Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7425589 | Method for modifying cellulose ethers | Roland Friedel, Alf Hammes | 2008-09-16 |
| 5432215 | Building material products containing organic polymers as thickeners | Jozef Bohme-Kovac | 1995-07-11 |
| 5387626 | Additive combination for improving the processing properties of water-containing mixtures of building materials | Jozef Bohme-Kovac, Heinz-Josef Mann | 1995-02-07 |
| 4283229 | Process for the preparation and use of stable cellulose ether suspensions | Volker Knittel | 1981-08-11 |
| 4265674 | Additive for concrete or mortar and the use thereof | Gerhard Debus, Volker Knittel | 1981-05-05 |