Permeable cements
US7717176B2 · kind B2 · utility
3Cited by
20References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2006 |
| Grant date | May 18, 2010 |
| Priority date | — |
| Expiry date | May 29, 2028 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S507/906
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A permeable cement composition including an aqueous slurry of a hydraulic cement which is based upon a water-immiscible dispersed fluid phase and a hollow particulate material. The hollow particulate material breaks down in the presence of the cement so as to leave voids which together with the dispersed phase create a permeable structure in the cement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.