingo Münster, Klaus Mundinger, Gunter Scherhag, Wolfgang Siegel | 2004-11-23 |
| 6420593 | Method for producing long-chain glycine-N,N-diacetic acid derivatives | Rainer Rahm, Thomas Greindl, Alfred Oftring, Guenter Oetter, Juergen Detering | 2002-07-16 |
| 6307086 | Method for producing long-chain glycine-N,N-diacetic acid derivatives | Rainer Rahm, Thomas Greindl, Alfred Oftring, Guenter Oetter, Juergen Detering | 2001-10-23 |
| 5849950 | Preparation of glycine-N,N-diacetic acid derivatives | Thomas Greindl, Alfred Oftring, Jochen Wild, Birgit Potthoff-Karl, Georg Schuh | 1998-12-15 |
| 5817864 | Process for the preparation of glycine-N, N-diacetic acid derivatives | Thomas Greindl, Alfred Oftring, Jochen Wild, Birgit Potthoff-Karl, Georg Schuh | 1998-10-06 |
| 4952332 | Detergents that contain acyl derivatives of dihydroxydioxane as bleach activators | Rolf Fikentscher, Alfred Oftring, Werner Bochnitschek, Johannes Perner, Ulrich Kaluza +1 more | 1990-08-28 |
| 4911888 | Use of salts of sulfonamidocarboxylic acids as corrosion inhibitors in aqueous systems | Rolf Fikentscher, Chung-Ji Ischang, Christos Vamvakaris, Reinhold Kohlhaupt | 1990-03-27 |
| 4855423 | Preparation of sulfatobetaines | Chung-Ji Tschang, Christos Vamvakaris, Klaus Glaser | 1989-08-08 |
| 4837330 | Preparation of sulfatobetaines | Chung-Ji Tschang, Christos Vamvakaris, Klaus Glaser | 1989-06-06 |