Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660625 | Use of basic aluminium sulphates as low-alkali set accelerators for cement | Otto Helmboldt, Johannes Breker, Reinhold Sedelies, Detlev Roggenkamp | 1997-08-26 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5660625 | Use of basic aluminium sulphates as low-alkali set accelerators for cement | Otto Helmboldt, Johannes Breker, Reinhold Sedelies, Detlev Roggenkamp | 1997-08-26 |