Issued Patents All Time
Showing 1–14 of 14 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7361753 | Method for the production of easily wetted, water-soluble, powdered at least alkylated non-ionic cellulose ethers | Alf Hammes | 2008-04-22 |
| 6924369 | Water-soluble, sulfoalkyl-containing, hydrophobically modified cellulose ethers, process for preparing them, and their use as protective colloids in polymerizations | Horst Wurm | 2005-08-02 |
| 6515049 | Water-soluble, sulfoalkyl-containing, hydrophobically modified cellulose ethers, process for preparing them, and their use as protective colloids in polymerizations | Horst Wurm | 2003-02-04 |
| 6313287 | Water-soluble, sulfoalkyl-containing, hydrophobically modified cellulose ethers, processes for preparing them, and their use in emulsion paints | Juergen Kirchner | 2001-11-06 |
| 6111011 | Cellulose ethers containing butenyl groups and use thereof as protective colloids in polymerizations | Rudolf Ehrler, Horst Wurm | 2000-08-29 |
| 6021966 | Process and apparatus for simultaneously grinding and drying a material to be ground containing moist cellulose ether | Manfred Sponheimer, Guenther Welt, Manfred Ziegelmayer | 2000-02-08 |
| 5994531 | Cellulose ethers containing 2-propenyl groups and use thereof as protective colloids in polymerizations | Rudolf Ehrler, Horst Wurm | 1999-11-30 |
| 5928709 | Process for the preparation of low molecular weight cellulose ethers | Diethart Reichel | 1999-07-27 |
| 5921479 | Process and apparatus for simultaneously grinding and drying material to be ground containing moist cellulose ether | Manfred Sponheimer, Guenther Welt, Manfred Ziegelmayer | 1999-07-13 |
| 5840882 | Process for preparing cellulose ethers with recovery of alkali | Rudolf Ehrler | 1998-11-24 |
| 5739304 | Process for the preparation of water-soluble aminoalkyl derivatives of polysaccharides | Rudolf Ehrler, Andreas Schrell | 1998-04-14 |
| 5719274 | Process for the preparation of low molecular weight cellulose ethers | Diethart Reichel | 1998-02-17 |
| 5708162 | Process for the preparation of low molecular weight polysaccharide ethers | Josef Hilbig | 1998-01-13 |
| 4966828 | Carbonylmethylene-heterocyclic compounds containing trihalogenomethyl groups, process for their preparation, and light-sensitive mixture containing the compounds | Hans Ruckert, Ulrich Geissler, Hartmut Steppan | 1990-10-30 |