Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6302954 | Solidifying and hardening accelerator for hydraulic binders | Rudolf Lunkenheimer, Johannes Breker, Horst-Dieter Altmann, Reinhold Sedelies | 2001-10-16 |
| 6251351 | Wet-process technique for refining phosphoric acid | Alexander Maurer | 2001-06-26 |
| 5660625 | Use of basic aluminium sulphates as low-alkali set accelerators for cement | Otto Helmboldt, Johannes Breker, Reinhold Sedelies, Detlev Roggenkamp | 1997-08-26 |
| 5187308 | Process for the production of low viscosity copolymers from maleic acid monoalkyl esters and vinyl alkyl ethers | Zvi Pelah, Werner Kopp, Ernst Urmann | 1993-02-16 |
| 5047490 | High molecular weight copolymers of maleic anhydride and methyl vinyl ether | Zvi Pehlah, Werner Kopp, Ernst Urmann | 1991-09-10 |